252
T H E ROTIFERA OF
SUFFOLK.
THE ROTIFERA OF PRELIMINARY
SUFFOLK.
LIST.
T H E S E interesting and structurally wonderful Wheel Animalcules are widely distributed in even the smallest pools and ditches, as well as the larger areas of fresh and brackish water ; but hitherto greatly neglected in EAnglia, where Norfolk boasts little over fifty kinds, though both there and in Suffolk a wealth of species certainly awaits discovery. Those already noted are here presented as a mere incentive to future work upon this group of Zoology, now considered of primary rank, of equal dignitv to the Vertebrata, and placed between the Annelid Worms and Crustacea. Mr. H. E. Hurrell believes that " nearly all the kinds that are mentioned in my Yarmouth list (comprising only 51 species, of which 11 are from Suffolk : Trans. Norf. Nat. Soc. vii, p. 383) besides many more, are undoubtedly to be found in Suffolk, where scarcely more than the fringe of the subject is yet touched. I would suggest that some of your younger Members take up this group of Animals, which can be pursued in any district where there is a pond, ditch, lake, river or even fountain in a garden. Collectors could send their captures to me at 60 Albany Road in Yarmouth for names, or to the Quekett Society at British Microscopal Union House, Tavistock Square, W.C. 1, London. There are about a thousand different species in Britain, and no doubt most of them will be discovered in Suffolk, which County is already noted for having added to our indigenous fauna the celebrated Rotifer called Atrochus tentaculatus, found by the late Mr. Henry Goodwin of Stowmarket in a pond at Yaxley and first discovered, new to Science, in Warsaw some twentyodd years ago. Suffolk has the credit of also adding to Science the new Vorticellid Zoothamnium geniculata, which was originallv turned up here by the late Mr. Ayrton of Beccles." We have extracted the appended list from all printed records ; and it was thrown by our late Porifera Recorder last October (1936) into the nomenclature of Harring's 1913 ' Synopsis of the Rotatoria,' pending the publication of D. L. Bryce's new work upon the subject.
PHYLUM
ROTIFERA.
F A M I L Y NOTOMMATW JE. Notommata aurita, Müll. All these six kinds were Pleurotrocha petromvzon, Ehr. I found in brackish dykes at Cephalodella catellina, Müll. Cobholm in Southtown during C. gibba, Ehr. : April 1934 by Hurrell and Encentrum gründe, Western. | named by the late David E. marinum, D u j . L. Bryce.
253
THE ROTIFERA OF SUFFOLK
FAMILY BRACHIONIDJE. Brachionns calyciflorus, Pall.—Beiton in 1900-1 and Cobholm in 1934 (Hurrell). B. capsuliflorus, Pall. 1 ,, , . , , , t\t •• ii i Cobholm brackish dykes, as above. 3 Fihnia passa, Mull. j Keratella cochlearis, Gosse.—In a loam-pit at Gunton in 1900 (Hurrell). K. quadrata, Müll.—The var. brevispina, Gosse, at Cobholm as above. Notholca foliacea, Ehr.—Cobholm in 1934. N. longispina, Kell.—Fritton Lake, 1900-1 (Hurrell). N. striata, Müll.—Southtown and Cobholm dykes 1900-34, along with its var. acuminata, Ehr. (Hurrell). FAMILY MYTIL1NIDJE. Mytilina ventralis, Ehr.—The var. brevispina, Ehr., at Cobholm in 1934. FAMILY EUCHLANID/E. Euchlanis macrura, Ehr.—Frequent in most ditches to south of Yarmouth in 1932. Monostyla closterocerca, Schm.—Cobholm in 1934. FAMILY LEPADELIJDJE. Lepadella patella, Müll. ) L. salpina, Ehr. r Found at Cobholm with the Colurella deflexa, Ehr. J
last.
FAMILY TRICHOTRIIDJE. Trichotria pocillum, Müll.—Southown ditches in March 1932 (Hurrell). FAMILY SYNCH/ET1DJE. Syncheeta tavina, Hood.—In ditches with the above kind. 5. tremula, Müll.—Cobholm in brackish dykes. FAMILY Polyarthra triqula,
POLYARTHRIDJE.
Ehr.—Cobholm
in
1934
(Hurrell).
FAMILY TESTUDINELLIDJE. Testudinella clypeata, Müll.—On Rtippia maritima in brackish dykes at Cobholm on 4 October 1900 (Hurrell). T. dliptica, Ehr.—Cobholm in 1900-1. T. patina, Herrn.—In a pond at Gunton (Hurrell). FAMILY FLOSCULARLDJE. Floscularia rintens, Linn.—Taken in brickfield at Ipswich (Hurrell). Limnias ceratophylli, Sehr.—In Waveney at Beccles 1900-1, and pond at Carlton Colville.
254
THE BRYOZOA OF SUFFOLK
Ptygura crystallina, E h r — I n various places to south of Yarmouth 1900-34. Sinantherina socialis, Linn.—In River Waveney at Beccles in 1900-1 (Hurrell). Lacinularia flosculosa, Müll.—Same river, at St. Olaves in Herringfleet. FAMILY COLLOTHECIDJE. Collotheca corntita, Dob.—Southtown ditches (Hurrell) ; great numbers on Myriophylhim spicatum at Cobholm in 1934. C. ornata, Ehr.—With the last kind, on the Myriophvllum in March 1932. " Stephanocerus fimbriatus, Goldf.—In Wavenev at Beccles in 1900, and Carlton Colville (Hurrell). FAMILY ATROCIIID/E. Atrochus tentaculatus, Wierz.—In a pond at Yaxley CH. Goodwin). Rotaria
rotatoria,
FAMILY PHILODINID/E. Pall.—Found at Cobholm in 1934 (Hurrell).
THE BRYOZOA OF SUFFOLK. PREI.IMINARY
LIST.
THE Bryozoa, formerly called Polyzoa, are now considered to constitute a phylum of paramount rank and of dignity equal to the Vertebrata, Standing popularly between the Shell-fish and Seaurchins, Echinodermata. But few of the Freshwater kinds of this group remain to be found here, though a very great number of the Marine ones, of which no less than a hundred and twentyfive species are known to occur at Plymouth, still await discovery in shrimpers' refuse, at the tide-line, and about the artificial bulwarks of our coast towns. T h e present short list of available local kinds was compiled (along with that of the Rotifera, supra) with the object of calling attention of our younger Members to the group and so, it is hoped, of giving a fillip to their study bv our Society. A s f a r a s Freshwater ones are concerned, Hartmeyer's 1909 Bryozoen in ' Die Susswasserfauna Deutschlands' has been followed ; and in most others, to which additions should easily be made, Hincks' 1880 ' British Marine Polyzoa' is adopted. T H E FRESHWATER
SPECIES.
Plumatella repens, Linn.—In Fritton Lake and a pond at Carlton Colville (Hurrell). Fredericella Suitana, Blbch.—Lound Run (Hurrell).