222 ME. J. CASH ON NEW AND LITTLE-KNOWN 



animal thrusts out, first, the frontal lobe, with its flagellum, 

 which is followed immediately by thin transparent pseudopodia, 

 two or more on either side. These anterior pseudopodia are 

 more mobile, as a rule, than the lateral ones, and are likewise more 

 pellucid, because less thickly covered with bacilliform spicula. 



Some Northen Etchells examples, examined last year, presented 

 a remarkable variation from the type. This variation may 

 or may not be permanent. Should such differences as were 

 noted prove, on further examination, to be persistent, they 

 may justify the constitution of this form into a new species 

 {M. cestriensis, MS.). The animals were smaller and more 

 slender, and their anterior pseudopodia were narrower and more 

 elongated, than those from Chelford. But the chief point of 

 difference lay in the possession of a posterior appendage, com- 

 parahle to that of Amoeba villosa, though of different structure. 

 It took the form of a circular expansion of ectoplasm, finely 

 granular in substance and more or less transparent, containing 

 usually two or more small non-pulsating vacuoles, and beset 

 with conical or acute, radiating, and persistent pseudopodia. A 

 few minute spicula could sometimes be detected about the 

 surface of the appendages, whilst they were absent from other 

 parts of the body, or few and scattered. The nuclear mass, 

 always occupying an anterior position, and often partially hidden 

 by the densely granular protoplasm, was more angular in outline 

 than in other examples ; and the flagellum was almost invariablj 

 active, seeming to perform the function of a tentacle. A wider 

 band of comparatively clear ectoplasm was also noted. 



Eamily Eetictilosa. 

 Genus GrTMNOPHETS, CienTcowsTcy. 



GrTMNOPHBTS COMETA, CienTcowslcy, Archiv fiir mikr. Anat. 

 xii. (1876) p. 31, t. 5. f. 25 ; Blochmann, Die mikros. Thierwelt 

 des Siisswass. (1895) p. 14, t. i. f. 9. 



Examples of this apparently very rare organism occurred iu 

 SpJiagnum from Lindow Common, Cheshire, in 1903. They 

 presented some variation from the published figures, but not of 

 such a character as to admit of doubts as to their identity. 

 The body was more spherical than oval — often with projections 

 from the surface-outline ; and whilst the longer pseudopodia 

 emanated from opposite poles, sometimes a few shorter lateral 



