CRYPTODIFFLUGIA COMPRESSA. 53 



expansion. It is not improbable that Hyalosphenia 

 inconspicua G. S. West may represent this species 

 (Vol. II, p. 84). 



3. Cryptodifflugia eboracensis Wailes. 

 ' (Plate LXII, figs. 1 and 2.) 



Cryptodifflugia eboracensis 

 WAILES & PENARD in Proc. R. Irish Acad. XXXI, LXV (1911), pp. 8, 



15, 24, pi. i, f. 3. ' 



BROWN in Naturalist. 1912 (Oct.), p, 181. 

 WAILES in Jrn. Linn. Soc.. Zool. XXXII (1912, Dec.), pp. 124, 133; 



in Naturalist, 1913, p. 146. 



Test small, yellow-brown in colour, transparent, 

 smooth, homogeneous, elongated, moderately com- 

 pressed ; aperture circular, oblique, without collar or 

 invagination ; plasma colourless, granular; nucleus 

 single, containing a central nucleole ; one or two con- 

 tractile vesicles usually present ; pseudopodia few, 

 short, pointed or digitate, 



Length 24-28/A; breadth 15-1 7ft; thickness 10-15ft; 

 aperture 4-7 /x in diameter ; nucleus 5 pi, in diameter. 



Habitat. Sphagnum. 



ENGLAND. Westmorland ; Goathland, Bransdale, 

 and Bolton, Yorkshire ; Derbyshire (Brown} : Bed- 

 fordshire ; Shropshire; Isle of Wight. 



WALES. N. Wales. 



SCOTLAND. Argyllshire (Brown). 



I KKLAND. Clare Island, Inishturk, Caher Island, and 

 mainland, Mayo ; Inishbofin, Galway. 



The form of the test is similar to that of Trinema 

 euchdys, but otherwise it has the characteristics of 

 the genus Cryptodifflugia, The species occurs in the 

 Eastern United States and Alaska. 



As with the other members of this genus the animal 

 is very shy, and only on one or two occasions have the 

 pseudopodia been observed, and even then they may 

 not have been fully extended. 



Although never abundant it is not uncommon in the 

 localities where it occurs. 



