EUGLTPHA OOMPBESSA. 41 



Forma glabra f. nov. (PL XXXVIII, f. 10.) 



Euglypha ciliata 



L EiDY (pars) Treshw. Rhiz. N. Amer. (1879), pp. 216, 217, pi. xxxvi, f . 23. 



Test as in the type but devoid of spines ; plasma 

 and pseudopodia as in tbe type. 



This form is not very rare and is found usually in 

 association with normal spined individuals. 



The hexagonal plates as drawn by Leidy represent 

 the chitinous cement joining the oval scales together 

 (fig. 127) ; in this species the cement is abnormally 

 thick and distinct as explained by Penard (v. ' Faune 

 Rhiz. Leman' (1902), p. 508, ff. 4, 5). 



14. Euglypha denticulata Brown. 

 (Plate XXXVI, figs. 7-13.) 



Euglypha denticulata 



Brown in Naturalist, 1912, p. 181 ; in Scott. Natur. 1912, pp. Ill, 



112, pi. T, ff. 5-11. 

 Wailes in Jrn. Linn. Soc, Zool. XXXII (1913), p. 213. 



Test small, glabrous, in broad view ovoid and not 

 infrequently unsymmetrical, compressed, formed of 

 elliptical, imbricated scales in alternating longitudinal 

 rows ; transverse section elliptical ; aperture small, 

 elliptical, about twice as long as broad, with an irre- 

 gularly-dentate border formed of eight or nine pointed 

 scales ; plasma colourless, granular ; nucleus contain- 

 ing a central nucleole, placed posteriorly ; pseudopodia 

 numerous, straight, divergent, extremely fine. 



Length 23-49 /x (usually 36-46 /a); breadth 15- 

 86 /x; aperture 6'5-10 [i,; thickness one half to two 

 thirds of the breadth; nucleus 8-1 2 /x in diameter; 

 nucleole about 3'5ja; scales of a medium-sized test 

 (length 42 /x) 6 /u. x 3 ju,. 



Habitat. — Ground moss. 



England. — Cumberland, Westmorland, and Lanca- 

 shire (-B?wf;;i) ; Yorkshire; Surrey (Broiun). 



Scotland. — St. Kilda, Outer Hebrides ; Aberfoyle, 

 Perthshire; and Isle of May (Brown). 



