Rhizopods from the Sikhim Himalaya. By E. Penard. 277 



Bulinella g. n. 



Shell pierced on the ventral face by an elongate narrow slit, 

 constituting a peristome with a smooth inferior lip and an over- 

 hanging superior lip pierced with pores. 



Bulinella indica, sp. n. 



Shell arcelloid, of elliptical contour, brownish, composed of 

 silicious particles soldered together by chitinous matter, thin and / 

 flat, smaller in the buccal region, Mouth opening by a long 

 narrow slit in tangential direction, with an inferior lip which by 

 its convex anterior border is prolonged a little forward, and a 

 superior lip of irregular or undulate outline, which projects over 

 the inferior lip. 



Eouuded pores, 2-3/i in diameter, disposed in unequal series 

 all over the upper lip. 



(?) Numerous nuclei of 3/i in diameter. 



Mean size 170-200/i (following the greatest diameter of the 

 shell, that is to say its width). 



Antero-posterior diameter, perpendicular to the buccal slit,. 



120-140yLt. 



Localities— Gokdhara, 3000 ft., Sukvar, 4000 ft. 



List of all the Species Observed. 



Btdinella indica g. et sp. n. 



Centropyxis acideata Stein. — Under various forms, abundant at 

 all elevations, from 4000-8000 ft. 



C. ecornis (Leidy, Freshwater Ehizopods of North America, 

 1879, plate xxx. figs. 30, 31).— In moss from Gokdhara, 3000 ft. 



C. laevigata Penard. — Gokdhara, 3000 ft. ; rare. 



Diflugia arcula Leidy. — Sinihul, 8000 ft., Baghghora, 6000 ft., 

 Gokdhara, 3000 ft. 



D. constricta Ehr. — Under several forms, one larsje and fine, 

 without spines, answering to Leidy's plate xviii. figs. 35-36. 

 Common in nearly all the samples, 2000-8000 ft. 



D. pyriformis Perty. — Answering in form to Leidy's plate x. 

 fig. 18 ; resembling, in fact, D. hacillifera Penard, but covered with 

 stones instead of diatoms ; not very rare, Sinihul, 8000 ft. ; also 

 small variety, Sinihul. 



Heleopcra petricola Leidy. — In many samples, Sinihul, 8000 ft., 

 rather large ; Baghghora, 6000 ft. 



H. rosea Penard. — Baghghora, 6000 ft., abundant, but under a 

 peculiar shape. 



