EUGLYPHA. 35 



Campaseus cornutus. 



Shell retort-shaped, neck short and curved, obtuse 

 fundus directed backward and upward, with a divergent 

 conical prolongation on each side ; composed of trans- 

 lucent, yellowish, chitinoid membrane incorporated with 

 scattered particles of sand ; mouth circular, bordered by 

 a delicate, colorless, annular expansion. Pseudopods fur- 

 cate and very delicate. Length, 112;* to 140;t ; breadth, 

 180;* ; mouth, 24// to 28^. 



Hob. Ooze of China Lake, Wyoming Territory, at 

 an altitude of 10,000 feet. 



GENUS Y. EUGLYPHA. 



SYN. : Euglypha, Duj. ; Difflugia ; Assulina ; Setigerella, Ehr. 



Shell hyaline, ovoid, of uniform diameter or com- 

 pressed, composed of regular rows of oval or hexagonal 

 chitinoid plates, arranged in longitudinal series, the 

 plates alternating with one another in the different rows. 

 Mouth terminal, circular or elliptical, the marginal plates 

 forming a series of minutely serrulate, angular points. 

 Shell usually provided with spines or hairs. Sarcode 

 colorless, with a large nucleus and contractile vesicles. 

 Pseudopods filamentous, exceedingly delicate, dichoto- 

 mously branching, not anastomosing, with no evident 

 circulation of granules, more or less horizontally diver- 

 gent. 



ia alveolata - SYN. : E. alveolata, Duj., Ehr., Pritch- 

 ard and others ; E. tuberculata, Duj., C. arid L., Pritchard, Perty ; Di- 

 fflugia areolata, aca.nthoph.ora> levigata, striolata, Ehr. ; E. lizvis, setigera, 



