EHIZOPODA FROM NORTH AND SOUTH AMERICA. 207 



internally, arising at each side o£ the test above the widest part, and communi- 

 cating at the base with the exterior by a small slit-like orifice ; test in lateral 

 view narrowly pyriform ; transverse section elliptical, prolonged at each end 

 into a shallow keel ; aperture elliptical ; nucleus large, placed posteriorly, 

 containing several nucleoles ; plasma normal. 



Length 203-240 fju ; breadth 126-145 /^ ; aperture 38-45 /* by 20-23 yu ; 

 thickness one half to two thirds o£ the breadth; length o£ horns 35-60//,. 



Habilat. Sphagnum. 



Distribution. — Lakehurst ; Absecom {Leidij), N.J. ; Good Grround, Long 

 Island (16). 



Leidy found only two empty tests o£ this species, and he realised that 

 although related to, they were distinct from Nebela equicalceiis ; from which 

 ■species it is distinguished by the absence of the horseshoe-shaped keel around 

 the fundus, by the horns not being solid, and the smaller size of the test with 

 a shorter neck. The small openings at the base of the horns are very narrow 

 «lits usually indistinguishable but readily detected if a test be removed from 

 water into oil of cloves, when the oil can be seen entering; throuo-h them : 

 although not uncommon in several gatherings and many living individuals 

 were seen^ none were active. No specimens of JSf. equicalceus were found. It 

 may perhaps be more than a coincidence that if the space occupied by the 

 horns were vacant the test would then be similar to that of N. ansata, and the 

 ■small discs often attached to the horns of that species (Leidy, PI. 25. fig. 1) 

 may represent the discarded material. 



COCHLIOPODIUM ECHINATUM, Korotneff. 



In Arch. Zool. exper. viii. (1879) p. 480, pi. 25. fig. 9. 

 C. vestitum pars, Leidy (6), p. 188, pi. 32. figs. 27, 28. 



A form occurs at Good Ground, Long Island, similar to Leidy's figs. 21 

 & 28, which Cash & Hopkinson (Ray Soc. 1908) consider to represent this 

 species ; this form possesses spines intermediate in length between those of 

 this species and C. vestitum. The aperture varied from being about two- 

 thirds the diameter of the test to a narrow slit, according to the movements 

 of the animal. The pseudopodia, nucleus, etc., are accurately represented 

 hy Leidy. 



Diameter 32-35 [x ; nucleus 6 jx dia. with a well-defined central nucleole ; 

 spines about 8-10 [x in length. 



Distrihution. — Trout Pond, Good Ground, Long Island. 



Family Euglyphina. 



EUGLYPHA DENTICULATA, Brown. 



In Scott. Nat. 1912, p. Ill, pi. 5. figs. 5-11. 

 This recently described species bears a close resemblance to a colourless 



