FKOM NEW YORK, NEW JERSEY, AND GEORGIA. 131 



A. mitrata, there is a superficial resemblance to the pattern on the tests of 

 some forms of Cypliod'ena ampulla (vide 45. pi. ii. fig. 10 d^. 

 Diameter 80-157 jjl ; aperture 18-35 //,. 



Var. GIBBOSA (Pen.), West. 



A. vulgaris pars, Leidy, pi. 27. figs. 16, 23-35 (30). 



Grenerally distributed but never numerous. Diameter 50-82 [jl. 



Var. COMPRESSA, Cash (10). 



A. artocrea, Peuard (36). 



A. vulgaris pars, Leidy, pi. 28. fio's. 4-7 (30). 



Not common, but of normal size ; about 120 fi in diameter. 



Genus P8EUD0CHLAMYS, Clap. S{ LacJini. 



Cockerell (12, 1911) names this genus Microclilamys, the name Pseudo- 

 cldamys having been previously used for a beetle (Zool. Anzeiger, xxxviii. 

 Nr. 5/6, 15.8.1911). 



Genus CoRYCiA, Dujardin. 



CORYCIA FLAVA, Gveef. 



Not numerous but generally distributed ; usually found in mosses. 

 Diameter 60-80 /*. 



Distribution. Georgia; New Jersey; New York ; Canada (39). 



[(Jockerell puts forward ^' Alicrvcorf/ia" as a name for this genus for 

 reasons stated in Zool. Anzeiger, Bd. xxxviii. Nr. 5/6, 15. 8. 1911.] 



Genus BuLLiNULA, Penard. 



BuLLiNULA INDICA, Pen. (emend.) J. Roy. Micr. Soc. 1907. 

 Found in sphagnum but not common. 



Diameter usually about 160 /i ; an individual at Lakehurst measured : 

 length 225 /x, breadth 190 /«., aperture 87 /*. 



Distribution. New Jersey ; Long Island, N.Y. : Canada (39). 



Genus Plagiopyxis, Penard. 



Plagiopyxis callida. Pen. (37, 1910). 



This species has a world-wide distribution, but is easily overlooked owing 

 to its having the appearance of a spheroidal form of Diftugia constricta or 

 some other species with a similarly shaped test, but a careful examination 

 of the aperture, which is often difficult to locate, will reveal its identity. 

 Diameter 90-110 /^. 



Distribution. Switzerland [Penard) ; British Isles (45) ; New Zealand ; 

 Australia ; British Columbia (39) ; Borneo, 



