784 Report or THE StTaTE GEoLoGIsT. 
Amphitomella, Bittner. 1890. 
Smooth shells with a very strong double cardinal process, and 
a median septum in each valve extending the entire length of 
the shell and dividing the cavity into two chambers. Jugum 
Fie 323.—Amphitomella hemispheroidica, Klipstein (sp.). (CBITTNER.) 
situated posteriorly ; saddle scarcely developed; intercalary 
lamelle extending for nearly the entire length of the primary 
lamellze. 
Type, Amphitomella hemispheroidica, Klipstein (sp.). 
Distribution. Triassic. 
(?) Pomatospirella, Bittner. 1892. 
Shells small, unevenly convex, having the contour of Daya 
and Cyotosrrra. Hinge-line straight, cardinal area absent 
Fias, 324-326.—Pomatospirella thecidium, Bittner. (B1TTNER.) 
Shell smooth, fibrous, the fibres converging toward a median 
line. Interior unknown. 
Type, Pomatospirella thecidium, Bittner. 
Distribution. Triassic. 
(This genus is insufficiently characterized. Its known structure does not 
serve to distinguish it from the other genera mentioned.) 
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