2.-.L' 



and rounded in front. Cardinal line usually straight, and 



not oblique. Umbonal slope a strong angular ridge, from 

 the beak to the post-inferior margin. A broad, undefined 

 cincture separates off the anterior portion. A strong car- 

 dinal tooth in the leftvalve fits into a depression in the right 

 valve. Ligament external. 



Goniophora Momo.MORPHOiDEs. Grabau. (Fig. 168.) 

 (1898: Rep't X. Y. State Geol. 1896: Faun. Ham. (Jr., 

 p. 254.) 



Distinguishing Characters. — Arcuate cardinal line: pro- 

 nounced arcuate umbonal ridge, 

 with the surface above the 

 ridge flat or slightly concave; 

 small anterior end, scarcely 

 extending beyond the beaks; 

 numerous strong, regular lines 

 of growth. 



Found in the Encrinal lime- 



Fio. 168. Goniophora modiomorphoides 

 A characteristic right valve. (Original.) 



stone, at Section 5 (where it is common ). 



Genits CYPRICARDELLA. Hall. 



| Ivpy. : Diminutive from Cyprieardia, Cyprina and Canlinm.] 

 (18.16: Trans. Albany Inst.. Vol. IV.) 



Shells with equal, inequilateral valves, which are trans- 

 versely sub-elliptical or sub-quadrate in outline. The car- 

 dinal line is straight or arcuate, the anterior end narrowed 

 mid rounded, and the posterior end broad and truncate. A 

 more or less defined umbonal ridge extends from the small 

 pointed beak to the posterior basal angle. Ligament ex- 

 ternal ; cardinal teeth, one in each valve. 



Cypricardella bellistriata. (Conrad.) (Fig. 169.) 

 (Pal. X. Y.. Vol. Y.. Pt. 1.. p. 308, Pis. XLIL. LXXIII., 

 LXXIV.) 



Distinguishing Characters.— Projecting rounded anterior 

 end, with a distinct depression, or lunule. below the beak; 



