PLATE XL1I. 
Goniophora perangulata. 
Page 293. 
See Plate 34. 
Fig - . 1. The right side of a small specimen preserving the test and surface markings. 
Fig. 2. A cardinal view of a left valve showing the posterior muscular scar, the furrows left by its reces¬ 
sion from the beak, and the convexity of the valve. 
Schoharie grit. Schoharie, N. Y. 
Goniophora ? alata. 
Page 294. 
See Plate 34. 
Fig. 3. A large right valve, somewhat crushed along - the umbonal ridge and preserving - some of the 
stronger concentric striae. 
Schoharie grit. Schoharie, N. Y. 
Goniophora minor. 
Page 305. 
Fig. 4. A right valve. 
Figs. 5, 6. Left valves showing - some variation in form. 
Chemung group. Ithaca, N. Y. 
Goniophora rugosa. 
Page 297. 
See Plate 43. 
Fig. 7. A short, broad right valve of this species. 
Hamilton group. Shore of Cayuga lake, below Ithaca, N. Y. 
Fig. 8a. A short form with a strongly angular and curving umbonal ridge. A right valve of Microdon 
( Cypricardella) bellistriata is on the same block of stone. 
Hamilton group. Ludlowville, 2V. Y. 
Goniophora truncata. 
Page 298. 
See Plate 44. 
Fig. 9. A cardinal view of a right valve. 
Fig. 10. A left valve showing - muscular scars and pallial line. 
Hamilton group. Pratt's falls, JSf. Y. 
Goniophora carinata. 
Page 301. 
See Plate 44. 
Fig. 11. A right valve showing the principal characters of the species in a very satisfactory manner. 
Hamilton group. Ml. Upton, N. Y. 
Goniophora trigona. 
Page 302. 
See Plate 44. 
Fig. 12. A left valve, redrawn to show more clearly the specific characters than are represented in fig. 9 of 
plate 44. 
Chemung group. Franklin, Delaware Co., N. Y. 
