256 



Report of the State Geologist. 



Genus Cypricardella, Hall. 



50. Cypricardella bellistriatus, Conrad. 



1885, Hall, Pal. N. Y., vol. 5, pt. 1, p. 308, pis. 42, 73, 74. 



This species occurs mostly as impressions on shale, or as imperfect valves 

 with the shell removed. Some fragments were found in the Idlewood ravine 

 about twenty -five feet below the Encrinal limestone, and others at Section 

 B, nine to twelve feet below the Encrinal limestone. An internal mould from 

 the Encrinal limestone, probably represents the short form of this species. 

 This species occurs sparingly in the Pleurodictyum beds and more rarely in 

 the shale above. A specimen from the Strophalosia bed belongs to this 

 species. 



Genus Nuculites, Conrad. 



51. Nuculites oblong atus, Conrad. 



1885, Hall, Pal. N. Y., vol. 5, pt. 1, p. 324, pi. 47. 



A single specimen of this species was found at Section C, four feet below 

 the Encrinal limestone. It is the internal mould of a left valve, with the 

 impression of the internal ridge well marked. The umbonal ridge is some- 

 what more angular than in the typical forms. The length of the specimen is 

 15 mm., its height 6.5 mm. Several other specimens in the same condition of 

 preservation were found in the Strophalosia bed on the lake shore. 



52. Nuculites Nyssa, Hall. 



1885, Hall, Pal. N. Y., vol. 5, pt. 1, p. 328, pi. 47. 



This species, originally described from concretionary layers in the shales 

 of the Hamilton group on the shore of lake Erie, has come under my obser- 

 vation only in the Strophalosia bed, where the specimens usually have the shell 

 denuded. It is not a common form. 



53. Nuculites triqueter, Conrad. 



1885, Hall, Pal. N. Y., vol. 5, pt. 1, p. 326, pis. 47, 93. 



Tli is species occurs only in the transition shales and in the Marcellus 

 shales on the lake shore. It is a rare form. 



