170 NEW YORK STATE MUSEUM 



onychochilus Lindstrbm 



Onychochilus (?) nitidulus? Clarke 



PI. 9, fig. 20 



N. Y. state geol. 13th an. rep't. 1894. p, 172, pi. 4 

 In bed III is found a minute sinistrally coiled gastropod which 

 corresponds with Clarke's description and figures except that, 

 instead of a faint carination of the whorls, there is a distinct 

 spiral band. The concentric growth lines are interrupted in 

 passing over this band, which is apparently partially filled by 

 foreign matter. This feature is well shown on the body whorls 

 of one specimen only, but, if the discovery of other specimens 

 confirm this observation, they should be referred to the genus 

 Hesperiella of Holzapfel rather than Onychochilus, with which I 

 have doubtfully placed my specimens. 



LOXONEMA Phillips 



Loxonema sp. 



Several longitudinal sections, having the general proportions) 

 of Loxonema hamiltoniae, were seen on the weathered 

 surface of bed III, and a few whorls possibly of the same species 



in bed II. 



platyceras Conrad 



Platyceras (Orthonychia) attenuatum Hall 



Pal. N. Y. vol. 5, pt 2, p. 6, pi. 3 



A single compressed specimen was found in bed VI. The 

 small apex and undulating lines of growth are well shown. Its 

 length is 25 mm, and width at the peristome 20 mm. 



PTEROPODA 



styliolina Karpinsky 

 Styliolina fissurella (Hall) 

 Pal. N. Y. vol. 5, pt 2, p. 178, pi. 31 



This species is found in bed VII of the limestones where it is 

 sparingly represented, but it is extremely common in the shales, 

 being found in all the beds both below and above the limestone. 

 Nearly all the shells show a line of fracture along the median 

 line, due to compression. 



