Tropidoleptus Fauna at Canandaigua Lakk, X. \. 173 



Styliola, sp. 



A few specimens of some species of this genus were observed in the 

 blocks before etching. 



Teutaciilites be I hi I us Hall. 



Pal. N. Y., Vol. ^^ pt. 2, p. 169, pis. 31, 31/4. 



Individuals of this si)ecies are very numerous and show some \aria- 

 tion in the annulations. The species is fairly common at Livonia and 

 very rare at Cayuga Lake. 



Hyolithcs acilis Hall. 



Pal. N. Y., Vol. V, p. 2, p. 197, pis. 32, 32^. 

 Three small specimens represent the apical end of this species. It 

 is found rarely throughout the Cayuga Lake section. 

 Platyceras thetys Hall. 



Pal. N. v., Vol. V, pt. 2. p. 8. 

 There are a few small, not very perfectly preserved specimens be- 

 longing to this species. It occurs at Livonia and in Albany county. 



Cephalopoda. 



OrtJwceras. 



The siphuncle of some small species of Ortl'occras was obtained. 



Crustacea. 



Priniitopsis punctilifera Hall . 



13 Ann. Rept. N. Y. State Mus. Nat. Hist., p. 92. 

 A few specimens are referred to this species. It is common at 

 Thedford and rare throughout the section at Eighteen Mile Creek. 

 Kirkbya parable la Ulrich. 



Jour. Cinn. Soc. Nat. Hist., Vol. XIII, p. 192, pi. 15, figs. 2a, b. 

 This species is fairly common. 

 Sirepii/a sigvwidalis Jones. 



Quar. Jour. Geol. Soc, Vol. XLVT, p. ir. 

 This is one of the most common of the ostracods in this collection. 



Isochilina lineata Jones. 



Quart. Jour. Geol. Soc, \^ol. 46, p. 21, pi. 2, figs, 5;?, /', Za, b. 

 Only a few specimens found. 

 /. fabacea Jones. 



Quart. Jour. Geol. Soc, Vol. XLVI, p. 22, pi. 2. 

 This species is also very rare. 



