174 Annals of the Carnf.gie Museum. 



Primitia seininuluin Jones. 



Ann. Mag. Nat. Hist., Ser. V, Vol. XVII, p. 413, pi. 14. 

 There are several specimens of this species. 



Octonaria sligmata Ulrich. 



Jour. Cinn. Soc. Nat. Hist., Vol. XIII, p. 193, pi. 16, figs. 8^-, l>. 

 Rather uncommon. 



Ctenobolina papulosa Ulrich. 



Jour. Cinn. Soc. Nat. Hist., Vol. XIII, \). 186, pl. 15, figs. ^a-c. 

 A few specimens are with some doubt referred to this species. 



Beyrichia kolmodini Jones. 



Jour. Cinn. Soc. Nat. Hist., Vol. XIII, \). 190, pl. XR', figs. \a-c. 

 This species is common. 



Halliella rctifcra Ulrich. 



Jour. Cinn. Soc. Nat. Hist., Vol. VII, p. 185, pl. 15, figs. ^a-c. 

 Another rare species. 



Moorea bicornuta Ulrich, 



Jour. Cinn. Soc. Nat. Hist., Vol. XIII, p. 191, pl. 16, figs. A,a-c. 

 Only a couple of specimens of this ostracod were found. 



Osiracoda sps. 



Several other species of ostracods were obtained, but have not yet 

 been identified. 



Procius }'(nui Green. 



Pal. N. Y., Vol. VII, p. 119, pis. 21, 23. 



A few separated head and tail shields of this species were found. 

 They were of small size. The species occurs rarely in the sections 

 from Eighteen Mile Creek to Cayuga Lake, and a single specimen has 

 been found at Worcester in Otsego county. 



Cyphaspis ornatas Hall. 



Illust. Dev. Foss., 1876, pl. 21. 

 A single fragment of a specimen of this species was found. 



Dipleitra dekayi Green. 



Pal. N. v.. Vol. 7, p. 7, pis. 2-5. 

 Portions of several tail shields were obtained. The species occurs 

 from Eighteen Mile Creek to Otsego Co. 



Phacops 7'atia Green. 



Pall. N. v.. VII, p. 19, pis. 7, 8, 8 A. 



