220 PROCEEDINGS OF THE ACADEMY OF [1893. 



Through the courtesy of several members of the two classes a 

 considerable number of the specimens they procured were sub- 

 mitted for examination. These together with those previously 

 collected were carefully compared by H. A. Pilsbry and the 

 speaker with the figures and text of Whitfield's Paleontology of 

 New Jersey and with the works of other authorities, and also Avith 

 the types and other specimens in the Museum of the Academy. 



One form, Voluta delaivarensis, was identified by Professor R. P. 

 Whitfield. Professor A. Heilprin kindly assisted in the final 

 determination of a few forms. In nomenclature we have followed 

 Whitfield, to whose work the specialist is referred for synonyms and 

 references to other literature. For convenience the volume, page, 

 j)late and figure where each is described and illustrated are noted. 

 The list is as follows : 



CEPHALOPODA. 



Ammonites (Placentaceras) placenta DeKay. 1 Vol. II, page 255 

 pi. XL, fig. 1, XLI, figs. 1 and 2. 



Ammonites delaivarensis Morton. Vol. II, page 252, pi. XLII, figs. 

 6 to 9. 



Scavhites hippocrepis DeKay. Vol. II, page 262, pi. XLIV, figs. 

 8 to 12. 



Scaphites nodosus Owen. Vol. II, page 261, pi. XLIV, figs. 13 and 

 14. 



Baculites ovatus Say. Vol. II, page 275, pi. XLVI, figs. 3 to 9. 



GASTEROPODA. 



Cerithium (Potamides f) Sp. ? 



Dentalium subarcuahim Conrad, internal casts. Vol. II, page 166, 

 pi. XX, figs. 19 and 20. 



Dentalium subareuatum Conrad, external impression. Vol. II, 

 page 166, pi. XX, figs. 21 to 24. 



Alaria rostrata Gabb, (numerous). Vol. II, page 119, pi. XIV, 

 figs. 5 and 6. 



Gyrodes infracarinata Gabb. Vol. II, page 125, pi. XV, figs. 13 

 to 16. 



Lunatia halli Gabb. Vol. II, page 130, pi. XVI, figs. 13 to 16. 



Natica abyssina Morton. Vol. II, page 123, pi. XV, fig. 9 to 12. 



Turbinella parva Gabb. Vol. II, page 80, pi. IX, figs. 4 to 6. 



Turritellavertebroides~Morton(y). Vol. II, page 146, pi. XVIII, 

 figs. 13 to 18. 



Voluta (?) delaivarensis Gabb. Vol. II, page 84, pi. X, figs. 5 to 7. 



Volutoderma abbotii Gabb. Vol. II, page 173, pi. XXI, figs. 4 to 9. 



Volutomorpha — Sp. ? 



Avellana bullata Morton. Vol. II, page 163, pi. XX, figs. 1 to 4. 



1 The references are to Whitfield's Palaeontology of New Jersey. 



