1905.] NATURAL SCIENCES OF PHILADELPHIA. 27 



Baculites carinatus Morton, Syn. Org. Rem., 44, pi. 13, f. 1, 1834. 

 Baciilites labyrinthicus Morton, Syn. Org. Rem., 44, pi. 13, f. 10, 1834. 

 Baculites columna Morton, Syn. Org. Rem., 44, pi. 19, f. 8, 1834. 



The specimen, although marked type, does not agree with the figure. 

 Morton's original label, which accompanied all the others, was wanting 

 in this case. 



Solenoceras annulifer (Morton). 



Hamites annulifer Morton, Jour. Acad. Nat. Sci., VIII, 213, pi. 11, f. 4. 

 Solenoceras aniiulifer Conr., Jour. Acad. Nat. Sci., IV, 2 ser., 284. 



The type of Conrad's genus Solonoceras. Whitfield refers it to the 

 genus Ptychoccras, and also figures the type. 



Hamites arculus Morton, Syn. Org. Rem., 44, pi. 15, figs. 1, 2, 1834. 

 Hamites torquatus Morton, Syn. Org. Rem., 45, pi. 15, f. 4, 1834. 

 Hamites trabeatus Morton, Syn. Org. Rem., 45, pi. 15, f. 4, 1834. 

 Heteroceras conradi (Morton). 



Ammonceraiites conradi Morton, Jour. Acad. Nat. Sci., VIII, 212, pi. 10 

 f. 1, 1841. ' y i- , 



Heteroceras conradi Whitfield, Mon. U. S. Geol. Sur., XVIII, 269 pi 45 

 figs. 9, 10, 11, and 14. 



Scaphites Mppocrepis (DeKay). 



Scaphites cuvieri Morton, Jour. Acad. Nat. Sci., VI, 109, pi. 7, f. 1, 1828. 



Morton's type. 



Scaphites reniformis Morton, Syn. Org. Rem., 42, pJ. 2, f. 6, 1843. 



The type reported missing by Dr. Wliitfield was found in working 

 over the material. 



Scaphites iris Conrad, Jour. Acad. Nat. Sci., Ill, 2 ser., 335, pi. 35, f. 23. 

 Scaphites similis Whitfield, Mon. U. S. Geol. Sur., XVIII, pi. 44, figs. 1, 2, 1892. 

 Scaphites conradi (Morton). 



Ammonites conradi Morton, Syn. Org. Rem., 39, pi. 16, f. 3, 1834. 

 Avimonites conradi Morton, var. A. gulosus, I. c, pi. 16, f. 2. 

 Ammonites conradi Morton, var. B. petechialis, I. c, 40, pi. 16, f. 1. 

 Ammonites conradi Morton, var. C. navicularis, I. c, 40, pi. 19, f. 4. 



Types of the species and all the varieties. 



Ammonites delawarensis Morton, Am. Jour. Sci., XVIII, 244, pi. 2, f. 4, 1830. 



Specimens figured by Whitfield (pi. 42, figs. 6, 7, 8, and pi. 43, 

 figs. 1, 2). 



Ammonites vanuxemi Morton, Am. Jour. Sci., XVIII, 244, pi. 3, figs. 3, 4, 1830. 

 Ammonites dentatocarinatus Roemer. 



Specimen figured by Whitfield (pi. 41, figs. 3, 4). 



Placenticeras spillmani Hyatt, Mon. U. S. Geol. Sur., XLIV, 233, pi. 47, figs. 6-8, 1903. 

 Placenticeras placenta (DeKay). 



Specimen figured by Whitfield (pi. 40). Also specimens figured by 

 Hyatt {Mon. U. S. Geol. Sur., XLIV, pi. 39, figs. 3-6). 



