3 Bulletin i ( 2 ) 



believed that with nearly all the type specimens of both collec- 

 tions before one and with complete copies of both Lea's and 

 Conrad's works in hand, the conclusions that one can draw on 

 matters of synonymy should be more trustworthy than those 

 based on literature or on literature and one type collection. 



It will be observed that no attempt is here made to rectify 

 generic references. But what species of the Conrad and Lea 

 collections are in the Academy; the names (generic and specific) 

 first applied to them; their equivalency— these are the facts in- 

 tended to be brought out by the following list. 



aciculata Lea 



Pasithea aciculata Lea, Cont. to Geol., 1833, p. 102, pi. 4, fig. 82. 



acutirostra Con. 

 Pleurotoma acutirostra Con., Foss. Sh. Tert. Form., 1835, p. 52, 

 pi. 17, fig. 21. 

 See PI. childreni Lea. 



acutus Lea 



Fusjis acutus Lea, Cont. to Geol., Dec, 1833, P- i49> P^- 5' f- i53- 

 Syn. of F. limulus Con., which see. 



sequalis Con. 

 Nticula cequalis Con. equals iV. equalis Con., which see. 



sequorea Con. 

 Cytherea ceq^wrea Con., Foss. Sh. Tert. Form., Sept., 1833, P- 3^; 



pi. 20, fig. 5 of Harris's republication. 

 Cytherea hydii Lea, Cont. to Geol., Dec, 1833, p. 66, pi. 2, f. 42. 



sequorea Con. 

 Erycina cequorea Con., Foss. Sh. Tert. Form., Nov., 1833, p. 42; 



pi. 19, fig. 1 1 of Harris's republication. 

 Mactra grayi Lea, Cont. to Geol., Dec, 1833, p. 42, pi. i, fig. 10. 

 Mactra (zquorea Con. 



Conrad's type specimen is lost. 



setites Con. 

 Natica cetites Con., Foss. Sh. Tert. Form., Nov., 1833, p. 46. 

 Natica mamma Lea, Cont. to Geol., Dec, 1833, p. 109, pi. 4, 



fig- 95- 

 Neverita cetites Con., Amer. Jr. Conch., 1865, p. 27. 



Conrad's description of this form is so imperfect that Lea's 

 name although published a month subsequent should hold. 



