28 



West Coast Shells, 1856, 307, Mr. Woodward states that this 

 species "resembles Limopsis." 



In Mr. Carpenter's later Report of 1863, he remarks that it 

 "resembles Psephistantilla (j^Venus{Trigona') t ant ill a, Gould), 

 On examining the type specimens, I find the shell to be a true 

 Limopsis, as surmised by Mr, Woodward, and very closely 

 allied to a common species in the well-marked cretaceous rock 

 of the upj)er Missouri country. 



146 = Area canalis, Conkad, Pacific R. R. Report VI, 70. 



147 = Area eongesta, Conrad, ib. 



148 = Area ineile, Say, Jour. Acad. N. Sci. IV, 8. 



149 = Area mierodonta, Conkad, Pacific R. R. Report V, 323. 



150 = Anomaloeardia trigintinaria, Conkad, Proceed. Acad. N. Sci. 



1862, 289. This and the other species ranged in the list under 

 the name Anadara, Gray, of course belong to Anomaloeardia, 

 Klein, 1753, which latter name I do not adopt from its ante-Lin- 

 usean date, and its author's irregular system of nomenclature. 



151 = Area protraeta, H. D.. and W. B. Rogers, Tr. Am. Phil. Soc. V, 



332. 

 152:= Area trilineata, Conkad, Pacific R. R. Report, V, 70. 



174 = Avicula multangula, H. C. Lea, Tr. Phila. Soc. IX, 1846, 245» 



51, 31. 



Probably belongs to an undescribed genus. 



175 = Perna montana, Conkad, Pacific R. R. Report VII, 195. The spe-; 



cimen for which this name was proposed is a very imperfect 

 cast, probably belonging to some other genus. 



176 =: Perna terta, Say, Am. Jour. Sci. II, 38. 



179 = Modiola contracta, Conrad, Pacific R. R. Rept. V, 325. If 

 Adanson's ante-Linnsean names are to be adopted (with his first 

 species of each as the type), all the shells in the list under the 

 name Volsella should be ranged under the name Perna, Ad. 

 (1757.) If neither his nor Scopoli's names are to be adopted, 

 then they would have to be included under Modiolus, Lamarck, 

 1779. 



180= Modiola spiniger, H. C. Lea, Trans. Am. PhiL Soc. IX, 244, 35, 

 30. 



i81 = Modiola dueatellii, Conkad, Mioc. Foss. 53, 28, 2. 



182 := Mytilus inflatus, Tuomey and Holmes, Plioc. Foss. S. Carr. 33, 

 14, 3. 



190 = Cardita abbreviata, Conrad, Am. Jour. Sci. XLI. (2), 2, 17. 

 This and all the other species in the list under the name Vene- 

 ricnrdia belong to Actimoholiis, Klein, 1753. But, I do not 

 adopt his names for reasons already stated. They also all 

 belong to sections of Venericardia, Lamarck, 1801, and cannot 

 be properly included in Cardita, Bruguiere, 1789, as restricted 



