SECTION B.] NORTH AMERICAN CONCHOLOGY. 



521 



Conrad. — Monograph of the genus Argonauta, Linne, with 

 descriptions of five new species : by T. A. Conrad. (From 

 same as last, p. 331.) 



Pa. 



PI. 



Fig. 







331 







Argonauta argo Linn. 



Mediterranean. 



331 







compressa Blainv. 



Indian Ocean. 



331 



xxxiv 



1 



papyratia Conr. 





332 







gondola Dillw. 

 A. navicula Sol. ? 

 CrancTiii Leach? 

 haustrum Dillw. ? 

 raricosta Blainv. 



Sontli Atlantic. 



332 







hians Sol. 

 A. nitida DesL.. in Lam. 



Sontli Atlantic. 



332 







0"weni Adams. 



South Atlantic. 



332 







nodosa Sol. 

 A. tuberculata Shaw. 

 tuberculosa Lam. 



Indian Ocean. 



332 



xxxiv 



2 



cornuta Corir. 





332 



xxxiv 



3 



dispar Conr, 





333 



xxxiv 



4 



polita Conr. 





333 







Nouryi Lorois. 



Pacific Ocean. 



334 







crassicosta Blainv. 



Australia. 



334 







naviformis. 



A. argo (var.) Poli. 





334 







geniculata Gould. 





Gould. — List of Shells brought home by the U. S. N. Astro- 

 nomical Expedition : by Aug. A. Gould. (Prom the United 

 States Astronomical Expedition to the Southern Hemisphere, 

 during the years 1849-52, Lieut. J. M. Gillis, Superintendent. 

 Vol. ii, p. 2G3. Washington, 1855. Thirty-third Congress, 

 First Session, House of Representatives, Ex. Doc, I^o. 121, 

 4to.) 



[No descriptions are given. — "W. G. B.] 



Page. 



263 Chiton aculeatus Linn. 



Coquimbo. 

 263 splniferus Fremll. 



263 magnificus Desk. 



263 olivaceus Frembl. 



Page. 



263 



263 



263 



263 



Chiton Peruvianus Lam. 



granoaus Frembl. 



Cumingii S<nvb. 

 Oliva Peruviana Lam. 



Coquimbo. 



