ON MOL1.USCA OF THE WEST COAST OF NORTH AMERICA. 



Agaroma testacea, N. 



Riiizocheilus madreporarum. 2 living 



sp. on coral, J. 

 Columbella uncinata,*/". ; hmnerosa, n. s. } 



R. ; varians, var., N. [PImported from 



Sandw. Is.] 



Nassa coliaria, N. ; ambigua, TV/owf., teste 

 Hani.. N. [Probably imported from 

 W.I.] 



Anacbis coronata, N. ; Californica, J". 



Muricidea alveata, J. 



Phyllonotus brassica, N. 



The following species are part of a collection received at the Smithsonian 

 Inst. from Real Llejos, and fill up gaps which existed in the Central Ameri- 

 can fauna at the time of the first Report : 



Discina Cumingii. Caecum liratocinctum. 



Trigona Hindsii. 

 Hemicardium obovale. 

 Crassatella gibbosa. 

 Kellia suborbicularis. 

 Barbatia mutabilis. 

 Noetia reversa. 

 Axinaea Pmulticostata. 

 Fissurella rugosa. 

 Phasianella perforata. 

 Omphalius viridulus. 

 Hipponyx barbatus. 



Caecum laeve. 

 Cerithium interruptum, var. 

 Barleeia subtenuis. 

 Aricia punctulata. 

 Terebra strigata. 

 Cerithiopsis assimilata. 

 Triforis alternata. 

 Olivella gracilis. 

 PNitidella millepunctata. 

 Northia pristis. 

 Pisania sanguinolenta. 



The collections received at the Smithsonian Inst. from Panama consist, in the 

 main, of species already tabulated from that region. The following, however, 

 are new to that well-searched portion of the fauna : 



Tellina striata (teste Cuming), Rowell, Pease. 



Tellina (Angulus) amplectcms, n. s., Rowell, Pease. 



Adula stylina. | Californian species : either ballast or error in num- 



Pecten aquisulcatus, jun. j bering : Rowell. 



Litorina. Small spotted species, n. s., teste Cuming, but appears identical 



with the W. Indian : probably imported : Roivell. 

 Fluminicola, sp., Rowell. 

 Drillia albolaqueata , n. s., Rowell. 

 Natica catenata, Rowell. 

 Cmna costata, Rowell. 



115. The Pulmonates of the Pacific slope h.Lve not formed a special study 

 with the writer of this Report, as they were already in the abler hands of 

 Messrs. Binney, Bland, and other eminent T> ansatlantic naturalists. The 

 opinions of Mr. Binney as to synonymy, &c., with descriptions of new 

 species and details of those previously known, were given in papers pub- 

 lished in the ' Proc. Ac. Nat. Sc. Phil.' as follows: " Descriptions of American 

 Land Shells," Feb. 1857; "Notes on American Land Shells," Oct. 1857, 

 May 1858, Nov. 1858, July 1859 : and also in the Proc. Bost. N. H. S.,' 

 < Description of two supposed new species of American Land Shells," Apr. 

 1857. These are embodied in ' The Terrestrial Air-Breathing Molluscs of the 

 United States and the adjacent Territories of North America,' vol. iv., by 

 W. U. Binney, Boston, 1859. It was first printed in the Boston Journal 

 of Natural History,' vol. vii., and is intended as a Supplement to the great 

 treatise by his father, vols. i.-iii., on the same subject. It is impossible to 

 speak in too high terms of commendation of the manner in which this work 

 has been prepared and executed, and of the beautiful figures drawn by Otto 

 K o'liler. The more matured views of the author were embodied in the 

 ' Check-List of the Terrestrial Gasteropoda of North America,' published by 

 the Smithsonian Inst., June 1860, of which a second edition was soon issuco. 

 The species were divided into three series, (1) those of the Pacific coast, 



155 



