156 PROCEEDINGS OF THE CALIFORNIA 



for the State Geological Survey of California. Being aware that I was en- 

 gaged in preparing descriptions of the shells of the Smithsonian collections, to 

 serve as a handbook on the Mollusca of the western coast, and also (at the 

 present time), a " Supplementary Report on the present state of our knowledge 

 of the Mollusca of the west coast of North America," for the British Associa- 

 tion ; he has very obligingly transmitted to me such duplicates as could be 

 spared from the State collection for identification. 



^ Calliostoma Swainson, 1840. 



Calliostorna formosum Carp. n. sp. State Collection, Species 615 a. 



C. t. subelevata, bruunescens, fusco-purpureo nebulosa, anfr. vii. valde tumen- 

 tibus, suturis impressis ; carinis majoribus in spira duabus, gemmatis, interdum 

 brunneo hue et illuc tinctis ; serie granulorum minorum prope suturam ; serie 

 quarta minimorum inter duas carinas ; lirulis basalibus circ. ix., fusco maculatis ; 

 interstitiis a lineis incrementi corrugatis ; apertura subquadrata. Long. 0.47. 

 long. spir. 0.34, lat. 0.43, div. 68°. 



Hab. San Pedro five ; San Diego four dead on beach at low water — very 

 rare. It is well distinguished by the two principal necklaces, with smaller rows 

 intercalating. In coloring it resembles C. eximium Reeve, (versicolor Menke, 

 Mazatlan Catal.). from the Gulf of California. 



Calliostoma splendens Carp. n. sp. State Collection, Species 530 a. 



C. t. parva, latiore, tenuiore ; exquisite rufo-castaneo et purpureo, interdum 

 intensioribus, et livido, varie nebulosa et punctata ; anfractu primo nucleoso 

 diaphano, granuloso, apice mamillato ; dein iv. normalibus, subtabulatis ; primo 

 costibus spiralibus ii. acutis, valde expressis, altera parva suturali ; anfr. penult, 

 costis iii. quarum media extantior, superior subgranulosa ; anfr. ult. aliis inter- 

 calantibus, supra peripheriam v. quarum tertia magis extans ; interstitiis a lineis 

 incrementi vix decussatis ; costa circa peripheriam angulatam conspicua ; basi 

 costulis rotuudatis, haud extantibus, peripheriam et axim versus conspicuis, 

 medio saepe obsoletis ; basi nitida, subplanata ; apertura subquadrata, intus 

 carneo-nacrea, valde splendente : operculo tenuissimo, levissimo, pallido, dia- 

 phano, concavo; anfr. circ. x. crebris, parum definitis. 



Long. 0.23, long. spir. 0.15, lat. 0.24, div. 87°. 



Hab. Monterey, 20 fms. dredged 2, dead ; Santa Barbara, in roots of kelp 

 growing in about 10 fms. 13, dredged in 16 fms. 2, dead ; S. B. Island, 2, dead, 

 on beach ; Catalina Island, 30-40 fms. 2, alive ; San Diego, 1, dead. 



The specimens here described are probably mature, and are well marked in 

 character. The painting is richly lustrous, of a fleshy nacre inside ; outside, of 

 a rich orange-chestnut or red, variously laid on a light ground, sometimes with 

 streaks of nacreous purple, often with dots on the ribs. The operculum is 

 extremely thin and transparent. 



Solariella Searles Wood, 1843. 

 Solariella peramabilis Carp. n. sp. State Collection, Species 1025. 

 S. t. tenuissima, elegantissime sculpta, livida, rufo-fusco pallide maculata ; 

 anfr. nucl. ii. valde tumidis, tevibus, apice mamillato ; dein anfr. norm. iv. tabu- 



