DlACNOSKS OF NKW SpECIFS OF MoLLT'SKS, FROM THE WfSI 



Tropical Rkc;ion of Nokth Amkkica, i'kincii'ai.ly col 

 lf.c:ted by the Rev. J. Kowei.l, of San Fkancisco. Bt 

 Philip P. Carpenter, B.A., Ph.D. 



Of tlie new species quoted in the " Supplementary Reporc on thf 

 Present State of our Knowledge of the Mollusea of the We^t Coa.-« 

 of North America," puhlished in the Transactions of the British As 

 so;'iation, 1S63, pp. olz-nsfi, the principal portion (namely, thos« 

 dredijed by Dr. J. 6. Cooper, Zoologist to the CaHfornian State 

 Geological Surrey) are descrilied in tlie ' Proceedings of the California 

 Aead. Nat. Science?,' for lSG4-(i."); those dredged in Pnget Sound, 

 during the U. S. North Pacific Boundary Survey, by the late Dr. 

 Kennerley, are described in the 'Journal of the lMiilad(l|>liia Acad. 

 Nat. Sc' for the t)resent year. The species obtained i)y the natu- 

 ralists of the British Survey are described in three jiapers by Dr. 

 Baird and myself, P. Z. S. lS(i,3-()r). The new species sent by 

 Mr. J. Xantus from Cape St. Lucas, and by Mr. J. G. Swan from 

 Neeah Bay, appear in the 'Ann. and Mag. Nat. Hist.,' 1804-65. In 

 the same Journal are described the new species which I found in 

 Col. Jewett's collection. Those sent to Dr. Gould from the same col- 

 lection had been previously analyzed in the ' Proc. Zool. Soc' 18r)6. 

 Tlie above are the princijial sources of fresh knowledge; but a nund)er 

 of species from the C'alifornian province, which do not range undc;* 

 any of these heads, will be found in the 'Journal de Conchy liologie' 

 for the current year. 



In separate papers communicated to the Zoological Society are the 

 diagnoses of additional species from Prof. Adams's Panama and from 

 M. Reigen's Mazatlan collections. The remaining species, from the 

 tropical province, are embodied in the present pajjcr. The types 

 (unless otherwise stated) are iu the Museum of the Sniilhsoniau 

 Institution. 



(Tellina) Angulus decumbens. 



A. t. teniii, s}if)pln)uita, uiha seu rosacea; JfPvi, striolis inere- 

 meiifi niS'-tilptd ; epiilermide jxiUide sfrawl/iea uu/iita ; aiitice 

 et reittraliter rahle producta ; postice truncata, anyulata ; 

 vndjonifnis aculiitriljus, vix promiiientilus ; Diarginiiiis dorsn- 

 lif/Hs postico recto, antico nd unguium parinn excurvato, antico 

 et ventrali valde et reyulariter excurvatis ; parte postica v. 

 dexfr. subito angulatu, r. sinistr. parum sinuata ; nyitiphis an- 

 (fvsfis, elotiyuLis, cartilayine omnino externa : dent. card, m* 

 nimis ; dent. lot. v. dextr. antico satis conspicuo, postico oLso- 

 leto; V. sinistr. nullis ; cicatr. adduct. j^osticis su/jr/ioinboideis, 

 auticis valde elongatis, anyustis ; sinu pallii maximo, sul/tri- 

 anyulari, usque ad ctcatricem alteram utraque valva porrecta. 



Long, r", lat. 1-2, alt. 68 poll. 



Jlah. Panama (teste Howell, Pease). 



This shell was atliliated bv Mr. Ilanley to the W. African T. 



' 271 



