4 DR. P. P. CARPENTER ON THE SHELLS OF PANAMA. 



33. Oliru (traiieosn = 0. nttlcfiersi, M. 591 . Prof. Adams's shanty 

 speciiiKMi can scarcely be tlistiii|;iii.-lK'(l tVom that wiiich lie marked 

 " O. literatd, Alabama." But the ordinary a>|)ect of the shells O. 

 retiailarin from the Caribbean Islands, O. litfrata from the coast of 

 the Soutbcrn States, and U. inelchersi from the Pacitic, is sutHcieutly 

 distinct (tor the genus). 



3J. Oliva inconspicua, C. B. \i\. = OliveJIa i., M. .")99. Some of 

 tlie shells lelerred to this species from Panama, Mazailan, and Cape 

 St. Lucas graduate into the Caribl)ean O. unjza ; otliers^into dwarf 

 forms of O. (/ruci/is. The s])ecies ei her needs revision from fresh 

 specimens, or should be merged into O. yrucilis. 



3.5. Oliva j)elluciJa, C. B. Ad. Dead specimen ; differs from 

 OUce/la p., Bve. 



36. Oliva jiorphyria. Stet. 



37. Oliva aetiiislriata:=OliveUa s. Closely resembles O. colu- 

 mellaris. 



'S^. Oliva te.'itacea = Agnronia t., M. 602. 



39. Oliva uiulatella^=Olivella u., M. ■")9.'j. 



40. Oliva renvlata. This shanty specimen is O. angnJnta, jnn. 

 The O. vciin/ata, M. 593, is named by Prof. Adams O juUetta, as 

 also by Mke. (non Duel.). The true O.jnlittta ((Juacomayo, Mus. 

 Smiths.) is the Pacific "analogue" of O . fmiforni is . 



41. Oliva volutella^Olivella v. It is surprising that this species, 

 so immensely common at Panama and up the coast, should not reach 

 the Gulf, and that the equally common O. tergina of Mazatlan and 

 O. yrucilis of Cape St. Lucas and Acapulco should be rare elsewhere, 

 while the larger Olives are foiuid from Guaymas to the equator. 

 O. (lama ( = lineolata, Gray, C. B. Ad.), abundant at Mazatlan, was 

 bought, not collected, by the Professor at Panama. 



42 Plat»axis planicostata. Stet. Also immensely common at 

 Panama, though absent from Mazatlan. 



43. Nassa canescens, C. B. Ad. Having compared this unique 

 specimen with P. 50, q. v., I can speak to their complete identity. 

 The "pale grey" of the "interspaces" is due to the shell being 

 dead. 



44, 45. Stent. 



46. Nassa gemimilosa=^^l. 631, exactly. 



47. Stet. 



48. Nassa luteostoma=-^l. 623. 



49. Aassa noJifera. Also found at Guaymas. 



50. Nassa pagodus, C. B. Ad. {-{- N. canescens, P. '1,"^) »« /V. 

 (? nagodus, var.) acuta, ^L 625. It is certainly the N. decussata 

 ol K.ien., but probably not of Lam. Whether it is the Trifun pago- 

 dus cf Rve. I am still unable to say, the type being apparently lost. 

 We a;e bound to suppose that Mr. Reeve could not mistake so de- 



ITJi 



