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



case this and similar species must be moved to Kitidella, if the oper- 

 culum be (as is presumed) Purpuroid ; or to Amyclu, if Nassoid. 



96. Cohimhella vioesta — Jnachis m. 



97 CohimbelJa nigricans= Anachis n. 



98. CohirnheUa parva. This appears to be only a dead specimen 

 of C. pTjf/mcea, P. 100. 



99. CoJumheUa pnlchrior is probably a Nitidella. 



100. Columbella py(fincBa = /inachis p., Ivi D.t1. 



101. Cofnmhelta rvf/oso = Anachis r. Tiiis appears to be the 

 commonest and most variable s])ecies of the genus. The typical 

 S]tecimens are somewhat stuni])y, with stout knobs. Then the knobs 

 pass into long, com])ressed ridges, and finally change into narrow 

 bars. These are wide apart, or close, or nearly evanescent on the 

 back. The shape passes from the stumpy to an acuminate form 

 like costellata. Some adults are more than twice the size of others; 

 but the same variations are found in both extremes. The colours 

 are generally laid on in patches on the knobby specimens ; in fine 

 flames, on the smoother ones. In all varieties, it is known from 



Jiuctnuta bv the spiral striae over the whole surface ; and from va7'iu 

 by the shoulder, more or less developed into a keel, ou the whorls of 

 the spire. 



102. Columbella strombiformis, M. 616. 



103. Columbella tessellata, C. B. Ad. (non Gai^\..) = Anachis gua- 

 temalensis, Rve. 



104. Columbella turrita=^Strombina t. 



105. Columbella varia-= Anachis v. 



106. Columbella sp. ind. is the young of a species in Mus. 

 Cuming., resembling harp(efor7nis. 



107 Ricinula carbonaria^=Engina c. 



108. Ricinula jugosa may be an Engina, but has more the aspect 

 of the Pacific group Pet-isternia. 



109. Ricinula reeviana = Engina pulchra, Rve. 



110. Cassis abbreviata=Bezoa7-dica a. On comparing a large 

 series of specimens from Cape St. Lucas with a similar series of C. 

 infiata from Texas, I was unable to discover any specific differences. 

 It varies greatly, from each ocean, in painting, sculpture, height of 

 spire, &c. 



111. Cassis coarctata=Levenia c 



112. 113, 114( = M.4S0), llj, 116( = M.48l), 117, 118*( = M. 

 476), 119* ( = M. 477), 120 ( = M. 47.5), 121, 122 ( = M. 381, 

 galeatus), 123 ( = M. 449), 124 ( = M. 448), 125. Stent. 



* Having now examined a large number of specimens of these two forms, I 

 have no hesitation whatever in regarding Conun regalUotis as simply a variety of 

 C. purpurascens. Similar difl'creiices may be observed in comi^aring large series 

 of almost all Cones. 



181 



