GASTEROPODA FECTINIBRANCHIATA. $5 



Soi. l.nm. 



I, distinguished from s-.ll other Troehi by a very broad conical 

 spire, at tin- base of which is an J wide umbilicus in which 



may be seen the internal e i tin- whorls, marked by a cre- 



C nl*. 



//>//. 



*hrlls resembling a Solarium, but wanting : lions u 



tli.' internal whorls of the nmbili ;-!. The gen** 



I;BO, Lht.$ 



i - with a completely and regularly turbi- 



nated shell, and a perfectly round aperture. Close observation has 

 omuaed them to 1 greaily subdivided. In th-- 



TURBO, Lnm. Properly -vo called, 



Have the shell round or oval, and thick ; the aperture completed on 



next to the spire, by the penultimate whorl. The animal 



has two long tontacula, and the. c v yes placed on pedicles at their ex- 



ternal base ; the sides of the foot are provided with membranous 



wings, sometimes simple, at others fringed, and occasionally fur- 



n'lMK' 1 with one or two filaments. It is to some of these that belong 



*hosc petrous and thick opercula observed in cabinets, which were 



loyed in m "li/me uudT the name of Unrjuis odoratu*. 



Som L ' of them, MKLKAC>EII, Montf. are umbilicatcd, and others, 



Ti-iujD, Montf.,|| are not. 



DELPHINULA, Lam. 



1 1 IT the shell thick, as in Turbo, but convoluted in nearly the same 

 plan.-; tin- aperture completely formed by the last whorl, and the 

 margin not tumid ; the animal similar to that of a Turbo. 



* 2V. perspective, L., < i. nil 96; TV. sfnt, :iint's, Ib. 1699; 



Tc. rarieyutus, Ib., 1708 1709; Tr. infundibuliformis, Ib., 1 70H 17<>7. 



<i\}>h alus ptn tunyuhti'us, Smverb., Min. Conch., I, pi. xlv. f. 2; Ki: nodosvs, 

 I I., \i I, t \r. 



.usiitutc^ the- family CRICOSTOMA of Blainville. 



7V/' l.i-t., 640, 30 ; T. argt/rostomits, Chemn., \ ;7.">s 



61; T. mmv/<.' Ib., I 7>2 ; T. rersicolor, List., 576, 29; T. mespilus, 



Clu-nni.. \, dzzvi, i 7 t ^ 43; T. granulahts, Ib., 44 16; T. /i/rfiw, Ib., 48, 



-T. tKattrina, Id., p. 143; T. cinrrfirs, !Vrn.. XII, 2.1. M ulus, 



Chemn.. \, i>. -2:' WiNt, Ib.. > 41. 



|| TII 584, 39; T. cochlus, Ib., 40; T. chiyiostorHW:, 



st., <547, 41 ; T. W, Id., 587, 



46; T. sarmatims, Chemn is. i 7si .- T. rormttvs, Ib., 1 779 



80; T. ,-l\\\iii, 1771, 72 : 7*. w't I . C, 1788 89; T. 



iiii}>t>-i<i:i< t Ih., 17!'(); T. coronatus, Ib., 1791 !3 : T. rmi, ;';.:; '. .-. Id., clxrsi, 

 IT'U: /. ' KJW, Ib., 95 9fi; T. "pinosvit, Ib., 1797; 7*. Jjwrrrmw, Ib., 

 179S; T. Moltkia*u$, Ib., 991800; T. Speitylfrimus, Ib., 18012; T. ctsta- 

 nea, M.. .-l\\\ii, 1807, 1814; T. nrm</<//i'<, !'>.. Isll 12; T. smarufMvt, Ib., 

 815 16 ; T. citlGris, Chemn., V. dxxxiv; T. heKdmrs, Bora., XII,93 24. 



