M E L A N I A . 



Plate XVIII. 



Species 12G. (Fig. a and b, Mus. Cuming.) 



Melania l.-evissima. Mel. testa pyramidali-oblongd, so- 

 ma, crassd, Imvi, ad basin oblique ventricosd, ceeru- 

 ite-cinered, purpun o c trie strigatd, epidermide 

 tenui olivaced partim indutd, anfractibus novem ad 

 i, declivi-convexis ; aperturd ovatd, columella su- 

 perne callosd, in/erne calloso-reflexa. 



The veky smooth Melania. Shell pyramidally ob- 

 long, very solid, thick, smooth, obliquely ventricose 

 at the base, bluish-ash, variously streaked with purple, 

 partially covered with a thiu olive epidermis, whorls 

 nine to ten, slopingly convex ; aperture ovate, colu- 

 mella callous at the upper part, callously reflected at 

 the lower. 



Sowerby, Zool. Journ. vol. i. p. GO. pi. 5. f. 5. 

 Packycldlus lavissimus, Lea. 



Hah. Chiapa, Mexico. 



A species of solid growth, thick, and somewdiat ob- 

 liquely ventricose or gibbous at the base, well characte- 

 rized by a diffuse painting of purple streaks on a bluish- 

 ash ground. It may be regarded as the type of a good 

 sectional division, forming Mr. Lea's genus PachycJdlus. 



Species 127. (Mus. Cuming.) 



Melania Largillierti. Mel. testd subulato-turriid, 

 solidd, laevigata, olivaced, purpureo-fusco obscure stri- 

 gald, anfractihus novem ad decern, subrotundatis, sub 

 lente minutissime decussatim striatis; aperturd ovatd, 

 parviusculd, columella inferne calloso-reflexa. 



Largilliert's Melania. Shell subulately turreted, solid, 

 smooth, olive, obscurely streaked with purple-brown, 

 whorls nine to ten, somewhat rounded, beneath the 

 lens very minutely decussately striated ; aperture 

 ovate, rather small, columella callously reflected at 

 the lower part. 



Philippi, Abbild. uud Besch. Conch, vol. i. p. 62. pi. 2. 

 f. 10. 



Hah. Guatemala; Skinner. 



Chiefly distinguished by the roundness of the whorls, 



and by their more turreted plan of convolution. 



Species 128. (Mus. Cuming.) 

 Melania Pirenoides. Mel. testd pyramidali-subulatd, 



acuta, laevigata, solidd, fusco-olivaced, anfractihus duo- 

 decim ad tredecim, declivi-planatis, suluris subimpressis, 

 aperturd parvd, columella callosd, subexcavatd, ail basin 

 sublacunatd. 



The Pirena-like Melania. Shell pyramidally subu- 

 late, sharp, smooth, solid, brownish-olive, whorls 

 twelve to thirteen, slopingly flattened, sutures rather 

 impressed ; aperture small, columella callous, some- 

 what excavated, slightly channelled at the base. 



Hub. Fernando Po ; Fraser. 



A species partaking curiously of the characteristics of 

 the Pirena, PachycJdlus, and J 'ibex divisions of the family. 

 With the compact pyramidal coiling of the first, it has the 

 smoothness and colouring of the second, and the colu- 

 mellar basal channelling of the third. 



Species 129. (Mus. Cuming.) 



Melania Mexican a. Mel. testd ovatd, ad basin subgih- 

 bosd et oblique productd, solidiusculd, olivaceo-nigrd, 

 anfractihus paueis, longitudinaliter subirregulariter pli- 

 cato-striatis, suluris subimpressis; aperturd oblongo- 

 ovatd, columella excavatd, labro columellari calloso- 

 reflexo. 



The Mexican Melania. Shell ovate, somewhat gib- 

 bous and obliquely produced at the base, rather solid, 

 olive-black, whorls few, longitudinally somewdiat ir- 

 regularly plicately striated, sutures rather impressed; 

 aperture oblong-ovate, columella excavated, columel- 

 lar lip callously reflected. 



Hah. Mexico. 



A short, bold species, produced at the base, but not pos- 

 sessing the characteristic features of the PachycJdlus divi- 

 sion exemplified by M. lavissima. 



Species 130. (Mus. Cuming.) 



Melania baculus. Mel. testd subulatd, versus basin 

 obesd, lavigatd, olivaceo-nigrd, anfractihus septem ad 

 oclo, siijienie late eoncavo-impressis, delude <•» 

 aperturd ovatd, ad basin sublruncald, columella callo- 

 so-e.vcavatd. 



The club Melania. Shell subulate, stout towards the 

 base, smooth, olive-black, whorls seven to eight, 

 broadly concavely impressed round the upper part, 



January, 1800. 



