408 



extended from the pillar over about a fourth part of the shell, 

 leaving the epidermis of the back uncoated. In full grown speci- 

 mens the spire and apex are entirely concealed, and the upper 

 border of the body whorl, winch is carinated and somewhat re- 

 flexed, overhangs both, so as to form an open, somewhat round 

 concavity. The pillar is four-plaited. 



"In younger individuals (Pig. 17.) and especially in those lately 

 produced, the shell is thin, of a brownish red mottled with white, 

 and the rude apex of the spire appears entirely uncovered. 



" From Africa, near the shore 



2. Cymba Tritonis (pi. lxxix. f. 8. lxxx. f. 25.) Brod. Sp. 

 Conch. 



"C. testa ovato-tumida, elougata, pallente, anfractus basalis 

 limbo apicem rotundum supereminente subreflexo ; columella tri- 

 plicata. 



" Shell ovate, tumid, elongated, pale-brown or whitish, covered 

 with a brownish epidermis, over which an enamel-like glaze ex- 

 tends from the pillar about as far as it does in Cymba Neptuni. 

 The rounded apex of the spire in full grown individuals is very 

 nearly concealed, and is over-hung by the border of the spire and 

 body-whorl, so as to present the appearance of a shallow winding 

 excavation, (at the bottom of which the tip of the apex may be dis- 

 cerned,) differing entirely in character from that which is observed 

 in Cymba Neptimi, the aperture is much less patulous ; and the 

 whole shell is more symmetrical and melon-shaped". 



From Africa. 



3. Cymba patula (pi. lxxix. f. 7.) Brod. Sp. Conch. 



"C. testa tumida, labium versus gibba, brunneo-rubente, anfractus 

 basalis limbo excavato subreflexo, apicem subrotundum exsertum 

 vix prsetereunte ; columella 4-plicata ; apertura valde patula. 



" Shell tumid, gibbous towards the outer lip, brownish red, 

 covered with a brownish epidermis, partially coated, as in the last 

 species, with an enamel-like glaze. The spire is excavated and 

 open, the rounded apex partly apparent, and the upper border of 

 the body-whorl carinated, and somewhat reflected. The pillar, 

 which has four plaits, is straighter than that of Cymba Neptimi and 

 Cipnba Tritonis, and the aperture from the gibbous extension of 

 the outer lip is very wide. The shells of all the individuals of this 

 species seen by the author, have the appearance of being full-grown, 

 and are very much inferior in size to the two species last described 



From the African Ocean, near the shores. 



