EXOTIC CONCHOLOGY. 27 



Bulla Achatina ; the colour of both is subject to much variation. The spire of five 

 whorls, the last or terminal one very small and flattened, the apex obtuse, the suture 

 depressed as if flattened on the shell, and margined by one or sometimes two 

 indented lines, parallel, and at the top of each whorl. In the colour of its mouth 

 it varies, in sometimes having a tinge of rose colour at the base and top of the spire, 

 but the mouth is usually white. The body-whorl is more or less ventricose, the 

 outer lip is a little reflected, and the whole shell when full grown much thicker and 

 heavier than any of the other species. The epidermis is yellowish brown, beneath 

 which the shell is nearly white, beautifully marked with broad remote stripes of 

 chesnut. Size three inches and a half. Habitat Guinea." 



Our present variety is smaller and more polished, of a pinkish hue, and the 

 stripes darker and more defined. 



Sub-Ge^us— COCHLYCOPA. 



Oblong, body-whorl slender : surface striated : spire variable : outer lip with a prominent 

 lobe near the base. 



C. MACULATA. SPOTTED COCHLYCOPA. 



Plate XXIII. 



Testa ovata, ventricoso-conica, tenui, laevi, diaphana, fulvo-rosea, punctis quadratis, rubro- 

 castaneis, remotis, per lineas transversas dispositis : spira brevi ; columella sinuata : 

 apertura patula : labro acuto. 



Buccinum Stercus Pulicum, Chem. 9. pi. 120. fig. 1026, 7- 



Bulla Stercus Pulicum, Gmel. p. 3654. no. 198. 



Bulimus Priamus, Brug. Die. no. 104. 



Helix Priamus, Ferus. no. 356. pi. 135. fig. 5. 



Bulla Priamus, Dilwyn, p. 493. no. 51. 



Achatina Priamus, Lam. Ans. saus V. 6. p. 131. no. 12. 



Helix Priapus, Gmel. p. 3654. no. 198. Gronov. Zoop. pi. 19. fig. 10, 11. Favanne, 

 pi. 2. fig. 129. Wood's Cat. Bulla, fig. 51. 



This fi-agile and semi-transparent shell is smooth, ventricose, and conically ovate 

 with a short spire, an acute lip and a sinuated pillar. The colour is that of Cinna- 

 mon, ornamented with several horizontal rows of squareish spots of a darker hue. 

 The body-whorl constitutes three-fifths of the whole. Length two inches and a 

 half. Locality (so says Chemnitz) Guinea and the West Indies. 



According to Mr. Beck,* a Danish Naturalist who has bestowed much attention 

 on the study of Conchology, this species, however much in appearance it may re- 



* Substance of a note by Destrayes m his recent edition of Lamarc. 



