208 



Allied to B. inter sfinctus, from the same region, but much smaller, 

 shorter in proportion, and rather remarkable for the mottling of 

 colors, which causes it to look as if mouldy. 



Bulimus infracinctus. T. elongatii, ovato-conica, vix per- 

 forata, tenui, straminea, fasciis duabus badiis basalibus cincta ; spira 

 acuta, anfr. 6 convexiusculis, ultimo subangulato f long, testa? ade- 

 quante ; apertura ampla, obovata ; labro acuto ; columella renexius- 

 cula, baud appressa. 



Long. -| ; lat. f poll. Hab. Taboo and Fishtown, Liberia. Dr. 

 Perkins. 



From several similar African shells, this differs in having but two 

 bands, the posterior one fairly entering the aperture so as not to 

 appear at the suture on the other whorls as in B. neuricus, meridiona- 

 lis, and Bengalensis, from the latter of which it can scarcely be dis- 

 tinguished, except by this peculiarity. Both bands are often 

 wanting. 



Achatina ventricosa. T. magna, solida, conico-ovata, ex cor- 

 neo virescente, longitrorsum obscure flammulata, granoso-reticulata ; 

 spira conica, anfr. 6£ convexis, ultimo ventricoso, obtuse carinato ; 

 sutura subcrenulata ; apertura rotundato-ovata |- long, testas ade- 

 quante ; labro everso intus incrassato, submargine et columella nitide 

 purpureis ; columella valde arcuata. 



Long. 5; lat. 3£ poll.; apertura? long. 3; lat. 1| poll. Hab. 

 Liberia. 



Closely allied to A. purpurea, but the form is constantly more ven- 

 tricose, and by comparing an extensive series, including the young, 

 the difference is plainly not accidental. The color is more mixed 

 with green and less conspicuously flammulated, and often flecked with 

 triangular pale spots, and the aperture more of a blood red. Dr. 

 Perkins says it is only found in the interior, while A. purpurea is 

 found near the sea. 



Achatina balteata. T. tenui, laevi, ovato-conica, tenuissime 

 striata, vinosa argenteo-lineolata et fascia sub-basali argentea semper 

 cincta ; spira conica, apice inammillata, anf. 7 convexis supernis sub- 

 granulosis, ultimo angulato ; apertura \ long, testa?, lunata ; columella 

 subrecta, tenui, modice truncata, alba rufo marginata. 



Long. 1| ; lat. \ poll. Hab. Liberia. Dr. Perkins. 



A very peculiar shell, both in its conical form and in its marking. 

 The broad silvery band, which is in itself enough to distinguish it, as 

 well as the delicate revolving threads, resemble the hydrophanous 

 bands, on the Bulimi from the Philiiipine Islands, but they do not 

 disappear on being wet. [Syn. A. Gouldi Ilv.] 



Achatina [subgen. Electra] paritura. T. elongata, tenui, 



