208 



Allied to />'. interstinctus, from the same region, but much smaller, 

 shorter in proportion, and ratlin- remarkable for the mottling of 

 colors, which causes it to look as it' mouldy. 



Bclimus enfracincttjs. T. elongata, ovato-conica, vix per- 

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

 acuta, anfr. r> coavexiusculis, ultimo subangulato :'; long, testa' ade- 

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

 cuhl, hand appressa. 



Long. I ; lat. | poll. I lab. 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 /!. rn uricus, meridiona- 

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

 tinguished, except by this peculiarity. Both bauds are often 

 wanting. 



AcHATINA VENTRICOSA. T. magna, solida, conieo-ovatfi. ex eor- 

 neo virescente, longitrorsum obscure flammulata, granoso-reticulata ; 

 spira conica, anfr. tJi convexis, ultimo ventricoso, obtuse carinato ; 

 Mitur.i sulicrenulata ; apertura rotundato-ovata | long, testa' 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. Ilab. 

 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 llamniiilated, 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 ualteata. T. tenui, laevi, ovato-eonica, tcnuissime 

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

 cincta : spira conica, apice mammillata, anf. 7 convexis supernis sub- 

 granulosis, ultimo angulato; apertura ?■ long, testa', lunata; columella 

 subrecta, tenui, niodice 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 hand, which is in itself enough to distinguish it, as 

 well as the delicate revolving threads, resemble the hydrophanous 

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

 disappear on being wet. [*y-i- • '• Gouldi Rv.] 



Aciiati.na [subgen. Electra] paritura. T. elongata, tenui. 



