ARCHACHATINA. 115 



a space of over 120 leagues. It is eaten by the blacks but was 

 not found palatable by Rang. The eggs are yellow and 

 quite large, the uterus containing four or five. 



Mr. Ancey proposes to separate a form found around 

 Monrovia, Liberia, from A. purpurea, under the new name 

 A. viridescens. It is described as smaller than purpurea, 

 more granulose, the last whorl not so high and especially not 

 so much swollen; the aperture is smaller, the peristome less 

 expanded, margined generally with a band of darker color, 

 the interior more purple, the cuticle constantly of a glaucous 

 green. (Bull. Soc. Malac. France v, p. 69, footnote no. 1. 

 1888). No figure, dimensions, or further information have 

 been published. 



8. A. PORPHYROSTOMA ( Shuttleworth) . 



Shell ovate-oblong, rather solid, striate and closely decussate 

 with spiral lines ; olivaceous, marbled with brown streaks and 

 spots. Spire ovate-conoid, obtuse, purple-rose. Whorls 6, 

 a little convex, the last slightly inflated, three-fifths the length ;. 

 suture with an impressed margination, crenulate. Columella 

 arcuate, purple, the base obliquely truncate. Aperture med- 

 ium sized, semioval, lilac within. Peristome acute, simple,, 

 the margins joined by a very thin, glossy purplish callous, 

 which spreads inwards. Length 60, diam. 32, apert. 32 x 20 

 mm. (Shuttl.). 



West coast of Africa (Cuming). 



Achatina porphyrostoma SHUTTL., Mittheilungen der natur- 

 forschenden Gesellschaft in Bern aus dem Jahre 1852, p. 201. 

 PFR., Monogr. iii, p. 483. 



Described from three similar specimens but not yet figured. 



9. A. RHODOSTOMA (Philippi) . PL 22, fig. 11. 



Shell oblong-conic, rather thick, striate, whitish under a 

 tawny-buff cuticle, ornamented with close, straight rufous 

 longitudinal streaks; spire conic, a little obtuse; suture little 

 crenulated, hardly margined; whorls 6%, a little convex, the 

 upper ones delicately decussate-granulate, the lower very 

 smooth, last whorl longer than the spire. Columella very 



