116 HEMffiULIMUS. 



and figure, the sculpture is not so strong as in the following 

 form; yet it must he remembered that the sculpture is usu- 

 ally minimized in Reeve's figures of Achatina. 



H. D. CARUS Pils., n. var. PL 40, figs. 2, 3, 4, 6. 



The shell is elliptic-ovate with a rather slender spire and 

 obtuse apex; solid and strong. Nearly 2% smooth, convex 

 whorls form the semiglobose embryonic shell. The next whorl 

 is lightly striate, near its termination the surface becomes 

 minutely plicate and spiral grooves appear ; on the next whorl 

 it is closely and finely plicate, the plicaB cut by several (usually 

 5 to 7) spiral furrows, which appear as if scratched in a 

 plastic surface. On the last whorl the fine plica become 

 weaker, irregular, often more or less obsolete towards the end 

 of the whorl; there is more or less indistinct malleation, and 

 some irregularity due to former growth-arrest periods, marked 

 by dusky streaks, of which there may be one to four or more 

 on the last whorl. The aperture is elliptic-pointed, outer lip 

 obtuse, more or less thickened, expanded or effuse towards the 

 base. Columella arched, usually very deeply, but sometimes 

 only moderately, its lower portion colored like the outer lip; 

 base truncate, parietal callus glossy Hack, overlaid with blu- 

 ish inwardly. Color as follows : 



(1) Ground-tint yellow, fading towards the apex: (a) 

 brown spots below the suture appearing on the first post- 

 embryonic whorl, becoming broad, more or less fulgurate 

 stripes on the penult, and next earlier whorls; last whorl 

 showing three narrow equidistant bands and an irregular 

 mottling of the yellow ground, elsewhere olive and brown of 

 varying shades; outer lip and lower half of columella edged 

 with vermilion. (6) intermediate whorls of the spire marked 

 with narrow, close, wavy brown streaks; antepenult, whorl 

 with some subsutural spots, last whorl without bands, irregu- 

 larly streaked with dull green on a greenish yellow or light 

 yellow green ground; outer lip and basal half of columella 

 bright ochre. 



(2) Ground-tint reddish, (c) nearly uniform ochraceous 

 reddish, the red predominating on the earlier whorls; outer 



