ANOMA. 15 



A typical example from Negril Spots (Jarvis collection) is 

 figured. It is yellowish olive, the first whorl or two blackish- 

 brown; no sutural line. The last whorl has a cream-white, 

 widening band on the keel, spreading upivards to the suture 

 behind a deep brown stripe back of the lip. Above this keel- 

 band there is a narrow brown band, fading on its upper edge; 

 and the base is black-brown. The thin lip is white, both on 

 face and reverse, and the columellar margin is deeply notched 

 at the insertion. The columella is not truncate. The basal 

 keel is long and rather acute. The surface is smooth, showing 

 only faint growth-lines, except on the last third of the last 

 whorl, where there are fine, crowded rib-striae. 



Length 19.5, diam. 5.5 mm. ; whorls 8 l /2- 



Length 18, diam. 5.5 mm. ; whorls 7%. 



6a. Var. SIMPSONI Pilsbry, n. v. PI. 17, figs. 17, 18, 19. 



The shell is clear bluish-white or porcelain-white, with a 

 brown stripe behind the lip and a curved patch on the base. 

 There is no band above the keel, and the apex is white. Aper- 

 ture long, oblique, the outer lip but slightly thickened, and 

 sinuous ; columellar lip deeply notched above. The columella 

 is not truncate below, as seen obliquely in the aperture. The 

 surface is very glossy and only faintly striate, except on the 

 last half whorl, where the striae become stronger, as in typical 

 nitens. The keel is well pinched up near the lip, but becomes 

 almost obsolete a half whorl back. Specimens measure 20 x 

 6.2 mm. to 19 x 5.7 mm., with 7% whorls. 



The habitat of this variety is unknown. Several speci- 

 mens before me vary only in size. It is named for Mr. Charles 

 Torrey Simpson, in recognition of his work on the Jamaican 

 and Porto Rican land snail faunas. 



The absence of stripes on the spire, the longer, more oblique 

 aperture and notched eolumellar lip, separate var. simpsoni 

 from all forms of A. tesselata; the absence of a band above 

 the keel, etc., from A. nitens. 



1. A. PRUNICOLOR (Chitty). 



" This shell is named from the band of deep plum color 



