VARICELLA, JAMAICA. 97 



2, p. 25. Achatina unicolor C. B. A., t. c. p. 26. Achatina 

 gayana C. B. A., t. c. no. 7, p. 103 (April, 1850). 



After a careful study of Adams' types of the above species, 

 I do not hesitate to rank them as varieties of a single species. 

 They differ only in slight details of color and striation. 



The two specimens of V. angiostoma in the Adams -collec- 

 tion -are both broken. The best one, which I have drawn 

 (fig. 7), measures 17.7x6 mm. in its broken 'Condition, with 

 61/2 whorls. Though not exactly agreeing with Adams' 

 measurements, I think this is probably the type. It is pale 

 rose colored, with three chestnut streaks on the last, four on 

 the two preceding whorls. There are two smooth apical 

 whorls. There are 6 or 7 flattened striae in a mm. on the last 

 whorl, separated by narrower linear grooves. 



41a. Var. ingallsiana (C. B. Adams). PL 16, figs. 1, 2. 



' * Shell fusiform ; pale brownish, with but four or five dark 

 brown transverse stripes; with very minute rather numer- 

 ous but not crowded transverse striae ; spire with moderately 

 convex outlines ; apex rather small ; whorls seven, moderately 

 convex, with a well impressed finely corded suture ; aperture 

 very long, rather narrow; lip thin, with the edge sharp and 

 curved forwards; columiella moderately produced -and arcu- 

 ate. Mean divergence 36 ; length .75 inch; breadth .25 inch; 

 length of aperture .35 inch." (Adams). 



The single example in coll. Adams is figured. It is a thin, 

 delicate shell, rose-tinted, with inconspicuous pale ochre- 

 chestnut varix-streaks', 5 on the last, 4 on the preceding, 3 

 on the next earlier whorl. It is finely plicatulate, very regu- 

 larly so on the spire and upper part of the last whorl, where 

 there are about 5 striae in a mm. ; but some of the striae drop 

 out, failing to reach the periphery, and the base is smooth 

 around the columellar region. The first 2% whorls are 

 smooth. The outer lip is retracted above, evenly arcuate ex- 

 cept for a minute point projecting at the lower third. The 

 columella is vertical, nearly straight, obliquely truncate at 

 base. 



The following form is probably a mere variation of in- 

 gallsiana, not a true race or subspecies. 



