ANOMA. 35 



hind the lip ; coarsely striated near the end of the last whorl, 

 otherwise with the striae of the lower half of the shell most 

 lightly impressed." C. m. var. corpulenta C. B. A., Contrib. 

 no. 9, p. 165). 



Inhabits St. Elizabeth (Adams). I have not seen speci- 

 mens of this race. 



19e. Var. unicolor C. B. Ad. 



" Shell of medium size and form; pale yellow or pearl- 

 white, with a white lip; strongly striated on the back of the 

 last whorl, finely striated on the middle whorls." (Cyl. m. 

 var. unicolor C. B. A., Contrib. no. 9, p. 165.) 



Porus, in the east part of Manchester (Adams). Known 

 to me by the above description only. 



Chitty, in his Contrib. no. 1, p. 10, thus defines a sub- 

 variety : a. * * It is less shining, the striae are coarser ; it is less 

 robust, and it seems less liable to decollation. Out of three 

 specimens, all I have, two have apparently lost only the very 

 apices, having 13% whorls remaining, and the third has 10% 

 whorls left. Near Maroon Town, St. James." 



Still another variety of solida from Porus, in eastern Man- 

 chester, is glossy, sculptured like solida, but rather smoother, 

 dark at the ends, but apparently without a subsutural white 

 band. The specimens are not sufficiently fresh for exact de- 

 scription. 



19/. Subsp. STRIATULA (C. B. Adams) , PL 16, figs. 36, 37, 

 38, 39. 



" Shell thick, short, robust; pale greenish yellow, some- 

 times with a tinge of pale brown or horn color; lip white, 

 thick and well expanded; with fine, regular, approximate 

 striae, which are obsolete only at the summit " (C. B. Ad.). 



Stouter in figure than solida and valida, usually suffused 

 with reddish-brown on the last whorl, the suture whitish ; "keel 

 delicate, narrow and low throughout; very closely, finely and 

 evenly rib-striate, the striae not coarser on the last whorl; be- 

 coming weaker on the first whorl or two. Aperture some- 

 what oblique, livid brown inside; peristome white and thick- 



