126 HELIX-CARACOLUS. 



surface is cut into square granules by the intersection of oblique 

 with spiral impressed lines. 



A specimen measures, alt. 15, diam. 27 mill. 



H. jactata Gundl. (pi. 22, t. 23-25) is the same. 



Var. ROSTRATA Pfr. PL 23, figs. 34, 34a. 



Imperforate, large, not decussated, very acutely carinated ; color 

 yellowish, with a band above and one below, these blackish bands 

 sometimes covering the whole surface. Aperture subhorizontal, 

 transverse, outer margin at the periphery produced into a recurved 

 angular rostration ; peristome white. 

 Alt. 20, diam. 42 mill. 



Eastern Cuba. 



There is a conical elevated variety called by Pfeiffer var. cupulata 

 (pi. 22, figs. 22, 22a). 



The H. pazensis Poey (pi. 23 figs. 32, 32a, 33, 33a) is a form of 

 Var. rostrata. The base is black except a narrow peripheral light 

 brown band ; the upper surface is yellowish, with a broad blackish 

 band in the middle of each whorl, and (usually) a narrow brown 

 line on the carina. A very beautifully painted form of pazensis is 

 shown in figs 10, 11, of pi. 55. The center of the base and a sub- 

 sutural zone are reddish-brown ; the carina is brown, with yellow 

 zones above and below it. The color bands are very bright and 

 sharply defined. 



Var. MARGINELLOIDES d'Orb. PL 23, figs. 26-28. 



Imperforate, rather large, depressed-conoidal acutely carinated ; 

 base deep brown, slightly lighter at periphery and around umbilicus ; 

 upper surface brown, with a blackish zone revolving near the lower 

 margin of each whorl. Peristome white ; its outer margin rounded 

 or angular at position of the periphery. Alt. 17, diam. 37 mill. 



Eastern Cuba. 



The form dalled H. transitoria by Pfeiffer (pi. 23 ; figs. 29, 30, 31, 

 31a) differs in being broadly umbilicated, with smaller aperture ; 

 the ground-color is light yellow, with a broad blackish zone below 

 and one above the periphery. The bands are sometimes absent, but 



