UROCOPTIS OF HAITI. 149 



a. Shell dull, sculptured with very fine waved or 

 interrupted striae, with a series of pits above the 

 suture. 



1. Basal keel very strongly projecting; peri- 

 stome hardly expanded. 



Archegocoptis eximia. 



2. Basal keel moderate, cord-like; peristome 

 well expanded. Archegocoptis crenata. 



&. Shell widely truncate, glossy, striatulate, the mid- 

 dle whorls with a band. 30 x 11 mm., whorls 6. 



U. truncata, no. 30. 



c. Surface punctate, the earlier and last whorls 

 striate. 



1. Peristome adnate above; diam. about one- 

 third the length; whorls ?i/ 2 to 9. 14-15 x 

 5-51/2 mm., U. adamsiana, no. 26 ; 18-20 x 

 6-61/2 mm., U. a. puncturata. 



2. Peristome free; diam. less than one-third the 

 length; no distinct accessory basal lamella. 

 28-31 x 8 mm., whorls 9-10. 



U. malleata, no. 27. 



d. Surface glossy, almost smooth or closely, finely 

 striate ; white with corneous or brown stripes. 



1. Diam. one-third the length or less; suture 

 crenate only weakly and on the cone; axis 

 strongly twisted; peristome adnate above. 

 25-28 x 8 mm. U. flammulata, no. 28." 



2. Diam. exceeding one-third the length; finely 

 striate; axis nearly straight; peristome free 

 or shortly adherent above. 30-32 x 10y 2 -ll% 

 mm. U. menkeana, no. 29. 



e. Surface sharply sculptured with arcuate thread- 

 like striae, the suture conspicuously crenate; diam. 

 about one-third the length. U. monilifera, no. 23 ; 

 U. klatteana, no. 25 ; U. rudis, no. 24. 



23. U. MONILIFERA (Pfeiffer) . PI. 40, figs. 49-54. 



Shell fusiform or somewhat cylindric, usually widest above 





