BRACHYPODELLA, S. STB. 67 



cate, with 8%-10 whorls remaining in a length of 

 9.5-11.5 mm. B. bourguignatiana, no, 22. 



II. South American and Trinidad species. 



1. Diam. 5, length 18 mm.; closely rib-striate; Ecuador. 



B. aequatoria, no. 24. 



2. Slender shells, diam. 2 to 3 mm. ; north coast of South 

 America. 



a. Regularly, rather closely costulate, with 12-14 whorls 

 in truncate, 18-20 in entire shells ; Columbia, Venez- 

 uela. B. hanleyana, no. 25. 



b. Riblets distant, pale; shell slender, 12.5-13.5 mm. 

 long, truncate, with 15 whorls; Venezuela. 



B. leucopleura, no. 26. 



c. Riblets rather wide-spaced; whorls very convex; 9 

 to 15 x 2 to 2.3 mm. with 12-17 whorls in truncate, 

 16.5 to 17.5 mm. with 21 to 25 whorls in entire shells ; 

 Trinidad. B. trinitaria, no. 27. 



19. B. MORINI (Morelet). PL 6, figs. 4, 5, 6, 10. 



Shell cylindric below, the upper half tapering to a narrow 

 truncation or an entire apex, thin, corneous, with whitish rib- 

 lets. Surface lusterless, sculptured with oblique, hardly arc- 

 uate, thread-like riblets, parted by spaces of three or four 

 times their width, and usually 25 to 30 in number on the 

 penult, whorl. Whorls very convex, the last free, projecting 

 forward, swollen at the periphery, strongly carinate below, 

 concave above the keel. Aperture subvertical, rounded-ovate, 

 the outer margin being a little pulled out; peristome thick, 

 white, widely expanded and reflexed. Axis slender, encircled 

 by a single low spiral lamella. 



Length 15, diam. 2.3 mm., whorls remaining 18. 



Length 11.5, diam. 2.3 mm., whorls remaining 15. 



Length 15-16, diam. 2.5 mm., whorls 22-24 (Morelet). 



Guatemala: Vera Paz, in rocky places in forest (Morelet) ; 

 Cahabon ( Sarg) . Southeast Mexico : Mon tanas de Poana and 

 San Juan Bautista, Tabasco (Jose N. Rovirosa). Form pul- 

 cliclla at Livingston, eastern Guatemala, in the Bay of Hon- 

 duras (Stoll) ; form salpinx probably near Coban or Lanquin, 

 in Vera Paz (Salvin) ; form sargi at Cahabon (Sarg). 



