MOLLUSCA. 615 
Streptostyla labida (p. 96). 
Streptostyla labida, Biolley, Mol. terr. y fluv. de Costa Rica, p. 7°. 
To the locality given, add :— 
Hab. Centra Costa Rica: Slope of the Volcan de Barba, at an elevation of 1600 
metres (Biolley ®), | 
Streptostyla lurida (p. 96). 
To the localities given, add :-— 
Hab. N.E. Costa Rica: San Miguel (Biolley). 
15 (a). Streptostyla chiriquiana, n. n. 
Streptostylus flavescens, 8.1. Da Costa, Proc. Malac. Soc. London, iv. p. 66, t. 7. fig. 1 (1900) 
(nec Shuttl., 1852) *. 
Swollen, yellowish. yrwefva r9r7 4.730 
Long, 22, diam. 11, apert. 11 millim. 
Hab. N. Panama: Chiriquil. 
15 (3). Streptostyla nebulosa. 
Streptostyla nebulosa, Dall, Proc. U.S. Nat. Mus. xix. p. 364, t. 33. fig. 4 (1896) *. 
Near S. lurida (bocourti), but of more oval form, less pointed, and with a less elevated spire. 
Long. 22, diam. 10 millim. 
Hab. S.E. Mexico: San Cristobal, Chiapas (E. W. Nelson 1). 
Streptostyla delibuta (p. 97). 
Streptostyla delibuta, Biolley, Mol. terr. y fluv. de Costa Rica, p. 7 **. 
Hab. Centrat Costa Rica: Slope of the Volcan de Irazu and of the Volcan de Barba, 
1500 to 2000 metres, Tarbaca and Azahar de Cartago *’, 1500 to 1700 metres, and 
El Roble, between the Volcan de Irazu and Turrialba, 1700 metres (Biolley). 
Var. crassa (p. 97). 
To the localities given, add =o 
Hab. Cenrrat Costa Rica: La Palma (Biolley). 
Streptostyla ventricosula (p. 97). | 
Streptostyla ventricosula, Biolley, Mol. terr. y fluv. de Costa Rica, p. 7°. 
“s 
To the localities given, add :— . 
Hab. [Cenrrat Costa Rica :] La Palma (Biolley °: var. major). 
The commonest species of the genus in Central Costa Rica. 
