102 MOLLUSCA. 
30. Streptostyla dysoni. 
Achatina dysoni, Pfr. P. Z. 8S. 1846, p. 32°; iodbee: Helic. Vivent. jii. p. 270°; Reeve, Conch. 
Icon. vi., Achatina, t. 19. fig. 99 °. 
Spiraxis dysoni (Pfr.), Shuttl. in Bern Mittheil. 1852, p. 208 (Diagn. no. 2, p. 26)‘; Pfr, ae 
Helic. Vivent. iii. p. 476’. 
Glandina dysoni (Pfr.), Morelet, Journ. de Conch. iii. p. 41°; Tate, in Amer. Journ. of Conch. vy. 
p. 158°(1870) *. 7 
Streptostyla dysoni, Pfr. Monogr. Helic. Vivent. vili. p. 343°. 
Hab. Honpuras: under decayed leaves (Dyson 1~* 8). 
CENTRAL NICARAGUA: in the fosse to the Castillo Fort, also in the forest near Toro 
Rapids (Tate). 
Very near the proceming, but much smaller. 
31. Streptostyla vexans. 
Streptostyla vexans, Strebel, Beitr. Mex. Land- und Siissw.-Conch. ii. p. 28, t. 9. fig. 7°. 
Hab. E. Mexico: Jalapa (Strebel 4). 
Resembling S. meridana, var. cobanensis, but considerably smaller. 
32. Streptostyla boyeriana. 
Streptostyla boyeriana, Crosse & Fischer, Journ. de Conch. xvii. p. 82 (1869) *; Fischer & Crosse, 
Miss. Scient. Mex., Mollusca, i. p. 46, t. 1. figg. 9,9a*; Pfr. Monogr. Helic. a vill. 
p. 342°. 
Hab, KH. Mexico: Orizaba (Sallé 1-8). 
More elongated than S. bicontca. 
g. Subturrite. 
33. Streptostyla sargi. 
Streptostyla sargi, Crosse & Fischer, Journ. de Conch. xxiii. p. 225 (1875); Pfr. Monogr. Helic. 
Vivent. viii. p. 343°; Strebel, Beitr. Mex. Land- und Siissw.-Conch. iii. p. 27, t. 9. fig. 4°. 
Hab. N. Guatemata: Coban (Sarg 1-3); Senahu, north side of the Polochic valley, 
2800 feet (Champion). 
The most turreted of all species of Streptostyla. 
34. Streptostyla mohriana. 
Spirazis mohriana, Pfr. in Malak. Blatt. ix. p. 97 (1862) *; Monogr. Helic. Vivent. vi. p. 196°. 
Streptostyla mohriana (Pfr.), Fischer & Crosse, Miss. Scient. Mex., Mollusca, i. p. 65°. 
Hab. E. Mexico: Cerro de Borrego, near Orizaba (Mohr 1), 
