STREPTOSTYLA. 91 
N. Guatemata: Coban (Sarg 5). 
Costa Rica (Rogers, var.); Rancho Redondo, 1600 metres above the sea (P. Biolley : 
var. ). 
Very near the preceding, but smaller and comparatively more narrow, the spire 
longer; generally the dark colour is more uniform, less interrupted by yellow streaks. 
In some specimens the yellow zone at the suture is wanting; in others it is propor- 
tionately as well developed as in S. nigricans. 
b. Oliveformes. 
6. Streptostyla delattrei. 
Achatina lattrei, Pfr. P. Z. S. 1845, p. 188°; Monogr. Helic. Vivent. ii. p. 269 2; Reeve, Conch. 
Icon. vi., Achatina, t. 14. fig. 53°. 
Glandina lattrei, Morelet, Journ. de Conch. iii. p. 40‘. 
Spiraxis (Streptostyla) lattrei, Shuttl. in Bern Mittheil. 1852, p. 205 (Diagn. no. 2, p. 25) °. 
Spiraxis lattrei, Tristram, P. Z. S. 1861, p. 280°. 
Streptostyla delattret, Fischer & Crosse, Miss. Scient. Mex., Mollusca, i. p. 33, t. 1. figg. 5, 5a, 67; 
v. Mart. P. Z. 8S. 1875, p. 648°; Strebel, Beitr. Mex. Land- und Siissw.-Conch. iii. p. 21, 
t. 8. figg. 10, 10 a—-c, & t. 12. fig. 10°. 
Glandina oliva, Morelet, Test. Noviss. i. p. 13 (1849) ”°. 
Hab. N. Guatemata: Vera Paz, in the woods (Morelet7%1°); Panzos, Vera Paz 
(Bocourt 7 9); Coban (Salvin ®®, Bocourt", Sarg ®); Senahu 2800 feet and Panzos, 
both in the Polochic valley (Champion); Alta Vera Paz (Boucard). 
E. GuaTEMALA: Yzabal, on the borders of the Golfo Dulce (Séo//). 
Somewhat variable in size, form, and colour. The longitudinal streaks are often 
dark chestnut, but sometimes very faint and scarcely indicated, sometimes solitary and 
sometimes two close together; generally they are fewer and more faint on the second 
half of the last whorl. The aperture occupies rather more or less than two thirds of 
the whole length of the shell. 
Var. edwardsiana. 
Streptostyla edwardsiana, Crosse & Fischer, in Journ. de Conch. xvii. p. 29 (1869); Fischer & 
Crosse, Miss. Scient. Mex., Mollusca, i. p. 35, t. 2. figg. 2,2 a'*; Pfr. Monogr. Helic. Vivent. 
viii. p. 338°; Strebel, Beitr. Mex. Land- und Siissw.-Conch. iii. p. 20”. 
Hab. E. Mexico: Orizaba (Sallé 11-14). 
Only distinguished by the suture being marked with an impressed line, which in 
other genera is a good specific character; but, as in other respects no real difference 
is to be found, I agree with Strebel that it may be accidental. Strebel figures, how- 
ever, as probably belonging to S. edwardsiana, young specimens (t. 8. fig. 7), which 
have neither the “sutura marginata” nor the dark streaks of Crosse and Fischer’s 
species. 
12* 
