92 MOLLUSCA. 
Var. salle. 
Streptostyla sallei, Crosse & Fischer, in Journ. de Conch. xvii. p. 30 (1 869) °; Fischer & Crosse, 
Miss. Scient. Mex., Mollusca, i. p. 36, t. 2. figg. 1, 1a’; Pfr. Monogr. Helic. Vivent. viii. 
p. 3387’; Strebel, Beitr. Mex. Land- und Siissw.-Conch. iii. p. 20, t. 8. fig. 4, & t. 12, fig. 20". 
Hab. E. Mexico: Orizaba (Sallé15-17); Mirador or Orizaba (Strebel '*); Mexico, 
without nearer indication of locality (ex Cuming, in the collection of the late 
Mr. Albers, now in the Berlin Museum !"), 
In vain I have endeavoured to make out clear differences between the Mexican 8. 
sallwi and the Guatemalan S. delattrei. In the descriptions quoted above, and in the 
specimen in the Berlin Museum (which is recognized as S. salla@i by Strebel), I find 
no other characters than a somewhat thinner and less narrow shell, a proportionately 
rather longer spire (aperture to the whole length =5: 8), paler streaks, and a some- 
what thinner columella. But in all these points there is so much variation among the 
Guatemalan specimens of S. delattrei that the peculiarities of S. sal/@i are included 
within their limits. 
7. Streptostyla irrigua. 
Spiraxis irrigua, Shuttl. in Bern Mittheil. 1852, p. 205 (Diagn. no. 2, p. 25)*; Notitiz Malac. 
ed. 2, p. 25, t. 5. fig. 5°; Pfr. Monogr. Helic. Vivent. i. p. 47 °. 
Streptostyla irrigua, Fischer & Crosse, Miss. Scient. Mex., Mollusca, i. p. 37 *. 
Var. cingulata. 
Streptostyla cingulata, Crosse & Fischer, in Journ. de Conch. xvii. p. 31 (1869) °; Fischer & Crosse, 
loc. cit. p. 40, t. 1. figg. 6, 6a°; Pfr. Monogr. Helic. Vivent. viii. p. 338”. 
Hab. E. Mexico: Cordova (Jacot- Guillarmod 1~4) ; Tuxtla, State of Vera Cruz (Sallé 5-1), 
Intermediate between S. delattrei and S. coniformis. A comparison of the figures 
given by Shuttleworth and Fischer and Crosse shows that S. irrigua and S. cingulata 
are probably one and the same species. Fischer and Crosse could not have seen 
Shuttleworth’s figure when they described his species; S. cingulata seems to differ 
only by a somewhat more decided sculpture near the suture. 
8. Streptostyla shuttleworthi. (8. dullacea, Tab. V. fig. 11; probably the 
young state of this species.) 
Spiraxis shuttleworthi, Pir. P. Z. 8. 1856, p. 820, t. 85. fig. 8; Novitat. Conch. i. p. 102, t. 29. 
figg. 1, 2°; Monogr. Helic. Vivent. iv. p. 576°. 
Streptostyla shuttlewortht (Pir.), Fischer & Crosse, Miss. Scient. Mex., Mollusca, i. p. 41, t. 1. 
fgg. 7, 7a, & t. 2. fig. 4°; Strebel, Beitr. Mex. Land- und Siissw.-Conch. iii. pp. 6, 18, 
t.'8.' fie. 9%. 
Hab. Ki. Mexico: Misantla and environs, in the woods, crawling on decayed leaves, 
more rarely on the leaves of shrubs (Strebel>); Cordova (Sallé1~4) ; Orizaba (Sallé*). 
Cuiapas (Ghiesbreght *). 
Tapasco: Teapa (H. H. Smith). 
