266 MOLLUSCA. 
of a nearly upright oval or pear-shaped form, with the obtuse angle pointing upwards 
(figg. 33, 34), or it is more or less oblique and triangular, the angle pointing outwards 
and the rectilinear upper part of the peristome extending further in a transverse direc- 
tion (fig. 31). A somewhat similar variation is also to be found in other species, when 
sufficient specimens are at hand for examination. ‘The colour is generally dull brownish 
or greyish-red, not glossy, in specimen ¢ only yellowish-white. In the sculpture there 
is not much variation ; several specimens, however, show a few malleate (hammer-like) 
impressions; the interstices are generally nearly twice as broad as the coste (fig. 33). 
A worn specimen found by Mr. W. Lloyd at Culata, near Manzanillo, on the west 
coast of Mexico, probably belongs to this species. 
Cylindrella (Urocoptis) cylindrus, Chemn., from Jamaica, resembles this species 
in general shape and in colour; but has a much more feeble sculpture, a broader 
peristome, and a stronger and distinctly prominent keel at its base. 
91. Eucalodium liebmanni. 
Cylindrella liebmanni, Pfr. Zeitschr. fiir Malak. 1846, p. 159'; in Philippi’s Abbild. neuer Conch. 
iii. p. 5, t. 8. fig. 17; Monogr. Helic. Vivent. ii. p. 870°; Martini & Chemnitz, Syst. 
Conch.-Cab. ed. 2, Cylindrella, p. 4, t. 1. figg. 9, 10*; Sowerby, in Reeve’s Conch. Icon. 
xx., Cylindrella, t. 18. fig. 46 (“ leibmanni’’) °. 
Eucalodium liebmanni, Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 390, t. 15. figg. 19, 
10a, b°. 
Anisospira liebmanni, Strebel, Beitr. Mex. Land- und Siissw.-Conch. iv. p. 79, t. 5. figg. 12, 12a, 
18, and t. 14. figg. 24, B’. 
Cylindrella trocheformis, Sowerby, in Reeve’s Conch. Icon. xx., Cylindrella, t. 9. fig. 80 (young 
state) °. 
Hab. 8.W. Mexico: Barrio and Juchitan, Isthmus of Tehuantepec (Sumichrast * ° 7). 
Mexico (Liebmann 1). 
22. Kucalodium hyalinum. 
Cylindrella hyalina, Pfr. in Philippi’s Abbild. neuer Conch. ii. p. 47, t. 2. fig. 2 (1847) '; Monogr. 
Helic. Vivent. 1. p. 869°; in Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, Cylindrella, 
p. 8, t. 1. figg. 18, 14°; v. Mart. in Malak. Blatt. xii. p. 14 (1865) *; Sowerby, in Reeve’s 
Conch. Icon. xx., Cylindrella, t. 12. fig. 110°. 
Eucalodium hyalinum, Fisch. & Crosse, Miss. Scient, Mex., Mollusca, i. p. 388, t. 15. figg. 9,9 a°. 
Anisospira hyalina, Strebel, Beitr. Mex. Land- und Siissw.-Conch. iv. p. 79, t. 13. fig. 16%. 
Hab. 8. Centra Mexico: Oaxaca, in woods (Deppe # ° *), 
8.4, Mexico: probably Tabasco or Chiapas (Ghiesbreght °). 
