258 MOLLUSCA. 
Hab. S.E. Mexico: Chiapas (Ghiesbreght 1~4 ® °). 
N. Guaremata: Vera Paz (Bocourt 78), Coban (Salvin °). 
Distinct by its dark violet colour, feeble sculpture, and comparatively large increase 
in diameter of the lower whorls; a feeble keel at the base of the last whorl; the 
number of remaining whorls in full-grown specimens varying from 9-13. 
In the late Prof. Dunker’s collection, now in the Museum of Berlin, there is a very 
abnormal specimen, having the last whorl not detached at the end from the suture, the 
aperture irregularly circular, measuring 16 millim. in height and as much in breadth 
(diameter), whereas, ordinarily, the breadth of the aperture is distinctly less than its 
height (14 to 17-184 millim.), and the columellar fold nearer the outside than usual. 
The living shell had, no doubt, been fractured when full-grown, and the new aperture 
built somewhat behind the first one. A similar abnormal shell of another species 
has been figured by Sowerby (Reeve’s Conch. Icon. xx., Cylindrella, t. 1. fig. 6). The 
figure 7 in the ‘ Conchologica Iconica’ represents a specimen with an unusually large 
number of preserved whorls, 97 millim. long. 
The locality “‘ Duefias,” quoted by Fischer and Crosse® from Tristram ®, is certainly 
incorrect, the majority of the shells mentioned in that paper having been found in the 
immediate neighbourhood of Coban, according to direct information from Mr. O. Salvin 
himself. 
2. Eucalodium blandianum. 
Eucalodium blandianum, Crosse & Fisch. Journ. de Conch. xvi. p. 276 (1868) *, and xviii. 
p. 22 (1870)*; Miss. Scient. Mex., Mollusca, i. p. 874, t. 14. figg. 5, 5a, and t. 16. 
figg. 11-13 (radula)*; Strebel, Beitr. Mex. Land- und Siissw.-Conch. iv. p. 65, t. 7. 
figg. 2 a-k and 5, t. 14. figg. 10 a, B, t. 11. figg. 4, 5 (radula), t. 11. fig. 12 (jaw), and 
t. 12. fig. 2 (anatomy) *. 
Cylindrella speciosa (Dkr.), Sowerby, in Reeve’s Conch. Icon. xx., Cylindrella, t. 1. fig. 2 (nec 
Pfr.) °. 
Cylindrella blandiana, Pfr. Monogr. Helic. Vivent. viii. p. 186°. 
Hab. E. Mexico: mountains near Orizaba® (Sallé1-8, Bland 1-8, Botteri+); rocky 
country near San Juan, Miahuatlan, between Jalapa and Misantla, on the moist 
ground, between moss and herbs (Dora Estefania‘); Coatepec (Hige). 
Variable in size and form, some specimens being rather broad and full and others 
comparatively slender and narrow; for extreme dimensions, see above, p. 206. 
Characterized by the yellowish-brown rather glossy colour, the comparatively strong 
coste, which are somewhat paler than the interstices, and the malleated (hammer-like) 
impressions scattered here and there between the coste or in place of them. The 
interstices mostly twice as wide as the coste. The transverse strie in the interstices 
very feeble and irregular. Scattered darker brown streaks, marking periods of growth, 
