260 MOLLUSCA. 
Hab. S. Mexico: without nearer indication of locality 1~°. 
Resembles #. ghiesbreghti in the form of the aperture, but more slender, paler in 
colour, and with stronger cost. 
5. Kucalodium decollatum. 
Pupa decollata, Nyst, Bull. Acad. Bruxelles, viii. no. 5, p. 845, cum fig. (1841) *. 
Eucalodium decollatum, Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 363, t. 14. figs. 3,3a’. 
Cylindrella decollata, Pfr. Monogr. Helic. Vivent. vill. p. 421°. 
Hab. 8.E. Mexico: Tabasco (Ghiesbreght 1). 
N. Guatemata: Vera Paz (Morelet ?). 
Distinct by its pale greyish colour and the broad irregularly quadrate aperture. © 
Nyst’s figure, as regards the general outline, is more like EL. ghiesbreghti than that 
of Fischer and Crosse, which represents a smaller and more slender shell. Nyst 
states! that the coste are more pronounced near the sutures, a peculiarity not 
mentioned in Fischer and Crosse’s description, nor visible in their figures. The 
identification therefore remains somewhat doubtful. 
6. Kucalodium compactum. 
Eucalodium compactum, Pilsbry, Proc. Acad. Phil. 1892, p. 338, t. 14. fig. 4’. 
Hab. 8.4. Mexico: Tabasco (Lovirosa'). 
Pale straw-coloured; the visible part of each whorl very low, not half its diameter ; 
basal angle strong ; aperture rather broad, obliquely oval. 
7. Eucalodium mexicanum. 
Cylindrella mexicana (Cuming), Pfr. P. Z. S. 1860, p. 189"; Malak. Blatt. viii. p. 80 (1861) *; 
Monogr. Helic. Vivent. vi. p. 364°. 
Eucalodium mexicanum, Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 869, t. 15. figg. 1, 
la-c*; Strebel, Beitr. Mex. Land- und Stissw.-Conch. iv. p. 62, t. 6. fig. 7, and t. 11. figg. 8 
(radula), 11 (jaw), and 16 (anatom.) ’. 
Hab. 8.E. Mexico: Tabasco (Berendt*®); Chiapas (Bland *). 
Var. major. 
Eucalodium mexicanum, var. y, Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 369 °. 
Hab. N. Guatemata: Alta Vera Paz (Bocourt *); woods between Tactic and Tamahu 
(Sarg °). 
Var. minor. 
Cylindrella mexicana, Pfr, Novit. Conch. iii. p. 435, t. 97. figg. 16, 17 (1869) ”. 
Eucalodium mexicanum, var. 8, Fisch. & Crosse, Miss. Scient. Mex. » Mollusca, i. p. 369°; Strebel, 
Beitr. Land- und Siissw.-Conch. iv. p. 63, t. 5. fig. 11°, 
