CHONDROPOMA. 4) 
bb. Shell conico-oblong, somewhat pupiform. 
11. Chondropoma largillierti. 
Cyclostoma largillierti, Pfr. in Zeitschr. f. Malak. 1846, p.46'; Martini & Chemnitz, Syst. Conch.- 
Cab. ed. 2, Cyclostoma, no. 125, p. 121, t. 14. figg. 26, 27”. 
Choanopoma largillierti, Gray, List Cycloph. p. 51°. 
Cistula largillierti, Pfr. Monogr. Pneum. Vivent. i. p. 273‘; Gray, Cat. Phaneropn. p. 192°; 
Fischer & Crosse, Miss. Scient. Mex., Mollusca, ii. t. 42. figg. 10, 11 (letterpress not yet 
published) °. . . 
Chondropoma largillierti (Pfr.), Reeve, Conch. Icon. xiv., Chondropoma, t. 11. fig. 86’. 
Var. major, latior, costulis verticalibus minus confertis, peristomate latiore. 
Cyclostoma grateloupi, Pfr. P.Z.S. 1851, p. 246°; Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, 
Cyclostoma, no. 309, p. 306, t. 40. figg. 28-31 °. 
Cistula grateloupi, Pfr. Monogr. Pneum. Vivent. i. p. 272"; Gray, Cat. Phaneropn. p. 191”; 
Strebel, Abhandl. Geb. Naturw. Ver. Hamb. vi. 1, p. 10, t. 1. fig. 4°; Fischer & Crosse, 
Miss. Scient. Mex., Mollusca, ii. t. 42. figg. 8, 9 (letterpress not yet published) ». 
Chondropoma grateloupi, Reeve, Conch. Icon. xiv., Chondropoma, t. 11. fig. 84. 
Hab. Yucatan 359 101114 (Largilliert 1247; mus. Cuming ®); Campeche, in the woods 
(Dr. Berendt!”); Merida in Yucatan, copiously (Hége). 
After examining a large number of specimens I feel convinced that the distinction 
between C. largillierti and C. grateloupi cannot be maintained, many examples being 
intermediate—in one character (size or sculpture or breadth of the aperture) agreeing 
better with Pfeiffer’s description of the former, in others with the latter. 
cc. Shell elongate. 
12. Chondropoma vespertinum. 
Cyclostoma vespertinum, Morelet, Test. Noviss. ii. p. 19°. 
Chondropoma (?) vespertinum, Pfr. Monogr. Pneum. Vivent. i. p. 418°; Gray, Cat. Phaneropn. 
p- 200°. 
Chondropoma vespertinum, Fischer & Crosse, Miss. Scient. Mex., Mollusca, ii. t. 41. fig. 7 (with 
operculum) (letterpress not yet published). 
Hab. S.E. Mexico: ruins of Palenque, in the woods of the province of Chiapas 2 
(Morelet *). | 
13. Chondropoma turritum. 
Cyclostoma turritum, Pfr. P. Z. 8. 1851, p. 248°; Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, 
Cyclostoma, no. 318, p. 310, t. 41. figg. 1, 2”. 
Chondropoma (?) turritum, Pfr. Monogr. Pneum. Vivent. i. p. 289°; Gray, Cat. Phaneropn. 
p. 205 *. 
Chondropoma turritum, Reeve, Conch. Icon. xiv., Chondropoma, t. 7. fig. 52°. 
3* 
