284 MOLLUSCA. 
16. Holospira subtilis. 
Cylindrella subtilis, Morelet, Test. Noviss. i. p. 11 (1849)*; Pfr. Monogr. Helic. Vivent. il. p.577°; 
Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, Cylindrella, p. 56, t. 5. figg. 38-385°; Fisch. 
& Crosse, Miss. Scient. Mex., Mollusca, i. p. 418, t. 17. figg. 18, 13a,5°; Sowerby, in 
Reeve’s Conch. Icon. xx., Cylindrella, t. 14. fig. 125°. 
Hab. N. Guatemata: forests of Peten (Morelet 1°). 
17. Holospira swiftiana. 
Cylindrella swiftiana, Crosse, Journ. de Conch. xi. p. 388 (1868) *, and xv. p. 200, t. 5. fig. 5°; 
Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 407, t. 17. figg. 14, 14a,6°; Pfr 
Monogr. Helic. Vivent. vi. p. 370%. 
Hab. * Mexico !~4., 
18. Holospira spelunce. 
Cylindrella costulata, Morelet, Test. Noviss. ii. p. 12 (1851) * (nec C. B. Adams, 1849). 
Cylindrella spelunce, Pfr. Zeitschr. fiir Malak. ix. p. 151 (1852)°*; Monogr. Helic. Vivent. ii. 
p- 577°; Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 410, t. 17. figg. 11, lla, 6%. 
Hab. N. GuateMaa: on the walls of the cave Jobitsinal, near the capital of Peten 
(Morelet -*). 
19. Holospira polygyra. 
Cylindrella polygra, Pfr. P. Z. S. 1856, p. 322, t. 35. figg. 2,3°; in Martini & Chemnitz, Syst. 
Conch.-Cab. ed. 2, Cylindrella, p. 31, t. 8. figg. 6-8°*; Monogr. Helic. Vivent. iv. p. 604°; 
Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 405, t. 17. figg. 16, 16 a-c*; Sowerby, 
in Reeve’s Conch. Icon. xx., Cylindrella, t. 7. fig. 5 (somewhat magnified) °. 
Epirobia polygyra, Strebel, Beitr. Mex. Land- und Siissw.-Conch. iv. p. 87, t. 5. figg. 7 a, 6, t. 18. 
fig. 2 (radula), t. 14. fig. 14 (columellar axis) °. 
Hab. E. Mexico: Cordova (Sallé }~®). 
The columellar axis is particularly swollen in the lower part within each whorl, and 
here rather granulose, in the upper part vertically costate (Fischer & Crosse +, Strebel ®). 
20. Holospira polygyrella. (Tab. XVII. figg. 1, 1a, 8.) 
Cylindrella polygyra, v. Mart. P. Z. 8. 1863, p. 411°. 
Cylindrella polygyrella, v. Mart. Jahrb. d. malak. Ges. iii. p. 261, t. 9. fig. 8 (1876) *; Pfr. Monogr. 
Helic. Vivent. viii. p. 622 °. 
Cylindrella morini, Strebel, Beitr. Mex. Land- und Siissw.-Conch. iv. p. 87, t. 5. fig. 3, t. 13. fig. 4 
(radula), t. 14. figg. 15 a, B, c* (nec Morelet). 
Hab. N. Guatemata: Coban, Vera Paz, copiously (Salvin1-3; Sarg; coll. Dunker+; 
Conradt, in Mus. Berol.). 
Distinct from the preceding by its smaller size (length 14, in one specimen 
