310 MOLLUSCA. 
7. Spiraxis similaris. 
Volutaxis similaris, Strebel, Beitr. Mex. Land- und Siissw.-Conch. v. p. 122, t. 7. fig. 11, t, 17. 
fig. 18 (1882) °. 
Hab. E. Mexico: woods of Pacho near Jalapa (Estefania Salas 1). 
8. Spiraxis confertecostatus. 
Volutaxis confertecostatus, Strebel, Beitr. Mex. Land- und Siissw.-Conch. v. p. 122, t. 7. fig. 12, 
t. 17. fig. 19 (1882)}, 
Hab. E. Mexico: Pacho and Dos Arroyos near Jalapa (Estefania Salas '). 
9. Spiraxis intermedius. 
Volutaxis intermedius, Strebel, Beitr. Mex. Land- und Siissw.-Conch. v. p. 123, t. 17. figg. 22, 34 
(1882) *. 
Hab. E. Mexico: Pacho near Jalapa (Strebel 1). 
10. Spiraxis confertestriatus. 
Volutaxis confertestriatus, Strebel, Beitr. Mex. Land- und Siissw.-Conch. v. p. 123, t. 17. figg. 21, 
33 (1882) 1. | 
Hab. E. Mexico: Mirador (Strebel 1). 
11. Spiraxis nitidus. 
Volutaxis nitidus, Strebel, Beitr. Mex. Land- und Siissw.-Conch. v. p. 123, t. 7. fig. 9, t. 17. 
fig. 25, 36 (1882)*. 
Hab. E, Muxico: Pacho and Mirador (S¢rebel 3). 
Var. major,n. (Tab. XVIII. fig. 1.) 
Long. 10-113 millim., diam. 23; apert. 2 long and 1 broad; 9-10 whorls. 
Hab. K. Mexico: Las Vigas (Hége). 
From the form of the aperture it is probable that our figured specimen is not quite 
full-grown, although of considerably larger size than indicated by Strebel. 
Var. minor, n. 
Volutaxis nitidus, form B, Strebel, loc. cit. p. 124, t. 7. fig. 18, t. 17. fig. 20°. 
Hab. i. Mexico: Pacho, Camino de Obispo, and Mirador (Strebel 2). 
Var. pittieri, n. (Tab. XVIIL. fig. 2.) 
Magis elongatus, levis; anfr. 10, apice globoso, perobtuso. 
Long. 10, diam. 2; apert. long. 15, diam. 1} millim. 
Hab. S.W. Costa Rica: El Pital, at an elevation of 250 metres above the sea, in the 
valley of Naranjo, and Savana de Guacimo, at a similar elevation, in the valley of 
the Rio Brus (Pittier). 
