46 MOLLUSCA. 
STREBELIA. 
Strebelia, Crosse & Fischer, Journ. de Conch. xvi. p. 90 (1868). 
Shell cornet-like, paucispiral, subcylindrical, smooth, shining ; aperture large ; inner 
edge of the aperture simple, arcuated; columella thin, not truncate. Animal three 
times the length of the shell, warty, with a median furrow on the back; no labial 
palps. Teeth of the radula pointed, with a blunt prominence at the inner side; middle 
tooth present. 
Only one species. 
1. Strebelia berendti. 
Physella berendti, Pfr. in Malak. Blatt. viii. p. 71, t. 1. figg. 1-4 (1861)*; Berendt, ibid. xii. p. 207°; 
Binney, Land and Freshw. Shells N. Am. ii. p. 73, fig. 118°; Pfr. Monogr. Helic. Vivent. 
v. p. 40%. 
Strebelia berendti, Crosse & Fischer, in Journ. de Conch. xvi. p. 90 (1868)’; Miss. Scient. Mex., 
Mollusca, p. 12, t. 1. figg. 1, la, 6°; Strebel, Beitr. Mex. Land- und Siissw.-Conch. ii. 
p. 3, t. 4. fig. 1’, iii. pp. 5, 9, t. 1. figg. 1-10, t. 2. figg. 1-11 (anatomy) *. 
Hab. E. Mexico: Mirador and Coscomatepec, at the roots of trees (Berendt, Strebel, 
and Sartorius!~7); Pacho near Jalapa, in a wood, beneath rotten leaves and moss 
on the ground (Dota Estefania *); Mexico, without nearer indication of locality 
(Hoge). 
GLANDINA. 
Glandina, Schumacher, Essai N. Syst. p. 202 (1817); Morelet, Journ. de Conch. iii. p. 27 (1852). 
Polyphemus, Montf. 1810 (nec O. Fr. Miller, 1785) ; Cochlicopa, Fér. 1821, part.; Oleacina (Bolten, 
inedit. 1798), Gray, 1847. 
Shell oblong or ovate, more or less fusiform, imperforate, usually with granulate or 
costulated sculpture, which is more distinctly expressed in the upper part of the whorls 
below the suture, with a thin fugacious periostracum (epidermis); mostly unicolorous. 
Aperture elliptico-oblong, much narrower above, the outer margin simple; columella 
arcuated forwards and abruptly truncate below. Living animal elongated in its fore 
part; eye-peduncles ending in a swelling, which is obliquely inflexed and prolonged 
beyond the eyes; rather long labial palps, besides the four feelers. Teeth of the radula 
narrow, spiniform ; a small median tooth. Carnivorous, nocturnal. 
Good figures of the living animal and an account of its anatomy are to be found in 
Fischer & Crosse’s Miss. Scient. Mex., Mollusca, i. pp. 70-82, t. 3. fig. 2a, & t. 2. fig. 12 a; 
and in H. Strebel’s Beitr. z. Kenntniss der Fauna Mexik. Land- und Siisswasser- 
Conchylien, iii. pp. 35-44, t. 10. figg. 8-17, tabb. 11, 13-21, 22. fig. 1. | 
_ The distinction of sections and species is remarkably difficult in this genus, as the 
general shape is somewhat inconstant in the same species, and the characters taken 
