186 MOLLUSCA. 
A form of this genus, also with three bands without vertical streaks, is found in the 
Keys of Florida, see Binney, Land and Freshw. Moll. of N. Am. i. p. 217, fig. 370 
(copied in the Terr. air-breath. Moll. N. Am. v. p. 410, fig. 286, and Manual N. Am. 
Land-Shells, p. 440, fig. 183); this is very probably a variety of O. undatus, Brug. 
The shell figured by some old authors, as Seba, Thesaur. iii. t. 36. figg. 50, 51, and by 
Favanne, 3rd edition of Argenville’s Conchyliologie, t. 65. fig. M2, may also be a 
variety of 0. undatus, Mexico and Central America not having been explored for land- 
shells at the date of publication of these works. 
4, Ortalichus zoniferus. (Tab. X. figg. 12, 13.) 
Orthalicus zoniferus, Strebel, Beitr. Mex. Land- und Sissw.-Conch. v. pp. 28, 29, t. 1. figg. 7a, 
7b, t. 8. fig. 8, t. 11. figg. 7, 7 @ (radula), 8, 9 (anatomy) *. 
Hab. W. Mexico: Chilpancingo and Venta de Zopilote (H. H. Smith), Rancho del 
Platanillo near Iguala (Dona Estefania), Monte Pelegrino, north of Acapulco, in 
a cave (Berendt'), all in the State of Guerrero. 
S.W. Mexico: Oaxaca (Hoge). 
Var. crossei. 
Orthalicus princeps, var. y, Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 455, t. 18. 
fig. 2c’. 
Hab. British Honpuras: Belize (Bocourt and Parsons *). 
Costa Rica (van Patten, in mus. Berol.). 
This species is allied both to O. lividus and O. princeps. Young specimens can 
scarcely be distinguished from O. princeps, the characteristic painting being seen chiefly 
on the last whorl. J have before me two similar shells from Ventanas and Tres Marias 
Islands, North-west Mexico, collected by Forrer; but, as they are worn and bleached, 
I dare not refer them with any confidence to O. zoniferus. 
5. Ortalichus lividus. (Tab. X. figg. 11, 11a.) 
Bulimus zebra, var., Menke, in Zeitschr. fir Malak. vii. p. 168 (1850)’; Pfr. in Martini & Chem- 
nitz, Syst. Conch.-Cab. ed. 2, Bulimus, p. 377, t. 22. fig. 12°. 
Orthalicus lividus, v. Mart. in Monatsb. Akad. Wiss. Berlin, 1863, p. 542°; Malak. Blatt. xii. 
p- 57 (1865) *; Pfr. Monogr. Helic. Vivent. vi. p. 99°; Fisch. & Crosse, Miss. Scient. Mex., 
Mollusca, i. p. 448°; Strebel, Beitr. Mex. Land- und Siissw.-Conch. v. pp. 29-31, t. 1. 
fig. 8, t. 4. fig. 6 (and 9?), t. 11. fig. 18". . 
Hab. W. Mexico: Mazatlan (Melchers + *). 
CentraL Mexico: Province of Michoacan, especially at the Volcan de Jorullo 
(Uhde 2"). 
