MOLLUSCA. 629 
Hab. 8.W. Costa Rica: Quebrada Chenarria, Golfito, and banks of the Rio Coto, both 
near the Golfo Dulce (Pittier). 
: ORTALICHUS (p. 179). 
Ortalichus princeps (p. 182). 
Orthalicus princeps, Rolle, Nachrichtsbl. deutsch. malak. Ges. 1895, p. 131. 
Ortalichus princeps, Biolley, Mol. terr. y fluv. de Costa Rica, p. 11”. 
Oxystyla princeps, Pilsbry, Nautilus, xiii. p. 189 (1900) ”. 
Lo the localities given, add :— 
Hab. S.W. Mexico: Colima (Rolle 18). 
S.E. Mexico: State of Tabasco (Rovirosa 20). 
N.E. Costa Rica: Region of the Sarapiqui, 100-200 metres (Biolley 9). 
K. Costa Rica: Santa Clara (Biolley 1°). 
S.W. Cosra Rica: Rio Grande de Terraba, in the virgin forests, and Alto de Mano 
Tigre, 690 metres (Pittier). 
S. Panama: Bugaba (Champion). 
These additional localities show more completely the distribution of this species, 
from Mazatlan and Misantla to Panama. 
Var. elegans. (Tab. XLIV. fig. 15.) 
Orthalicus elegans, Rolle, loc. cit. p. 181”. 
Hab. 8.W. Mexico: Colima (Rolle 21). 
This is only an attenuated variety of O. princeps; I give a figure from Rolle’s 
specimen, now in the Berlin Museum. 
Ortalichus tricinctus (p. 185). 
To the localities given, add :— 
Hab. {[Centrat Nicaragua :| Managua (Rothschuh, in Mus. Berol.). 
Ortalichus zoniferus (p. 186). 
Orthalicus zoniferus, Rolle, Nachrichtsbl. deutsch. malak. Ges. 1895, p. 131°; Fischer & Crosse, 
Miss. Scient. Mex., Moll. ii. p. 666, t. 72. figg. 7, 7 a*. 
To the localities given, add :-— | 
Hab. [S.W. Mexico :] Colima (folle *). 
Var. nobilis. (Tab. XLIV. fig. 16.) 
Orthalicus nobilis, Rolle, loc. cit. p. 131°. 
Hab. S.W. Mexico: Colima (Rolle ®). 
An attenuated variety of O. zoniferus, corresponding to the var. elegans of O. princeps. 
I figure Rolle’s specimen, now in the Berlin Museum. 
