MOLLUSCA. 631 
developed in higher localities; San J osé, 1161 metres, Azahar de Cartago, 1500 
metres, and Tablazo, 1600 metres (Biolley 1). 
Otostomus attenuatus (p. 215). 
Otostomus attenuatus, Biolley, Mol. terr. y fluv. de Costa Rica, p. 12". 
To the localities given, add:— 
Hab. |Cuntrat Costa Rica:] one of the commonest species of the genus on the central 
tableland of Costa Rica, and found in the hollow trunks of Ficus? (** higueron ”) 
and Erythrina (“ poré”); the typical form of the species at Cartago, 1442 metres, 
the var. concolor ieotatcdl in various localities, the var. varicosus at San José, the 
var. pottiert at Cartago (Biolley 18) *, 
[S.W. Costa Rica:] Valley of Diquis, 800 metres (Pittier : var. pittieri). 
Otostomus costaricensis (p. 217). 
Otostomus costaricensis, Biolley, Mol. terr. y fluv. de.Costa Rica, p. 137. 
Biolley’ gives Cartago and San José as localities, whence I have already recorded it. 
Otostomus emeus (p. 222). 
Bulimulus palpalaensis, Fischer & Crosse, Miss. Scient. Mex., Moll. ii. p. 667, t. 72. figg. 6, 6 a—c’”. 
Otostomus irazuensis (p. 224). 
Otostomus trazuensis, Biolley, Mol. terr. y fluv. de Costa Rica, p. 13 *. 
To the localities given, add :— 
Hab. {Cuyrrat Costa Rica:] Tierra Blanca, on shrubs of Cestrum sp. (“ zorillo”), all 
the varieties previously indicated by me (anted, p. 224) together, the var. ¢ rarer 
than the others; Pueblo de Cot, also on the slope of the Volcan de Irazu 
(Biolley +); Estrella de Cartago (Biolley, 1898). 
Otostomus tripictus, var. hoffmanni (p. 225). 
Otostomus tripictus, var. hoffmanni, Biolley, Mol. terr. y fluv. de Costa Rica, p. 14°. 
To the localities given, add :— 
Hab. [Cunrrat Costa Rica:] Tarbaca, 1700 metres, south of San José, and on the 
slope of the Volcan de Barba, 1600 metres (Biolley *). 
Otostomus sulfureus (p. 225). 
Otostomus sulfureus, Biolley, Mol. terr. y fluv. de Costa Rica, p. 14 - 
To the localities given, add :— | | 
Had. NE. Costa Rica: San Juan, Sarapiqui, 100-200 metres, typical form (Biolley !*). 
E. Cosra Rica: Turrialba, typical form, Tuis and Santa Clara (Pittier and Biolley '). 
* Among the shells sent by Biolley to P. Godet, of Neufchatel, the var. varicosus, from Cartago, is 
present. 
