494 
Superfamily AKTEOPHILA. 
Family AURICULIDA. 
Genus Carycuium Miller. 
Carychium exile H.C. Lea. Moll. Chi. Area, Pl. XXVI, Fig. 4. 
Station XXVIII. 
SUBORDER STYLOMMATOPHORA. 
MONOTREMATA. 
ORTHURETHRA. 
Family PUPILLID. 
Genus VerTIGO Draparnaud. 
Vertigo ovata Say. Moll. Chi. Area, Pl. XXX, Fig. 13. 
Station XXVIII. 
Genus Brriparia Sterk1i. 
Bifidaria contracta (Say). Moll. Chi. Area, Pl. XXX, Fig. 8. 
Station XXXIV. 
Bifidaria pentodon ey: Moll Chi. Area. sPl Sexe Bier 28 
Station XXXIV 
Genus STROBILOPS Pilsbry. 
Strobilops virgo (Pilsbry). Pl. XXV, Fig. 23. 
Stations XIX, XXXIV. 
HETERURETHRA. 
Superfamily ELASMOGNATHA. 
Family SUCCINEID. 
Genus SucciINnEA Draparnaud. 
Succinea avara Say. Moll. Chi. Area, Pl. XXX, Fig. 25. 
Stations II, Ill, IV, Vo Vill, XU XV, XVI, XXXVI, eee 
XX XIII. 
Succinea retusa Lea. Moll. Chi. Area, Pl. XXX, Fig. 24. 
Stations [Pill 1V-ViLl Lx x Xl xe 
Succinea ovalis Say. Moll. Chi. Area, Pl. XXX, Fig. 22. 
Stations VIII, XII. Quite typical, with broad aperture and green- 
ish colored epidermis. 
