32 OLEACINA. 



0. ORNATA, Pfeiffer. PI. 5, fig. 57. 



Crowded with regular longitudinal costuloe, pellucid, orange- 

 red ; whorls 8, suture margined by a crenulated sulcus. 



Length, 72 mill. 



New Granada. 

 0, costulata, Pfeiffer, is a synonym. 



0. TRUNCATA, Gmelin. PI. 4, fig. 56 ; PL 5, figs. 58, 60. 



Shell solid, with crowded longitudinal plicate striae and occa- 

 sional sulci ; whorls 6, suture subcrenulately margined ; ash-rose 



or rose-yellow. Length, 65 mill. 



So. Carolma to Florida. 



This is 0. striata, Desk., and Polyphemus glans, Say. 



0. PARALLELA, W. G. Binney. PL 5, fig. 59. 



Shell solid, shining, rose-yellow or whitish, cylindrically 

 elevated, the sides compressed, subparallel ; longitudinally 



plicate-striate. Length, 55 mill. 



Louisiana, Texas. 

 Is possibly only a variety of the last species. 



O. BULLATA, Gould. PL 6, fig. 75. 



Thin, pellucid, shining, reddish corneous to whitish, closely 

 longitudinally plicate-striate ; whorls 5, the last inflated, suture 



undulating, submargined with white. Length, 38 mill. 



Louisiana. 

 Possibly a form of 0. trancata, Gmel. 



0. STRIATA, Miiller. PL 5, fig. 64. 



Solid, longitudinally finely striate-plicate ; whorls 7-8, suture 

 margined, crenulated ; yellowish white, or light pink-yellow, 

 inconspicuously narrowly striped with reddish brown. 



Length, 56 mill. 



Bolivia, Cayenne, N. Granada. 



The synonyms are Helix tenera, Gmel., H. incumbens, Dillw., 

 0. Mulleri, Gray, and 0. dactylus, Brod. 



0. LINEATA, Strebel. PL 8, fig. 3. 



Yellowish flesh-color, with margined suture ; the longitudinal 

 plicate strise crossed by fine spiral lines. Length, 45-49 mill. 



Mexico. 



Somewhat related to the preceding species in coloring, but 

 differs in size and sculpture. 



