32 OLEACINA. 



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



Crowded with regular longitudinal costulae, 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. Carolina to Florida. 



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



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



Shell solid, shining, rose-yellow or whitish, C3 r lindrically 

 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. PI. 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. truncata, Gmel. 



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



Solid, longitudinally finely st date-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, arid 0. dactylus, Brocl. 



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



Yellowish flesh-color, with margined suture ; the longitndinal 

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



Mexico. 



Somewhat related to the preceding species in coloring, but 

 differs in size and sculpture. 



