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DiagnOSes Hlolliiscorain iioTorum relpiibllcœ 

 Iflexicanœ, 



AucT. fl. Crosse et P. Fischer. 



1. Tebennophorus Sallei. 



Corpus elongatum, antice parum dilatatum, postice ob- 

 tusum; clypeus caput tegens; unicolor, griseo-cinerescens; 

 solea pallidior. 



Longit. [specim. inalcoh. serv.),'2,bmilL 



Hab. Playa Vicente. (Salle.) 



Obs. Species a T. Caroliniensi, statura minore, corpore 

 immaculato, distincta ; differt etiam a T. dorsali, statura 

 majore, corpore haud gracili. 



2. Streptostyla Botteriana. 



T. elongato-turrita, utrinque attenuata, solidula, costu- 

 lis flexuosis, confertis [aliis regularibus^ aliis ad angu- 

 lum anfraciuum lamellarum prominularum, subdistan- 

 tium quasi coronam efformantibus) longitudinaliter 

 impressa j subsericea, castaneo-fulva, unicolor; spira elon- 

 gata, gradata, apice rotundato,obtusulo; sutura impressa; 

 anfr.l gradati, embryonales 11/2 sublœves, concolores, 

 sequens convexiusculus, œqualiter striato-costulatus, cœ- 

 teri obtuse angulati, subinflati, mox attenuati, ultimus 

 spira paulo minor (: : 3 1/2 : ^), versus médium valde com- 

 pressus, basi attenuatus ; columella callosa, crassa, valde 

 torta, extus in tuberculum obtusum desinens, haud trun- 

 cata, albida; apertura elongata, (lexuose auriformis, an- 



