118 PLEIOCENE FOSSILS. 



TROGHUS ARMILLATUS.— {New Species.) 

 Plate XXVI. Fig. S. 



T. testa depressa; anfractuum superficie una linea granulata, simpliciuumque spirce modo 

 intortuum linearum quatuor paribus instructa; sutura canaliculata; peripheria sub-angulata 

 tenuiter longitudinaliter striata; umbilico prof undo, basalibus spira modo intortis elevatis 

 lineis circumdato, quarum duos granulata; unaque simplex, reiiqua numerosce tenuceque; aper- 

 tura sub-quadrangulari. 



Description. Shell depressed; surface of whorls with four pairs of simple revolving 

 lines and one beaded line elevated below the suture extending from the apex to aperture ; 

 suture channeled ; periphery sub-angulated, finely striated longitudinally ; umbilicus pro- 

 found, surrounded at the base with revolving raised lines, two of them beaded and one 

 simple, the others numerous and fine; aperture sub-quadrangular. 



This pretty species may be easily distinguished by its beaded spiral line which revolves 

 below the suture from the apex to the aperture. 



Plate XXVI. Fig. 3, Natural size. 



Locality.. Waccamaw. Museum, College of Charleston. 



TROCHUS GEMMA. — {New Specks.) 

 Plate XXVI. Fig. 4 



T. testa parva, turrita; spira depressa; anfractibus angulatis, superiori superficie plana 

 duabus elevatis crenulatis striis; striis super ioribus pulclire crenulatis; striis mediis granu- 

 lans; basi convexa, striata; umbilico prof undo, crenulato; apertura superiori basalique mar- 

 ginibus angulatis. 



Description. Shell small, turrited; spire depressed; whorls angular, superior surface 

 flat, with two raised crenulated striee on each whorl, one at the angle and the other in the 

 middle; superior striae beautifully crenulated, middle striae finely beaded; crenulations 



