54 BCALARIA. 



Scalaria has been monographed by : 



icr, Iconog. Coq. vivantes. 20 I. (Xo date.) 



Sowerb}', Thesaurus Conchyliorum, i. 93 species. 1847. 



Sowrrly, in Reeve's Conch. Icon., xix. 125 species. 1874. 



Besides these, Morch has published in the Journal of the Phila- 

 delphia Academ3 T ,viii, 1876, an impoit.'int paper on the West Indian 

 ies, based principally on the study of the specimens belonging 

 to the Robert Swift collection, in the museum of that institution. 



An alphabe ;alogue of the recent and fossil species of 



Scalaria, published by H. I*. Nvst in the Annales de la Soc. 

 Malacol. de Belg., vi, 1873, includes 162 living, 161 tertiary, 51 

 cretaceous and 4 Jurassic species. 



Genus SCALARIA, Lam., 1801. 

 Section SCALARIA (sensu stricto). 

 S. PRETIOSA, Lam. PI. 11, fig. 31. 



Widely umbilicated, smooth, polished, usually fleshy white, 

 ls ivory-white ; whorls 8, rounded. Length, 2'5 inches. 



China, Australia, Moluccas. 



This is the well-known " precious wentletrap," the Turbo 

 scalaris, of Linnaeus. 



S. CRENULATA, PeaSC. PI. 11, fig. 32. 



Uml> smooth, white; whorls 4, separated by a deep, 



wide suture ; lamellae 6, creuulated on the edge. Length, 5 mill. 



Taint i. 



At first sight appears like a diminutive S. pretiosa, but is 

 wider, with less numerous, crenulated va rices. 



S. PALLASI, Ki. N r, I'l. 11, fig. 33. 



Shell narrower than 6 itli narrower umbilicus, Meshy 



white between the ribs; whorls 8, somewhat disunited, lainelhe 

 more numerous than in S. ;/>/ ZMSU, usually slightly hooked at 

 p of the whorls. Length, 1-5 inches. 



; 7/7/7'/'//J<'s, Mauritius. 

 leglecta, KIM-V,- (not Adams and Reeve); 



S. subpretiosa, Blainv. ; fi . M, nke. and ,S. Nicobarica, 



Beck, MS. 



