EUPLEURA. 15 t 



c, judging from its operculum, which is purpuroid. A 

 more shouldered variety has been described by Adams and Angas 

 as Adamsia Adelaidse (fig. 488), and again by the latter as Pur- 

 //ra neglecta (fig. 496). Rev. E. Teiiison-Woods has proposed 

 the generic name Agnetria for this shell, that of Adamsia being 

 preoccupied by E. Forbes in Anthozoa. Tasmanian specimens 

 are banded with purple or chestnut. 



fienus EUPLEURA, H. and A. Ad. 



Stimpson has shown (Am. Jour. Conch., i, 58, 1865), that Ra- 

 nella caudata, Say, has the dentition of the Muricidse (instead of 

 that of the Ranellidse). The tongue of no other species of Eupleura, 

 however, has been examined, and it was, perhaps, unadvisable to 

 separate this group so widely from its former congenerers on the 

 evidence of a single character in a single species. I can readily 

 place Eupleura in the Muricidse, however, because I think that 

 in its conchological characters it forms a passage between Murex 

 :ind Ranella, as I believe Odnebra to form a passage between 

 Murex and Purpura, Urosalpin-x between Mures; and Fus-us, etc. 

 Kobelt, who has recently monographed the Muricidse, considers 

 llroxalpinx and Eupleura both subgenera of Trophon. 



1<1 CAUDATA, Say. PL 39, fig. 503. 



Color varying from nearly white to dark brown, livid within. 

 Animal has a light yellow foot ; siphon, head and tentacles nearly 

 white. Length, '6-1-2 inches. 



Narragansett Bay> Mass., to Georgia and Florida. 



Generally, the southern specimens are largest. The two lateral 

 v:i rices characteristic of Ranella are sometimes scarcely more 

 developed than the intermediate ribs. Operculum purpuroid. 



E. TAMPAENSJS, Conrad. PI. 39, fig. 497. 



This is a more robust species than the preceding, the longitu- 

 dinal ribs are more elevated and sharper, and the reA^olving ribs 

 coarser and more distinct. The canal is much shorter ; teeth 

 within the lip smaller and more numerous. Aperture dark chest- 

 nut within. Length, 1 inch. 



W. Coast of Florida. 



May possibly prove to be an extreme form of E. caudata. The 

 lateral varices are not distinguishable from the others. 



