ZEUXIS. 37 



Besides the typical figure, I give a drawing of one of four 

 specimens in the Museum of the Philadelphia Academy, which 

 I identify with this species (fig. 146). 



N. INSIGNIS, H. Adams. PL 11, fig. 147. 



Smooth, 3'ellowish brown, with three revolving bands of chest- 

 nut maculations. Length, 11 mill. 



River Peiho, China. 



Said to have been found in company with Velorita, and there- 

 fore possibly a brackish-water species. Mr. Adams has proposed 

 for this shell the generic name Nassodorita, and refers it to the 

 family Buccinidae. The generic character is the development 

 of a tubercle within the thickened margin of the lip, and rather 

 above the periphery a position in which, according to experi- 

 ence, such a feature ought to be regarded as abnormal. It is 

 just possible that this shell is a Melanian. 



N. CORNICULUM, Olivi. PI. 11, figs. 148-150; pi. 12, figs. 



151-153. 



Upper w r horls finely plicate or smooth, three last whorls 

 smooth, impressed revolving lines on base, or sometimes entire 

 surface of body whorl. A ver} T thin horny epMermis covers 

 fresh specimens. Yellowish or reddish brown, with usually, a 

 pale central band ; sometimes maculated with white and brown 

 at the sutures, sometimes finely maculated over the entire sur- 

 face, with red-brown, sometimes trifasciate, or the bands broken 

 up into maculations. Salmon-colored w r ithin the aperture. 

 Length, -5-'75 inch. 



Mediterranean Sea, Atlantic Coasts of Southern Europe, 



and Northern Africa. 



A protean species, which, together with N. conspersa, Messrs. 

 Adams have referred to Amycla in Columbellidse : the shell, 

 animal and dentition, are decidedly Nassoid, however. N. semi- 

 striata, Brocchi (fig. 150), a fossil form, is considered distinct 

 by some of the best European conchologists, and N. trifasciata, 

 A. Ad. (unfigured), is made one of its synonyms; whilst N. 

 Gallandiana, Fischer (fig.* 152), is regarded as a variety of it. 

 I am not able to separate these from corniculum. N. Tinei, 

 Marav. (fig. 153), is also doubtfully referred to corniculum : it 

 is immature, possibly distorted in growth.; and perhaps badly 



