94 CHICOREUS. 



I have before me specimens, however, which are very suggestive 

 of its derivation from the typical Senegalensis. 



M. Senegalensis, Gmel. PI. Ifi, fig. 159 ; pi. 17, figs. 1(58, l(i9. 



Body superiorly angulated, and armed on the varices with a 

 single, more or less produced spine, not froudose ; varices 

 nodose, but usuall}* not spinous elsewhere ; inter-ribs usually 

 two or three, whitish or brownish ; generally, in fresh specimens, 

 banded with brown; aperture varying from flesh to chocolate 

 color. Length, 1-5-2 inches. 



Senegal, Bio Janeiro. 



I have a good suite of specimens which enables me to connect 

 satisfactorily M. calcar with this species ; it may be designated 

 as a variety, however. 



Yar. calcar, Kiener (fig. KU)). 



The shell is whitisli, with fimbriately-laminated varices bear- 

 ing, superiorly, a long spine, which is not frondose. Length, 

 2-3-5 inches. 



Senegambia. 



M. pUciferus, Sowb. (fig. IfiS), is apparently the same as M. 

 calcar ; it was described from a single specimen in the Cumin- 

 gian collection. 



M. OuBBT, Reeve. PI. H, fig. 167. 



Of triangular fusiform shape, compressed on the lower part of 

 the body ; with slight spines except around the shoulder, where 

 they are well developed. The aperture is toothed within, and 

 white; the refet of the shell blackish-brown. Length, l*75-2-5 

 inches. 



W. C. Africa. 

 M. CAPUCiNUS, Lam. PI. 19, fig. 174. 



Shell narrow, with elongated spire ; varices thick, depressed, 

 fimbriated but not spinous, or but slightly so ; with nodulous, 

 revolving, elevated lines, and two inter-variceal nodes. Chocolate 

 color ; usually same tint within the aperture — the outer lip of 

 which is denticulate. Length, 2*5 inches. 



Phih'ppines ? Valparaiso, Porto Rico. 



The two latter localities are authentic, the first is that given in 

 the books, and is doubtAil. It should be found on the West 



