CLAVATULA. 229 



maculations and a revolving series of small brown spots just 

 above the lower carina. Length, 33 mill. 



Senegal. 

 Very doubtfully distinct from the following species. 



C. MURICATA, Lam. PI. 8, figs. 22, 21, 15-19, 27; PL 30, figs. 

 77,83. 



Upper portion of whorls smooth and concave, with a sutural 

 band of tubercles, sometimes becoming spinose ; the periphery 

 angulated, and tuberculate, as well as the body-M r horl below it, 

 caused by rude curved longitudinal ribs crossed by revolving 

 sculpture ; light yellowish brown, sometimes fiisciated ; aperture 

 occasionally light violaceous, but mostly white. 



Length, 40 mill. 



W. Coast of Africa, South Africa. 



Varies much in form and in the degree of development of the 

 tubercles and spines ; the younger and less robust specimens also 

 have a somewhat longer canal. I include here several specific 

 names heretofore regarded as distinct forms : C. virginea 

 (Chemn.), Reeve {fig. 21), is a spineless form, the name of which 

 would have priority, if it were binomial ; it is, however, "Murex 

 Tunis virgineus," which is not admissable. The name which I 

 have adopted for the whole series of forms is that one which is 

 in most common use, and represents the usual state of the 

 species. Other synonyms are Murex mitratus, Wood, Murex 

 Turris coronatus, Chemn., Murex clavatulwt, Dillw., P. conica, 

 Encyc. Meth., C. bimarginata, Lam. (fig. 15), C. diadema, 

 Kiener (fig. 18), a younger and thinner shell, perhaps inhabiting 

 more quiet localities than the heavier specimens ; C. gravis, 

 Hinds (fig. 16), C. sacerdos, "Reeve (PL 18, fig. 19; PI. 30, fig. 

 77), C. mystica, Reeve (fig. 27), a very similar form to the last. 



Yar. RUBRIFASCIATA, Reeve. PL 8, fig. 17 ; PL 30, fig. 83. 



Shell yellowish brown, banded with bright red and ash-color. 

 Appears to be connected with the typical species through G. 

 ferruginea, Maltzan (PL 30, fig. 83), described as an entirely 

 ferruginous-colored variety of C. rubrifasciata. 



C. IMPERIALIS, Lam. PL 8, fig. 13. 



Shell ovate, short, ventricose, clothed with a thick, dark olive- 

 colored epidermis; whorls angulated above, the angle having a 



