CLAVATULA. 929 
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. 
TT, 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-whorl below it, 
caused by rude curved longitudinal ribs crossed by revolving 
sculpture ; light yellowish brown, sometimes fasciated ; 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 
Turris 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, Muresz 
Turris coronatus, Chemn., Murex clavatulus, Dillw., P. conica, 
Encye. 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 (PI. 18, fig. 19; Pl. 30, fig. 
17), C. mystica, Reeve (fig. 27), a very similar form to the last. 
Var. RUBRIFASCIATA, Reeve. PI. 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 C. 
FSerruginea, Maltzan (PI. 30, fig. 83), described as an entirely 
ferruginous-colored variety of C. rubrifasciata. 
C. IMPERIALIS, Lam. PI. 8, fig. 13. 
Shell ovate, short, ventricose, clothed with a thick, dark olive- 
colored epidermis; whorls angulated above, the angle having a _ 
