50 
tion. 
Bulletin American Museum of Natural History [Vol. LITT 
Measured 6n the upper margin the dactyl of the outer left ambulatory leg is 
about five-sixths as long as the propodus, the latter joint is virtually three times 
as long as high at the middle. As is characteristic of this and related pecies of Cli- 
banarius, the outer face of the propodus of this leg is more or less flattened, with an 
overlapping subacute, obscurely serrated upper margin; these obscure serrations are 
formed, as it were, around the ten or eleven tufts of hair arising from prominent 
puncte, for the reception of which the margin seems to be indented. 
Fig. 70. 
chapint, new species, from 
St. Paul de Loanda. : : vase 
Dorsal view of anterior por- Stimpson? and Osorio’ merely list it from West 
x 6 
Clibanarius 
In the genus Clibanarius color is very diagnostic 
and, except in very much faded specimens, usually fur- 
nishes a ready means for distinguishing species. In this 
respect our species is very distinct; in alcohol it ap- 
pears to be generally white, marked with red orange- 
brown; the whitish ambulatory legs are margined, more 
or less, especially on the upper margins of the dactylar, 
propodal and carpal joints, with the reddish-brown 
color; the meral joints have a single median band of 
the same color on the outer or posterior surface; in 
addition there are scattered spots of the reddish color 
on the lateral faces of the legs. General color of the 
chelipeds red orange-brown, with the teeth yellowish 
white, the spines light corneous, with tufts of straw- 
colored hairs or setz arising from anterior side of their 
bases, and the fingers black-tipped. 
Of the species of Clibanarius other than 
C. virescens reported from the West African 
coast and having dactyls shorter than or at 
least not longer than the propodus, C’. equabilis 
Dana! is possibly the only one for which our 
species might be mistaken. Most authors like 
Fig. 71. 
Clibanarius chapini, new species, from St. Paul de Loanda. 
Lateral aspect of second left ambulatory leg. xX 6. 
11852, ‘Crust. U.S. Expl. Exped.,’ pt. 1, p. 464; atlas, 1855, Pl. xxx, fig. 4. » 
71858, Proc. Acad. Nat. Sci., Philadelphia, X, p. 247. Loc. Madeira. 
*Vide Rathbun, 1900, Proc. U.S. Nat. Mus., XXII, p. 304. Loc. Princess Island. 
