BRACHYURA AND MACEUEA OF HAWAIIAN ISLANDS. 
855 
• Xan.th.ias flavescens, sp. nov. 
(PI. ix, fig. 11.) 
Atypical Xanthias, of the form of X. lamarckii. Surface finely granular except on the postero- 
medial region. 
Orbital region marked off by a groove, gastric region and its three subdivisions well delimited, a 
well-marked groove extending from the third lateral 
sinus inward to the gastric region. 
Outer angle of front not very pronounced, sepa- 
rated from the supraorbital margin. Groove leading 
from the orbit faint. 
Antero-lateral border divided into four somewhat 
dentiform lobes (exclusive of orbital angle), the first two 
very low and preceded by rounded sinuses, the third 
more dentiform, but very obtusangular, the fifth very 
small and retreating. 
Chelipeds very unequal in the male, stout, gran- 
ulated; wrist also nodular; granules of palm arranged 
more or less in transverse series; larger chela very heavy, 
half as high as length of carapace; fingers of both chelae 
stout, grooved, not gaping; the dark-brown color of the 
index extending halfway back on the palm and also two- 
thirds its height, inside and out. 
Legs finely granular, nearly naked; merus joints 
minutely serrulate above; next two joints nodular. 
A small species, an adult male measuring 4.6 mm. long, 7.2 wide, fronto-orbital width 4.7 mm. 
Distribution. — Vicinity of Laysan Island, 79 to 130 fathoms, station 3936 (type locality); Aleun-i- 
hana channel, 176 to 49 fathoms, station 4066. Cat. No. of type, 29584. 
The adult females are only 5.7 and 4.3 mm. wide, respectively. The lateral teeth are more pro- 
nounced than in the male, and the chelipeds are very unequal, though less so than in the male. 
Color. — The specimens are almost white in alcohol, chelipeds and legs banded with yellow, cara- 
pace with a few longitudinal stripes of the same color. 
One can separate this from X. lamarckii by the smoother carapace, nonacuminate lateral teeth and 
uneven chelipeds. 
Xanthias notatus (Dana). 
Xanthodes notatus Alcock, Jour. Asiat. Soc. Bengal, LX VII, 1898, 158. 
Honolulu; Waikiki Beach; Laysan. 
Hawaiian Islands (Dana, Miers). 
Xanthias minutus (Rathbun). 
(PI. ix, fig. 14.) 
Xanthodes minutus Rathbun, Proc. U. S. National Museum, XVI, 1893, 238. 
Surface smooth, except for the areolations, and shining. Deep grooves separate the fronto-orbital 
region, the epigastric, protogastric, and mesogastric areas, ' extend inward from 
the last two lateral sinuses and cut off the second of the marginal lobules. 
Hepatic and protogastric lobules faintly divided anteriorly. 
Front divided into two convex lobes and having a submarginal groove; three 
distinct grooves in the orbital border. Antero-lateral border cut into four rounded 
lobes including the orbital. The basal antennal joint runs up a little way along- 
side the dentiform prolongation from the front, but does not nearly reach the tip 
of the lower inner angle of the orbit. 
Chelipeds subequal; upper border of arm ending in sharp tooth, a subter- 
minal notch; wrists nodose, inner angle bilobed; hands marked by a few longitudinal ridges, the 
upper of which is somewhat nodose, surface covered with fine reticulating granules. Fingers pointed, 
not gaping, index grooved, dactylus with lines of punctse; color of index extending back on the palm. 
Fig. 16 .— Xanthias 
minutus, station 
4169, chela, x 2f . 
