/ 
850 BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Front three-tenths width of carapace. Margin little convex, two-edged, lower edge closely granu- 
late, upper edge with about eight larger granules, intervening transverse sulcus hairy; median notch 
shallow, outer angle a prominent blunt tooth, separated by an almost rectangular notch from the 
inner orbital. angle, which is narrower, more spiniform, and more upcurved. 
A lobe on upper margin of orbit; outer angle narrow, acute; below it a deep narrow sinus. 
i'our teeth on antero-lateral margin (besides the orbital), separated by broad sinuses from which 
furrows run inward on the carapace; margins armed with large acute granules, tip of each tooth near 
its middle, last tooth smallest. 
Basal antennal joint narrow, anterior margin oblique, joining by its inner angle the sharp lower 
edge of the front and separated by a narrow slit from the sharp-pointed inner angle of the orbit. 
Lower surface of the carapace hairy and sparingly granulate. 
Chelipeds very unequal in both sexes. Surface granulate, arm serrulate 
above; surface of wrist and upper half of larger hand deeply rugose; carpal tooth 
narrow, blunt; smaller hand coarsely granulate, especially along upper margin, 
except on upper half of inner surface, which is deeply grooved. Both hands 
with a superior longitudinal groove and a tuberculiform tooth at articulation 
with carpus. Fingers long, grooved, fitting tight together; very large basal tooth 
on dactylus of larger chela. Color of thumb very slightly continued on palm. 
Legs very rough with granulation. Merus joints armed above with cylindrical 
blunt spines; largest on last pair. Carpal and propodal joints of all the legs and 
meral joints of last pair deeply grooved across and lengthwise. Legs and prox- 
imal half of chelipeds hairy. 
Color. — That of iron rust. 
Dimensions. — Female type, length 8.8, width 11.6, fronto-orbital width 6.9 
mm. Male, station 3847, length 7.8, width 10.9, fronto-orbital width 6.3 mm. 
Distribution. — South coast of Molokai Island, 23 to 66 fathoms, stations 3847, 3850 (type locality); 
Auau Channel, 21 to 28 fathoms, station 3874. Cat. No. of type, 29453. 
This species is altogether different from any other described species of Cycloxanthops, but 
approaches nearest to C. vittatus (Stimpson), which is wider, smoother, and has more antero-lateral 
teeth. 
-Cycloxanthops 
angustus, type fe- 
male, x 2§. a, Left 
chela. 6, Right 
chela. 
Pelceus armatus Eydoux & Souleyet. 
Pelceus armatus Eydoux & Souleyet, Yoy. Bonite, Zool., I, pt. 2, p. 226; atlas, pi. i, figs. 10-15, 
1842 (PeUe arme on plate). 
Hawaiian Islands (Eydoux and Souleyet). 
Etisus dentatus (Herbst). _ 
Etisus dentatus Alcock, Jour. Asiat. Soc. Bengal, LXVII, 1898, 129, and synonymy. 
Oahu, H. Mann, 1864, 1 female in Museum of Comparative Zoology. 
Etisus splendidus, sp. nov. 
(Pis. in and x.) 
Surface as in E. dentatus (Herbst). 
Antero-lateral border cut into 9 to 13 (exclusive of external orbital angle) procurved teeth, very 
uneven as to size and place, but about 5 of them larger than the others. 
Front more advanced than in -E. dentatus, the two lobes with slightly concave margins; median 
sinus not closed, but forming a buttonhole — that is, closed in ffont, narrowly open behind. Orbits 
larger; inner angle narrower, and separated by a deeper, rounder sinus from the front than in E. den- 
tatus. The space between the two upper fissures of the orbit does not form a tooth; the two inferior 
teeth are more widely separated than in E. dentatus. The lobe of the basal antennal joint extends 
farther out, filling the whole of the orbital fissure. 
Chelipeds in the fully developed male normally very strong and equal, as in the male from Ebon; 
in the type male from Honolulu market represented in plate x, the right cheliped is probably 
