868 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Dimensions. — Male, length 11.8, extreme width 21.5, width to base of lateral spines 15.3, fronto- 
orbital width 8.7 mm. 
Type locality. — South coast of Molokai Island, 92 to 212 fathoms, station 3838; 1 male, immature 
(Cat. No. 29674). 
A young and much-mutilated specimen was taken at station 3982, vicinity of Kauai Island, 233 to 
40 fathoms, in which the frontal teeth of t^e median pair are considerably more advanced than those 
of the lateral pair and are separated from each other by a very narrow fissure. 
P. hexagonum can be told at once from the type species, P. orientalis, by the broader, more hex- 
agonal carapace, additional side tooth, and longer side spine. 
Parathranites latibrachium, sp. nov. 
In shape resembles P. hexagonum. Length about three-fourths of width exclusive of spines. 
Surface with a number of prominent tubercles, lower than in P. hexagonum; of these one is proto- 
gastric, two side by side on posterior mesogastric, two cardiac behind the preceding, and two forming 
an obliquely longitudinal line at inner angle of branchial 
region. A smaller tubercle is anterior mesogastric, and 
one posterior cardiac. All the elevated portions granu- 
lated. 
Front more advanced than in P. hexagonum, four- 
toothed, median pair blunt, triangular, about as wide as 
median sinus, more advanced than lateral pair, which 
are broad-triangular, subacute, and set off by a U -shaped 
sinus. 
Antero-lateral projections six, the first or orbital 
blunt, the others becoming slenderer and sharper ex- 
cept the last, which is a long stout spine. 
Posterior margin ending in a short upcurved spine. 
Lobe at lower inner angle of orbit not nearly so 
advanced as the front; outer emargination of moderate 
Fig. 26 .—Parathranites latibrachium , male type, a, size. Basal joint of antenna with a narro# outer lobe 
Dorsal view, x 2|. 6, Abdomen, x 4|. which runs into the orbital hiatus. 
First joint of palpus of outer maxilliped with its 
inner margin remarkably expanded, forming a vertical lamina. Epistome better defined and more 
deeply notched than in P. hexagonum. 
Three spines on inner border of arm, one very small at outer distal end. A long spine half as 
long as palm at inner angle of wrist and a strong spine at outer angle. Three spines on hand, the 
inner strong and subdistal, the outer subdistal small, the one above the wrist curved, three additional 
costse on outside and two on inside of hand. 
Natatory legs unarmed, merus very little longer than wide. 
Second and third segments of male abdomen carinated, sixth much longer than wide, sides 
converging. 
Dimensions. — Male, length 6, extreme width 10.8, width to base of lateral spines 8.4, fronto-orbital 
width 6 mm. 
Type locality. — Vicinity of Modu Mann or Bird Island, 20 to 30 fathoms, station 4158; 1 male (Cat. j 
No. 29676). 
By the broad merus of the last pair of feet and the lobe on the basal antennal joint, this species is 
most notably separated from the other Parathranites. 
Lissocarcinus orbicularis Dana. 
Lissocarcinus orbicularis Alcock, Jour. Asiat. Soc. Bengal, LXVIII, 1899, 20. Ortmann, Bronn’s 
Thier-Reichs, V, 1900, IIAbth., 1239. 
Honolulu Reef, May 8, 1902, 1 female; Puako Bay, July 12, 1902, 1 male from a holothurian. 
