NO. 3 GARTH : SOME NEW SPECIES OF BRACHYURAN CRABS 59 



Measurements: Male holotype: length of carapace 11.0 mm., width 

 7.8 mm., length of cheliped 13.0 mm., of chela 5.4 mm., of dactyl 2.4 

 mm., of first ambulatory leg 26.0 mm. Female allotype: length 12.9 mm., 

 width 9.0 mm., length of cheliped 12.2 mm., of first ambulatory leg 

 21.8 mm. 



Diagnosis: Densely pubescent, posterior portion of carapace flat, 

 margins little projecting laterally. Rostrum thick, bluntly triangular. 

 Basal antennal article relatively wide. Hand of male broad as long, 

 fingers short. First ambulatory leg twice the length of carapace, pro- 

 podus of leg four sickle shaped. 



Description: Body and appendages covered with a dense, wooly pile 

 to which foreign matter adheres readily. Carapace narrowly triangular, 

 little or no flare at base of ambulatory legs. Branchial and intestinal 

 regions depressed, giving the posterior portion of the carapace a flat con- 

 tour broken only by the dome-shaped cardiac prominence. Rostrum thick, 

 bluntly triangular, length and breadth subequal, sides deflexed, two 

 double rows of short, curved setae. Orbits circular, not appreciably thick- 

 ened, unarmed; a minute postorbital granule. Eyestalks broad at base, 

 constricted at base of cornea, which is acuminate medially rather than 

 anteriorly. Neck broad, tumid, and of some length. Hepatic regions pro- 

 jecting but little beyond lateral contour, which makes an almost straight 

 line from cervical suture to postlateral angles. Gastric region high, 

 broad, anteriorly extending on to cervical region, laterally confluent 

 with hepatic regions, posteriorly flattened, surmounted by four groups of 

 curved setae arranged in a rectangle but with no median tubercle. Cardiac 

 elevation small, like gastric nontuberculate, surrounded by depressions 

 which set it off from the branchial and intestinal areas. Branchial regions 

 low, traversed by a longitudinal row of curved setae, sides not produced 

 laterally to cover the insertions of the ambulatory legs. 



Antennules folding longitudinally into fossae incompletely divided by 

 I the median septum. Antennae visible at sides of rostrum; basal article 

 broader than usual in the genus, traversed by a median ridge more promi- 

 nent on posterior portion, internal edge slightly laminate ; flagellum short, 

 second free segment overreaching rostrum by half its length. External 

 maxilliped with merus longer than broad, sides diverging anteriorly, 

 neither angle appreciably produced, internal margin spinulous. (See pi. 

 13, fig. 4.) Two low hairy ridges on sternum opposite coxae of chelipeds 

 in place of usual tubercles. 



