130 Bulletin Vanderhilt Marine Museum, Vol. V 



(Whitelegge) ; Society Islands, (Boone) ; Palmyra Island, Fanning 

 Islands, (Edmondson) ; Mauritius, (Miers) ; Salomon, Coetivy, (Rath- 

 bun) ; lagoons, bays and shores of New Caledonia, (A. M. Edwards). 



Material examined: One female taken on Venus Point Reef, 

 Tahiti, Society Islands, August 15, 1931. One male and one female 

 taken from coral reef, Teviatoa Reef, Raiatea Island, Society Islands, 

 August 21, 1931. 



Technical description: Carapace broadly oval, one-third wider 

 than long, decidedly convex in both directions; regions of carapace 

 well delineated, and subdivided into numerous suboval and rounded 

 lobules, which have their surfaces finely pitted, and are rather regu- 

 larly spaced, those on the outer branchial region being the largest, 

 while toward the postlateral region they become noticeably smaller. 

 The anterolateral border is widely rounded, consisting of eleven or 

 twelve coarse crenulations ; the posterolateral margins are concave. 

 The frontal margin is moderately wide, deflexed with two prominent 

 rounded, submedian tubercles on the outer side of these, it is concave 

 toward the superior orbital angle which consists of a small rounded 

 tubercle. The orbital margin is beaded by eleven or twelve small 

 rounded tubercles, the inferior angle not touching the superior. The 

 sidewalls of the carapace are smooth. 



The external maxillipeds are smooth externally, devoid of setae 

 except for the brush along the inner lateral margin of the ischium. 

 The merus has a conspicuous deep notch in the anterior margin. 



The chelipeds are unequal in both sexes; the merus is smooth ex- 

 cept for a tubercular crenulation along the superior lateral margin, 

 and outer distal surface which is paved with flat granules and fringed 

 with setae. The carpus is convex on the upper surface, and covered 

 with coarse rounded tubercles, similar to those on the carapace; the 

 propodus is almost as high as long, with the outer surface covered 

 with coarse rounded tubercles; which along the upper margin become 

 sharp conical tubercles ; on the inner surface, there is a mosaic design 

 made up of flattened tubercles; the fingers are short, blunt, with hol- 

 lowed out tips, the cutting edges meeting in the females and furnished 

 with a series of coarse blunt teeth. The upper surface of the hinged 

 finger is covered for the proximal half of its length with a series of 

 coarse conical tubercles, the basal two of which are much higher than 

 the others. 



The ambulatories are of moderate size, the merus with the lower 

 margin deeply excavated distally for the reception of the carpus when 

 reflexed. The carpus and propodus are short and wide, the dactyl is 



