NO. 3 GARTH : SOME NEW SPECIES OF BRACHYURAN CRABS 87 



Diagnosis: Carapace granulate, regions defined. Merus of outer 

 maxilliped produced at anteroexternal corner. Carpus of major cheliped 

 obliquely quadrilateral. Anterolateral teeth four, margin upturned. A 

 hepatic cluster of granules. Outer third of palm smooth, punctate. 



Description: Carapace very convex longitudinally, less so from side 

 to side; anterolateral margins upturned. Regions defined, surface granu- 

 late, granulations becoming larger and rougher toward the arcuate an- 

 terolateral margins, sulci smooth and bare. Front between one-third and 

 one-fourth times width of carapace, truncate, edge thin, a slight emargi- 

 nation, and an inconspicuous outer lobe. Orbits elongate oval, separated 

 from front by a shallow but distinct sulcus, closed fissures above indi- 

 cated only by the slight convexity of the intervening margin. Antero- 

 lateral teeth four beside exorbital, well separated, triangular, and granu- 

 lous margined; the first small, well removed from the orbit; the second 

 larger, broader, and obtusely angled ; third tooth largest, tip almost 

 hooked forward ; fourth tooth slender, directed obliquely upward ; width 

 of carapace at third and fourth teeth subequal. Posterolateral border 

 longer than anterolateral, sides sharply converging. A prominent cluster 

 of subhepatic granules. 



Antennules folding transversely, separated by a strong median sep- 

 tum. Basal antennal article small, far removed from buccal cavity, flagel- 

 lum lodged in orbital hiatus. A prominent inner suborbital tooth with a 

 broad, lamellar tooth separated from it. Epistome broad with a trans- 

 verse carina. Merus of outer maxilliped broader than long, anteroexternal 

 angle strongly produced. (See pi. 24, fig. 4.) 



Chelipeds of female similar but unequal. Merus with a granular 

 ridge terminating in a transverse sulcus. Carpus of major claw obliquely 

 quadrilateral, a stout spine at inner angle and a well-defined sulcus 

 parallel to the distal border. Chela, like carpus, granulate; granules 

 arranged proximally in rows; outer third of palm smooth and minutely 

 punctate. Fingers long, slender, tapering, deflexed, slightly incurving, 

 meeting with but a slight gape, and irregularly toothed. Basal lobe on 

 dactyl lacking in minor hand. Height of palm equal to superior margin. 

 (Seepl. 24, fig. 3.) 



Ambulatory legs slender, attenuated, pubescent; merus and carpus 

 granulate above. Dactyls long, straight, and slender, that of leg four 

 slightly upcurving. 



Remarks: The reference of the proposed new species to the genus 

 Pseudorhombila Milne Edwards (1837) instead of Oediplax Rathbun 



