NO. 2044. NEW PHTLTPPINE CRABS— RATHBUN. 73 



Carapace a little broader than long, narrowing behind, the sub- 

 rectangular epibranchial tooth at some little distance behind the 

 acute orbital angle, the margin behind the second tooth slightly con- 

 cave. Surface covered with tufts of coarse hair, intervening spaces 

 smooth except for the customary granulate lines on the postero-lateral 

 portions. Regions deeply separated from one another. Postfrontal 

 lobes separated by deep and wide U-shaped smuses, of which the 

 median is much larger than the lateral; submedian lobes more than 

 one and one-half times as wide as outer lobes. Surface of front veiy 

 much as in S. tseniolatum White, ^ bemg concave and smooth except 

 for a few tubercles; lower margin very smuous. Upper margui of 

 orbit long and sinuous and directed backward to the orbital tooth. 



Upper margin of merus of cheHped armed with a large flat sub- 

 distal tooth; inner margin sparingly denticulate or spinose and 

 expanded distally in a broad tooth. Outer surface of merus and 

 carpus covered with granulated hncs and tubercles; inner angle of 

 carpus armed with a subrectangular tooth; outer and upper surface 

 of propodus covered with tubercles, which for the most part are 

 depressed and separated by reticulating grooves; fingers devoid of 

 granules or tubercles except on the upper part of the dactylus; 

 upper margin of palm thin, crossed by short, crowded and nearly 

 longitudinal lines of granules, close to which runs a single Une of 

 smaller granules extendmg from the articulation with the carpus to 

 the tooth at the distal end of the upper margin; no pronounced 

 transverse elevation on imier surface of pahn, but a feeble trace of a 

 ridge; this surface is sparingly dotted with granules; fingers with a 

 narrow gape (in the female), prehensile edges furnished with low 

 uneven teeth; upper edge of dactylus margined, and milled incon- 

 spicuously on the proximal haK with about 25 grooves which stop 

 short of the basal end. 



Ambulatory legs broad; third pair one and two-thirds times as 

 long as carapace; merus joints broad, that of thu'd pair a little over 

 twice as long as broad, and armed with a strong, acute subdistal 

 tooth ; propodi long and dactyli short, the latter seven-tenths as long 

 as the former in the tliird pair. 



Terminal segment of female abdomen a little longer than wide and 

 so deeply invaginated in the sixth segment that the latter reaches 

 nearly as far forward as does the terminal segment. 



Closely allied to S. tseniolatum from which it differs in its longer 

 and narrower carapace; narrower front; in the greater difference in 

 the width of the outer and iimer frontal lobes; in the granulate, not 

 pectinate, ridge near the upper margin of the palm, which is closer 

 to that margin and not straight but follows the slight curve of the 

 margui; and in the absence of a transverse ridge inside the palm. 



' Alcock, Joum. Asiatic Soc. Bengal, vol. 69, 1900, p. 419, and synonymy. 



