NO. 2044. NEW PHILIPPINE CRABS—RATHBUN. 75 



broken lines of granules; upper half of inner surface sparingly granu- 

 lous, no transverse ridge present. The fingers do not gape when 

 closed, although the irregular teeth do not fit snugly together; the 

 upper margin of the dactyl bears 6 spinules on the proximal hah. 



Merus joints of legs diminishmg toward both ends, upper surface 

 roughened with fine granules, anterior margm with a short subdistal 

 tooth tipped with a back bristle, merus of thhd pair about two and 

 thi'ee-fourth times as long as wide. Last tlu-ee jomts narrow, bor- 

 dered with dark bristles; dactyli nearly straight till near the tip, a 

 little longer than their respective propodi. 



In the male abdomen the margins are concave from the begiimmg 

 of the fourth to the beginning of the sixth segment; terminal segment 

 large, as wide as long, and as wide as the adjoining end of the sixth 

 segment. 



This species is most nearly related to .S'. sinense Milne Edwards.^ It 

 differs from sinense in its narrower front, only half as wide as the dis- 

 tance between the orbital angles, m having a third tooth on the side 

 margins, in the middle part of the outer surface of the palm being 

 nongranulate, and m the absence of a transverse granular Ime on the 

 inner surface. 



SESARMA (SESARMA) MINDANAOENSE, new species. 



Type-locality. — Small stream south of Cotabato, I^iindanao; May 

 20, 1908; 1 female. 



Type.—Cat. No. 45765, U.S.N.M. 



Dimensions. — Type female, length of carapace 18.2 mm.; width at 

 antero-lateral angles 19 mm., width at postero-lateral angles 20.2 

 mm., width of front 11.2 mm., height of same 2.3 mm., length of pro- 

 podus of cheliped below 9.4 mm., same above 3.3 mm., height of same 

 4.2 mm., length of merus of third leg 15.6 mm., width of same 6 mm. 



Carapace convex, regions well marked, especially the mesogastric 

 and the cardiac; a groove parallel to the gastro-cardiac groove cuts 

 off a narrow strip of the mesogastric region except across the middle; 

 surface rough with coarse pits and fine grooves; from most of the 

 pits a bunch of short hairs arises; one of these bunches is situated on 

 each of the 4 tubercles behmd the postfrontal lobes; the tubercles of 

 the outer pair are further forward than those of the inner pair and are 

 nearly the size of the postfrontal lobes. These lobes are deeply and 

 widely separated, the outer ones three-fifths as wide as the mner ones; 

 the intervening furrows are continued well back on the carapace; 

 sides of front parallel, lower rim projecting, in dorsal view bilobed 

 and with a broad median sinus, in front view arcuate and a little 

 sinuous. Upper margin of orbit oblique, orbital angle acute; outer 

 margin of orbital tooth sloping backward and inward; next lateral 



' See de Man, Zool. Jahrb., Syst., vol. 2, 1887, pp. 648 and 609. 



