1902.] CRUSTACEA OF THE '' SKEAT EXPEPITTOX." 367 



long and slender, as long as antennular, iimcli longer than 

 antennal, jjeduncles. The antenna is very short, the peduncle 

 (armed with long haii's) a, little longer than half the eye, the 

 flagelluni only ovei'i'eaching the eye by hfdf its own length, thinly 

 ciliated. The antennal scale is a bi-oadish ovoid plate, fi'inged 

 with long haii'S, and falling short of the end of the antennal 

 peduncle by some little distance. 



The cheli pedes are subequal, the right being slightly the larger; 

 in other respects they are quite similai-. The whole leg is very 

 hairy, except on the inner surface, and a pai-t of the outer sur- 

 face, of the merus, the hair being very dense on the outer surfaces 

 of the carpus, hand, and fingers, .slightly less so on their inner 

 joints. In the merus, the outer surface bears a few separate 

 granules, the inner is smooth ; both lower and outer margins are 

 denticulate, the lower more distinctly so. The carpus carries a, 

 row of four large teeth on its upper margin, of which the 3rd, 

 counting proximo- distally, bears a secondary tooth at its base 

 internally ; on its outer surface is a row of 5-6 teeth of varying 

 size : between these two rows the carpus is somewhat hollowed 

 proximally, and distally it beai'S, close to the joint, a small patch 

 of low teeth. The hand is short and very swollen, especially on 

 its inner sui-face, not longer than the fingers ; its outei" surftice 

 and iipper and lower margins carry a few tubercular spines in 

 three ii-regular rows, the I'ow on the outer surface being the 

 least definite : the fingers are everywhei-e (except their inner 

 edges) covered with coarse, lai'ge granules, the tips corneous, 

 faintly excavate. The ambulatory legs are densely hairy on their 

 upper and lower margins, otherwise smooth ; the dactyli a little 

 longer than the penultimate joint. 



17. DioGEXES MiXTUS, sp. nov. (Plate XXXIY. figs. 2-2 b.) 



Loc. Pulaxi Bidan, Penang. Xiimei'ous examples from Xatica., 

 Mu7'ex, and other shells. 



Loc. Patani. One from J/nrex. 



This species is closely allied to JJ. viiles Fabr., JJ. laeryuiensis 

 de Man, and IJ. intermedins de Man ; and it has seemed to me 

 best to arrange the naain points in which these species agree or 

 differ in tabulai' form : — 



D. miles. U. merguiensis. JJ. intermedins. D. mi.rtus. 



a. Mertis of 3rd legs. 



Xnmerous large 8i)ines less iiume- Spines absent. As in .D. miles. 



spines on upper rous and smaller, 

 border. 



b. Outer surface of joints if'drd lei/s. 



Numerous small Less numerous, Scarcely granular. As in I>. inter- 

 piliferous sjr.an- larger, and more Merus nearly mediiis, but a row 



ules. pilit'prous g-ran- sniootb. of piliferous gran- 



ules, ules a little below 



the upper margin 

 of penultimate 

 ioint. 



