LYCHAS. 39" 



mandibles black ; tail spotted and lined with black, sterna marbled 

 with black; legs black and yellow ; chelie with humerus black and 

 yellow, brachium entirely black ; hand and fingers yellow, with a 

 few spots of black on the outer surface of the hands. Carapace 

 and terga evenly granular throughout ; the latter with a single 

 median crest; sterna smooth, the last granular and furnished with 

 four keels. Tail about five times as long as the carapace, 1st 

 segment as wide as long, 4th twice as long as wide, intercarpal 

 spaces granular, keels strong and granular; terminal granule of' 

 the upper keels of the 3rd and 4th segments, and in a lesser degree 

 of the 1st and 2nd, spheriform but small, median lateral crest absent 

 on the 3rd, weak and anteriorly abbreviated on the 2nd ; vesicle 

 coarsely granular below. Chehp with hand slender, narrower than 

 brachium ; underhand less than half the length of movable finger, 

 which is longer than the carapace and furnished with 6 rows of 

 teeth as in mueronatus. Tibial spurs short. Pectinal teeth 15-16. 

 Sternum with shallow indentation along middle line. 



Measurements in mm. — Total length 37, carapace 4, tail 21. 

 movable finger 4-3. 



Loc. Western Himalaya. Dehra Dun, 8000 ft. (Gleadow). 



25. Lychas rugosus, Pocock, Jour. Bom. N. H. Soc. xi, p. Ill, 1897 ; 

 Kraep. Tierr., iS,-nrji. etc. p. 48, 1899 (Archisoinetrus). 



Colour black, varied wit h yellow ; frontal region of carapace black ; 

 terga with four yellow marginal spots, an anterior median yellow 

 patch, yellow x-shaped marks, and submarginal yellow band: 

 t ail yellow, marked with black lines which posteriorly fuse 

 together; humerus and brachium black, spotted with yellow; 

 hand clear yellow ; fingers black with yellowish tips ; legs yellow 

 banded with black; sterna pale, the 4th with a few spots on its 

 posterior border, the last indistinctly lined with black. Carapace 

 and terga much more coarsely granular than in the other species, 

 carapace almost as long as the 1st and 2nd caudal segments, or as 

 the 5th. Terga without lateral keels. Sterna coriaceous, 3rd and 

 4th distinctly granular throughout ; the last with 4 granular crests. 

 Tail short and slender, about four and a half times as long as the 

 carapace: 1st. 2nd. and 3rd segments with median lateral keel 

 complete ; the intercarinal spaces granular, the keels strong and 

 granular, the superior subspiniform apically ; 1st segment about 

 as wide as long, 4th scarcely twice as long as wide ; vesiclt smooth 

 below. Chela with hand about as wide as brachium. smooth: 

 movable digit not twice as long as the underhand, shorter than 

 the carapace, armed with 8 rows of teeth, basal row quite short. 

 Tibial spurs short. Pectinal teeth 12. Tarsi with two rows of 

 bristles beneath. 



Measurements in mm. — Total length 22, carapace 2*8, tail 12. 

 movable finger 2*5. 



Lor. Eaipur, Central Provinces (Phipson). 



