STYGOPHRYNUS. 



120 



0. 



Fig. 43. Sarax sarawakensis. 



A. Lower side of cephalothorax and of anterior end of abdomen : a, prosternal, 



b, c, inesosternal, and d, metasternal plates ; e, 1st, and /, 2nd abdo- 

 minal sternum ; g & h, apertures of pulmonary sacs ; i, coxa of 4th, 

 k, coxa of 3rd, I, coxa of 2nd leg ; m, coxa of chela. 



B. Tarsus of 4th leg : o, claws ; n, pulvillus. 



C. Upper view of extremity of tarsus : q, claw ; p, pulvillus. 



Genus STYGOPHRYNUS, Kraepelin. 



Charon, Thorell, Ann. Mm. Genova, xxvii, p. 538, 1889 (not Charon 



of Karsch). 

 Stygophrynus, Kraepelin, Abh. Ver. Hamb, xiii, p. 44, 1895; id. 



Tierr., Scorp. etc. p. 248, 1889. 



Only one long spine on the upper and lower side of the hand, 

 but the spine on the upper side with a slender supplementary spine 

 rising from the base of its posterior surface ; distal to the long 

 spine, both above and below, are a few, about three, small spines. 

 Claw not fused with finger, but separated by a distinct sutural 

 joint. Tibia of chela moderately wide ; its upper edge furnished 

 with seven spines, of which the 4th, 5th, and 6th from the distal 

 end are subequal, very long and slender and longer than the width 

 of the tibia (fig. 44 A, B). Tibia of 4th ley consisting of four 

 segments. Second abdominal sternum with distinct semicircular 

 lobes. 



Type (and only known species), S. cavemicola. 



Distribution. Burma. 



