528 MB. E. I. POCOCK ON THE 



only a trifle greater than half the median length 

 ot the carapace^ the anterior margin of which is 

 more coarsely dentate laterally than mesially. 

 Median ocular tubercle close to the anterior edge. 

 Mandibles with an enlarged terminal tubercle, 

 fl^. The six spines on the tarsus of the chela well 

 developed; frontal process almost concealed. 

 a^. Legs exceedingly long, femur of the 1st more 

 than twice, and tibia of 2nd equal to twice, 

 the width of the carapace ; 2nd tibial of 4th 

 leg as long as the distance between the eyes. . longipes. 

 b^. Legs shorter, femur of first and a fortiori tibia 

 of 2nd less than twice the width of the 

 carapace; 2nd tibial of 4th leg shorter than 



distance between the eyes spinimana. 



V^. The 1st and 3rd spines on the lower edge of the 

 tarsus of the chela nearly obsolete ; apex of the 

 frontal process projecting forwards between the 



mandibles tessellata. 



b^. Tibia of chelae stouter, spines shorter, none of them 



being so long as the segment is thick ; the 1st and 



3rd inferior spines on the tarsus of the chela nearly 



obsolete, 



a*. Distance between the lateral eyes about half the 



median length of the carapace or less ; the (Blanch.), 



lateral teeth of its anterior border enlarged .... Pallasii 

 b*. Distance between the eyes noticeably greater than 

 half the median length of the carapace, 

 fl'. Distance between the median ocular tubercle 

 and the anterior edge equal to about twice a 

 diameter ; the 1st spine oa the upperside of the 

 tarsus of the chela nearly obsolete ; frontal 

 process concealed. 

 a^. Eyes less widely separated ; frontal border 

 narrower and more coarsely dentate ; with 



8 superior sjjines on the tibia Keyserlingii. 



b^. Eyes more widely separated ; frontal border 

 wider and more finely dentate, with 7 



superior spines on the tibia latifrons. 



b^ , Distance between the median tubercle and the 

 anterior border less than a diameter ; 1st 

 superior tarsal spine of chela longer ; frontal 

 process not concealed barbadensis. 



