HYPOCTONUS. 



115 



90. Hypoctonus saxatilis, Oates, J. A. S. H. lviii. p. 17. L889 

 (Thelyphonus) ; Kraep. Abh. Ver. Hamb. xv, p. I-'. L897; .<■/. 

 Tierr.f Scorp. etcp. 232, L899 (Hypoctonus). 



d • Kesembling H. woodmasoni in colour, except that the legs 

 of the first pair are dark, the tarsi alone beini; yellowish red, and 

 the last abdominal sternum and the underside of the three caudal 

 segments arc also deep blackish brown in the adult. Granulation 

 of upper side as in preceding species ; sterna much more dis- 

 tinctly punctured: the 1st with the two shallow impressions deeper 

 than in II. woodmasoni and transversely striate. Trochanter of 

 chela weakly granular above as in //. binghami, obsoletely toothed 

 as in//, woodmasoni • femur, tibia, and hand sculptured, and tibial 

 apophysis as long as in the latter; posterior edge of apophysis 

 quite smooth and straight until reaching the extremity, where it is 

 Rlightly swollen and convex; anterior edge straight in the basal 

 two-thirds of its length, and furnished with about seven small 

 denticles, the distal third inflated but becoming narrower again at 

 the extremity, which is truncate and scarcely toothed ; hand more 

 strongly depressed at the base of the immovable finger than in 

 //. woodmasoni, its inner edge evenlv convex from base of finger 

 backwards and armed with small denticles in its distal half ; 

 immovable finger straight or lightly concave basally, convex 

 dist ally. 



$. Closely allied to that o\' II. woodmasoni, but with anterior 

 legs black, trochanter and femur ol' chela more granular above, 

 and the two impressions on the first abdominal sternum longer, 

 not circular but half-moon shaped or subcrescentic. 



Total length up to about ;tt mm., 5 : 25, tf . 



Loc. Upper Burma : Thayetmyo (Macdonald). 



97. Hypoctonus sylvaticus, Oates, J. A. S. B. Iviii, p. 18, 1889 



(Thelyphonus): ranpunensis, var. silvaticus, Kraep. Abh. Ver. 



Hamb. xv, p. 49, 1897; id. Tierr., Scorp. etc. p. 232, 1899 



(Hypoctonus). 



6. Colouring as in U. saxatilis, with anterior legs dark, but 

 with the upper and outer sides of the femora and trochanters of 

 the 2nd, 3rd, and 4th legs brown as in ff. oatesii. Chela with 

 upper and under side of femur scarcely granular, only punctured ; 

 tibial apophysis shaped somewhat as in //. saxatilis, but with the 

 anterior edge of the basal half with only about two small 

 denticles, and the apical expansion much larger and involving 

 more than the distal third of the apophysis, its thickness 

 equal to twice the thickness of the portion immediately behind 

 it; inner edge of hand with a much more strongly and Less 

 widely-rounded prominence in the middle of its length, and a 

 much stronger concavity at and behind the base of the immov- 

 able finger, the external edge of which has a more strongly 

 pronounced sigmoid curvature. In the form of the inner 

 tt\^r, of the hand. //. sylvaticus lies nearly midway between 



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