PALAMX.EUS. 97 



82. Palamnaeus serratus, sp. n. : Scorpio csesar, Pocotk, A. M. N. H. 



(6) xiii, p. 73, 1894 (nee Buthus cassar, C. Koch, Rraepeliri). 



3 . Colour as in the preceding, to which it is nearly allied. 

 Carapace and ierga more coarsely granular laterally. Superior and 

 supero-lateral crests of tail strongly denticulate ; lateral surface of 

 segments sparsely granular, upper side of 4th segment with some 

 coarse granules, of 5th with many large granules on the anterior 

 half on each side of the median silicas. Chelce, with hand orna- 

 mented above as in P. Indus, the inner border more strongly convex, 

 forming anteriorly with the base of the immovable finger an angle 

 much less obtuse than in that species, the denticles of the inner 

 border running right up to the base of the immovable finger, the 

 edge of which is at least as thick as in P. indus ; the underhand 

 reticulated and furnished with a few large granules ; keel on 

 immovable finger complete as in P. indus. Pectines practicallv as 

 in P. indus. Tarsal spine-armature 6 or 5 behind, 4 in front. 



Measurements in mm. J Total length 125, carapace 18, tail 

 64, brachium 15, underhand 12 - 5, movable finger 19, width of 

 hand 17. 



Loc. Ceylon. 



83. Palamnaeus caesar, C. Koch, Arachn. ix. p. 6, fig. 697, 1842 



(Buthus) ; Kraep. Tierr., Scorp. etc. p. 114, 1899 (Heterometrus). 



According to Kraepelin's description this species differs from 

 P. serratus in having the frontal lobes of the carapace thickly 

 granular or tubercular ; the inner edge of the hand forms a well 

 rounded arch where it passes into the immovable finger, which is 

 very flat, wide, and has a sharp, smooth, not swollen border ; the 

 keel on its upper side is weak and becomes obsolete in the middle ; 

 the underhand is beset with conspicuous isolated tubercles ; 

 the tarsi are armed beneath with 5 or 6 spines behind, 3 in front. 

 Pectinal teeth 12-16. 



Loc. Ceylon. 



84. Palamnseus longitnanus, Hei'bst, Nat. ungefl. Ins, iv, p. 42, pi. ii, 



fig. 1, 1800 (Scorpio) ; Kraep. Tierr., Scorp. dr. p. Ill, 1899, in 

 part (Heterometrus) : bengalensis, Simon, Ann. Mvs. Genov. xx, 

 p. 360, 1884 (nee Buthus bengalensis, C. Koch, 1842) : petersij, 

 Thorell, Ann. Mus. Geiiova, (2) vii, p. 588, 1889 (nee petersii, Thor. 

 1876 & 1877) : thorelli, Pocock, A. M. N. H. (6) ix, p. 40, 1892 

 ( Palamnaeus). 



$ . Colour a uniform black or deep blackish brown, reddish brown 

 below and on the hands and vesicle. Carapace granular at the 

 sides and on the frontal lobes, smooth or obsol^tely granular above, 

 differing from all the foregoing species in having the depression on 

 each side of the median ocular tubercle continuous posteriorly with 

 the postero-lateral sulcus of the carapace ; a little longer than the 

 3rd and 4th caudal segments. Terga weakly granular at the sides ; 



