218 Mr. S. Ilii.st on Scorpions and Sulifugcn a vaiiety of the latter. I think J;hat it is utidoubtedly more closely allied to B. emini tiian \.o B.minaxhni that it should be regarded as a distinct species and not merely as a variety. The male can be readily distinguished from that o£ B. emini by its much narrower hand, which is only slightly broader than the brachium, and longer and more slender fingers ; moreover, the movable finger has only a very slight low lobation, and the immovable finger is without any definite lobe. Tiie hand and fingers, indeed, are very similar in shape in both sexes in B. polystictus and resemble closely those of the female of B. emini. In the male of B. emini, however, the hand is very much broader than the brachium, and the fingers are very different in shape to those of the female ; they are shorter and stouter, and both the movable one and the immovable one in the adult are furnished with very distinct lobes, that of the immovable finger being especially strong. In addition to the specimens of iy.jyo/ystictus determined by Mr. Pocock, I have examined sixteen males and forty-three females and young from Berbera, and eleven males and twenty-lwo females from the Wagar Mountains behind Berbera; these specimens were collected by Mr. G. W. Bury.]

Buthus quinquestriotus, H. & E.

Loc. Oaptain Flower collected examples of this wellknown species at VVady Haifa, Khartoum, and the Blue Nile.

[A specimen of the following species from the Sudan has been acquired by the Trustees of the British Museum.]

Parahuthus liosoma hunteri, Poc.

Paruhuthus hunteri, Poc. J. Linn. Soc, Zool. xxv. p. 309 (1895).

Additional Loc. Omdurman, Sudan. A large male example collected by Capt. H. N. Dunn, R.A.M.C.

Measure-merits of this specimen in mm.—Total length 99 length of carapace ll'b, of fifth caudal segment 12'5; widtli of fifth caudal segment 7*25. Remarks.—This scorpion was described from specimens obtained at Duroor and Suakin. As pointed out by Mr. Pocock, it can be distinguished from Parahuthus liosoma [typical form] by the greater slenderness of the tail and by tlie presence ot a basal tubercle on the fingers of the hand, &c. It must be noted, however, that the width of the tail varies somewhat even in specimens from the same locality.