from the Anglo- Egyptian Sudan. 219 The example from Omdurman has a more slender tail than any of the original specimens.

Pandinns exitiaUs, Poc.

Scorpio exitialis, Poc. Ann. & Mag. Nat. Hist. (6) ii. p. 249 (1888). Pandinus exitialis, Krpln. Uas Tierr. Scorp. &c. p. 119 (1899); Krpln.

Zool. Jahrb. (Syst.) xviii. p. 567 (1903).

Loc. Abu Haraz, Blue Nile [Capt. S. S. Flower) ; a small male example measuring d)5 mm. in length.

Remarks.—This example from the Blue Nile is a slight variety of P. exitialis. The granulation of the under surface of the humerus of the palp is very weak, except at tiie edges. Four complete keels and a short inner keel are present on the dorsal surface of the hand, and the tubercles are confluent in places, but not nearly to the same extent as in tlie variety, which I describe below under the name sudanicus.

In his account of P. exitialis, Mr. Pocock says that there is a single dry specimen from Schoa in the British Museum collection. There are present, however, in the collection, three dry examples (co- types) of this species, all of which were collected by Sir \V. C. Harris at Schoa. Four complete keels are distinctly visible on the hand of one of these specimens, and traces of these keels can be seen in the other two and in the variety from Gebel Mel.

[Var. sudanicus, var. nov.

This variety may be compared with the typical form of the species (from Schoa) as follows :—Dorsal surface of the hand much smoother, nearly the entire surface of the lobe being furnished with low anastomosing ridges instead of isolated tubercles (these ridges are smaller and narrower than those of P. gregoryi, and they are finely, but distinctly, punctured as in that species) ; the keels on the under surface of the hand are more sparsely and weakly granular than in the typical form. Proximal half of the under side of the humerus granular as in the typical form. Tarsal lobes of posterior legs with three spines, which are arranged in the same way as in the typical P. exitialis; the total number of spines on the anterior side of the tarsus is four, and the total number on the posterior side six or seven. Pectinal teeth twenty-one or t\\ enty-two in number. Last abdominal sternite without any trace of keels.

Measuremtnts in mm.—Total length 111 ; length of carapace 18.

Loc. Gebel Mel, 12 miles south of Obeid, Sudan ; a single female example captured by Capt. H. N. Dunn, R.A.M.C]