and 3, represented by a few granules on the 4th ; all the keels 

 granular, the inferior medians on the 1st and 2nd segments almost 

 smooth ; intervening spaces of segments weakly granular, granules 

 on the lower surface of 5th forming two subsidiary crests ; vesicle 

 globular, wider than high, granular below. Chela; (in $ ) long ; 

 humerus as long as carapace ; brachium three times as long as 

 wide, with two superior crests well developed and granular, upper 

 crest of posterior surface also present ; hand long and wide, much 

 wider than brachium, smooth and punctured, its width about 

 two-thirds the length of the underhand, the latter about two- 

 thirds the length of the movable digit ; digits separated at the 

 base, lobate and sinuate, furnished with 14-15 rows of teeth. 

 Leys with granularly crested femora ; tarsi with two rows of 

 black epinules beneath. Pectinal teeth 29. 



Measurements in mm. Total length 81, carapace 9, tail 52'5, 

 length of movable digit 12, width of hand 4*8, of brachium 4*5. 



Loc. Chitral in the Hindu Kush, 5000 ft. (Tounghusband). 



Subspecies penjabensis, Simla, Ann. Mus. St. Petersb. ii, p. 382, 1897 ; 

 Kraep. Tierr., Scorp. etc. p. 21, 1899 (B. alticola penjabensis). 



Described as differing from the typical form in having the tail 

 not more than five times as long as the carapace ; with the 1st, 

 2nd, and 3rd segments convex at the sides, the 1st segment by 

 one-half wider than long, the 4th only by half longer than 

 wide ; the hand narrower than the brachium, with the underhand 

 scarcely half the length of the movable digit, and the humerus 

 shorter than the carapace. Pectinal teeth 24-25. 



Measurements in mm. Total length 86-5, carapace 9. 



Loc. Punjab. 



The diagnostic characters of this subspecies may prove to have 

 nothing but a sexual significance, the only known example of 

 B. penjabensis being a female, and the type of B. alticola a male. 



8. Bu.th.us mgrifrons, sp. n. 



$ . Colour : anterior portion of carapace and median area of 

 posterior portion blackish, median portion of anterior six terga 

 also blackish, lateral portion of carapace and anterior terga and the 

 whole of the 7th tergum yellowish ; caudal segments 13 and 

 anterior end of 4th yellow, posterior half of 4th, the whole of the 

 5th, and the vesicle deep brown ; mandibles deep brown ; hand 

 and fingers of chelse, with the exception of the yellow tips of the 

 latter, black ; ventral surface and legs entirely yellow. Carapace 

 crested as in B. alticola, but with the intercarinal spaces almost 

 entirely smooth ; longer than the 4th and nearly as long as the 

 ]st and half the 2nd caudal segments. Terya with the crests 

 granular but scarcely spiniform posteriorly ; area between them 

 smooth; sides of terga sparsely granular; intercarinal spaces of 7th 

 smooth. Sterna smooth, the last with four granular crests. Tail 



