of tJie Genus Yddio\\?i. 397 



segment forming a weakly crenulate ridge; lower surface of 

 fifth sparsely granular, lateral intercarinal spaces of segments 

 1 to 4 practically smooth ; vesicle smooth, punctured. 



Cfielce: the posterior crests on brachium developed, but 

 smooth ; hand wide, entirely smooth, punctured, and scarcely 

 visibly crested; the width about two thirds the length of the 

 hand-back, which is almost as long as the movable digit, the 

 latter about as long as the fourth caudal segment. 



Pectinal teeth 1 8. 



$ . — Resembling the male, but less granular, the anteocular 

 area being nearly smooth ; tail shorter ; hand narrower, its 

 width about half the length of the movable digit. 



Pectinal teeth 16-17. 



Measurements in millimetres. — ^J . Total length ol"5 ; 

 length of carapace 5*5, tail 31 ; width of hand 3 ; length of 

 movable finger 4-5. $ . Total length 52 ; length of carapace 

 6, tail 29 ; width of hand 2'8; length of movable digit 5 



Log. St. Andres, Mexico. In the collection of Count 

 Keyserling. 



Differs from the species belonging to the V. mexicanus 

 section in having the four inferior caudal keels smooth, also 

 the hand in both sexes entirely smooth and keelless. 



Vcejovis cristimanus, sp. n. 



2 . — Colour a uniform reddish brown, not variegated ; legs 

 yellower. 



Closely allied to V. subcristatus, but, apart from the colour- 

 differences, recognizable by having the palpi more strongly 

 crested, the posterior surface of the brachium being weakly 

 granular and its inferior crest distinctly crenulate ; the hand 

 is also distinctly crested, the crests on its inner surface being 

 granular. 



Terga visibly tricostate ; upper surface of fifth caudal 

 segment smooth ; superior and supero-lateral crest on the 

 fifth segment granular; vesicle granular below and more 

 coarsely punctured. 



Pectinal teeth 18-19. 



Measurements in millimetres. — Total length 63 ; length of 

 carapace 7'3, tail 36. 



Loc. Zacatecas, Mexico (85. 40) . 



Vo'jovis crassimanus, sp. n. 

 (J. — Colour a tolerably uniform palish yellow, lightly 

 infuscate in parts ; an indistinct fuscous patch on each side 

 of the middle line on the tergite. 



Trunk coarsely granular above ; smooth below, except for 

 Ann. dc Mag. N. Hist. Ser. 7. Vol. i. 30 



