198 Mr. R. I. Pocock on 



Order SCORPIONES. 

 Opisthophthalmus pugnaXj Thor. 

 Opisthophthalmtis pugnax, Thor. Act. Soc. Ital. Sci. Nat. xix. p. 232. 

 Loc. Durban {Capt. Mumi) ; Estcourt, 4000 feet {O.A. K. 

 Marshall) . 



Opisth acanthus validus, Thorell. 



Opisthacanthus validus, Thor. Act. Soc. Ital. Sci. Nat, xix. p. 243. 



Loc. Newcastle, 4000 feet, Lower Umkomaas River, and 

 Isipingo {G. A. K. Marshall) ; Natal {E. Howhtt). 



Hadogenes pallidas^ sp. n. 



Colour. Trunk brownish above, terga blackish in front ; 

 tail yellowish brown, vesicle clear yellow ; legs yellow ; chelse 

 yellow, with digits and crests brownish. 



Carapace almost as long as the first and second caudal 

 segments, as long as the third and | of the fourth, a little 

 longer than movable digit and than hand-back. 



Tail short, considerably less than four times as long a.s 

 carapace; first segment scarcely keeled above; inferior keels 

 of second, third, and fourth denticulated, of fifth with about 

 15 or more teeth ; vesicle large, its height about one third 

 the length of the fourth caudal segment. 



Hands rather wide ; width of the upper surface much more 

 than half the length of the movable digit. 



Pectinal teeth 15. 



Measurements in millimetres. — Total length 74; length of 

 carapace 12 ; length of tail 40, of its fifth segment 7'5 ; width 

 of upperside of hand 6*8 ; length of movable digit 11. 



Loc. Junction of Blaauwkrantz and Tugela Rivers, Natal, 

 2500 feet, under stone {G. A. K. Marshall). 



Differing from //. trichinrus principally in its shorter tail 

 and wider hand ; trichiurus also has the legs and chelai deep 

 brown. 



Uroplectes formosus, Poc. 



Uropledes formosus, Poc. Proc. Zool. Soc. 1890, p. 134, pi. xiii. fig. 3 ; 

 Ann. & Mag. Nat. Hist. (6) xvii. pp. 383 and 390. 



Loc. Natal {E. Howlett) ; Lower Umkomaas River 

 i^G. A. K. Marshall). 



., Uroplectes Marshallij Poc. 



Uropledes Marshalli, Poc. Ann. & Mag. Nat. Hist. (6) xvii. p. 392. 

 Xoc. Durban and Tugela River [G. A. K. Marshall). 



