198 Mr. R. I. Pocock on 



Order SCORPIONES. 



Opisthophthalmus pugnax 7 Thor. 



Opisthophthalmus pwjnax, Thor. Act. Soc. Ital. Sci. Nat. xix. p. 232. 



Loc. Durban {Capt. Munn) ; Estcourt, 4000 feet (G. A. K. 

 Marshall) . 



pisthacanthus vaUdus, 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. Howlett). 



Hadogenes pallidus, sp. n. 



Colour. Trunk brownish above, terga blackish in front ; 

 tail yellowish brown, vesicle clear yellow ; legs yellow ; chela? 

 yellow, with digits and crests brownish. 



Carapace almost as long as the first and second caudal 

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

 longer than movable digit and than hand-back. 



Tail short, considerably less than four times as long as 

 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. 



Bands 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 G'8 ; length of movable digit 11. 



Loc. Junction of Blaauwkrantz and Tugela Rivers, Natal, 

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



Differing from H. trichiurus principally in its shorter tail 

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

 brown. 



Uroplectes formosus, Poc. 



Uroplectes 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 

 (G. A. K. Marshall). 



Uroplectes Afarshalli } Poc. 

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

 Loc. Durban and Tugela River (G. A. K. Marshall). 



