TJROCTONUS.— BROTEOCHACTAS. 15 





1. Uroctonus mordax. (Tab. IV. figg. 2, 2 a-f, 6 .) 



Uroctonus mordax, Thorell, Ann. & Mag. Nat. Hist. (4) xvii. p. 11 (1876) 1 ; Atti Soc. Ital. Sci. 



Nat. xix. p. 196 (1877) 2 ; Bull. Soc. Ent. Ital. xxv. p. 374 (1891) s ; Karsch, Mittheil. Munch, 

 ent. Ver. iii. p. 103 (1879) 4 ; Pocock, Ann. & Mag. Nat. Hist. (6) xii. p. 330, t. 14. fig. 15 

 (1893) 5 j Kraepelin, Jahrb. Hamb. Wiss. Anst. xi. p. 194 (1894) 6 ; Das Tierr., Scorpiones et 

 Pedipalpi, p. 182 (1899) \ 



c? . Colour a uniform deep brown, legs yellower, hands with a reddish tint. Carapace a little longer than the 

 first and second caudal segments and abont as long as the fifth, finely granular. Terga finely punctulate, 

 granular laterally and along the posterior border, the last granular throughout and furnished with four 

 granular crests. Sterna smooth, finely punctured, the last scarcely crested. Tail about four times as 

 long as carapace, slender, second segment a little longer than wide, fifth rather more than twice as long as 

 wide ; all the caudal keels present, but the median lateral absent on segments 2-4 and scarcely developed 

 on the first ; the inferior medians and laterals smooth or nearly so on segments 1 and 2, weakly granular 

 on the third, strongly granular on the fourth ; the intercarpal spaces almost smooth, finely granular ; fifth 

 segment finely granular, the inferior keels subdenticulate ; vesicle smooth, pyriform, a little wider than 

 high ; aculeus very lightly curved. Chelce finely granular, with strong granular crests • the braehium 

 with three strong teeth in front ; upperside of hand with a network of fine granules, with a strong 

 external finger-keel separating the horizontal inner from the vertical outer portion of the upper surface ; 

 width of the hand a little less than the length of the underhand, which is about equal to that of the 

 movable finger, the latter not lobate. Legs with granular femora. Pectinal teeth 10-12. 



$ . Differing from male in having the hand smooth and the strong finger-keel absent. Pectines with 8 teeth. 

 Measurements in mm. — cS . Total length 42, carapace 6, tail 23*5 ; width of first segment 2-5, of fifth 1*8, 

 length of latter 5*5 ; length of braehium 5, width 2 ; width of hand 4; length of underhand 5, of movable 

 finger 5*8. 



Ilab. North America, San Francisco, California. — Guatemala 3 . 



The above-given description is based upon a male example from California in the 

 British Museum, the only example available for the purpose. The characters of the 

 female are taken from Kraepelin's monograph. According to this author the specimens 

 of this species reach a length of 60 mm. 



BROTEOCHACTAS. 



Ma 



xxiv. p. 399 (1893) ; Kraepelin, Jahrb. Hamb. Wis 

 ' Tierr., Scorpiones et Pedipalpi, p. 172 (1899). 



Das 



Anterior border of carapace lightly depressed mesially, but not excised. Two lateral eyes on each side. 

 Mandible with fingers not toothed inferiorly. Chelce with a single row of teeth along the middle line 

 and flanked internally by: a few larger lateral teeth. Sternum wider than long. Pectines with shaft 

 segmented, and small triangular fulcra. Tarsi furnished beneath with somewhat irregularly-arranged setoe, 

 without median row of spicules. Tail smooth below anteriorly or with paired keels. Stigmata oval. 



Type B. golhneri, Karsch. - 



Distribution. S. America as far south as the Amazons : Panama. 



l. Broteochactas delicatus. (Tab. IV. figg. 3, q a-f, $.; 4, 4«, b 



M 



»' 



Broteochactas delicatus, Pocock, Joum. Linn. Soc, Zool. xxiv. p. 401 (1893) 2 ; Kraepelin,. Jahrb, 



Hamb. Wiss. Anst. xi. p. 77 (1891) 3 ; Das Tierr., Scorpiones et Pedipalpi, p. 174 (1899) \ 



