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SCORPIONES. 



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posteriorly with a row of about 9 setiferous pores. Pectines with the intermediate lamella normally 



separated. Tarsi furnished with a median row of spicules and lateral seta ; a distinct inferior median 



• claw. Stigmata long and slit-like. Tail with the fourth segment keelless below. ■ Dorsal half of the 



aculeus spherically swollen in the male. 



Type and only known species A. phmdactylus (Wood). 





Distrib 



Southern States of North America; Guatemala (sec. Thorell) 



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l. Anuroctonus phseodactylus. (Tab. III. figg. 4 



e< 2 



Tab. IV. figg. 1 





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C, 6 .) 



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Wood 



Uroctonus phaeodactylus , 



Mittheil. M 



ad. (2) T. p. 372 \ 

 Kraepelin, Jahrb. 



Wis 



d. p. 196 (1894) 

 Anuroctonus phaodactylus, Pocock, Ann. 



Mag. Nat. Hist. (6) xii. p. 328, t. 14 figg. 14, 14«-c 



(1893) 



Kraepelin, Das Tierr., Scorpiones et Pedipalpi, p. 183, fig. 58 (1899) 



6 



Oncocentrus phaodactylus, Thorell, Bull. Soc. Eat. Ital. xxv. p. 375 (1894) . 



cJ . Colour reddish or yellowish-brown, the tergite darker ; chelae and legs yellower, the fingers infuscate, a 

 dark spot at distal end of hrachium above ; legs yellow, with a dark spot at the distal end of the femur 

 and patella ; caudal segments darker beneath posteriorly. Carapace smooth, granular on frontal lobes 



Terga 



anteriorly and on the sides, a little longer than caudal segments 1+2+i of 3 and as 3 + 4. 

 shagreened and granular. Sterna smooth, the last with four strong granular keels. Tail about three 

 and a half times as long as the carapace, the superior and superior lateral keels weakly granular, the four 

 inferior strong and tubercular on segments 1-3, weak on segment 4 ; fifth with 3 strong inferior keels ; 

 vesicle almost smooth, compressed, inflated, as high as wide. Chela large ; humerus finely granular, with 

 strong granular crests ; hrachium almost smooth, with strong anterior granular crest and a strong tooth 

 on the anterior surface ; hands smooth and punctured, a single weak keel above, its width about three- 

 fourths the length of the movable finger, which is shorter than the carapace and as long as the underhand. 



Pectinal teeth 8-10. 

 2 . Like the male, but smoother, with smaller pectines and 5-6 teeth. 

 Measurements in mm.— 8 . Total length 67, carapace 11, tail 37. $ . Total length 74, carapace 11*5, tail 35. 



' Hab. North America, California, Utah, Virginia, and Colorado. — Guatemala 7 . 





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and the figures on Tabb. III. and IV. are taken from two 



specimens 



British Museum 



male from San Bernardino in Califor 



and 



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the female from Denver in Colorad 



UROCTONUS 





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Ma 



(4) xvii. p. 11 (1876); Atti Soc. Ital. Sci. Nat. xix. 



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p. 19G (1877) ; Bull. Soc. 



Mittheil 





m. p 



Ma 



j. Nat. Hist. (6) xii. p. 328 (1893) ; Kraepelin, Jahrb. 

 Hainb. Wiss. Anst. xi. p. 193 (1894) ; Das Tierr., Scorpiones et Pedipalpi, p. 182 (1899). 



Allied to Anuroctonus, but with the movable finger of the mandible furnished below with 5 small but distinct 

 teeth. Brachium of the chelce supplied beneath with only a few (3 or 4) setiferous pores. Intermediate 

 lamellae of the pectines distally breaking up into about 6 subequal subspherical sclerites. Stigmata short 

 and suboval. Tail with its fourth segment granularly keeled below. Last abdominal sternum scarcely 

 visibly keeled. Basal half of aculeus not globularly*swollen in male. 



Type and only known species U. mordaoc. Thor. 



Distribution. Califor 



Guatemala (sec. Thorell) 



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