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28 



SCOEPIONES. 



















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gment, half the length of 



the sum of the first 













more 







one- 











seventh the length of the tail, the superior keel on the hand practically smooth,, &c. 



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i/rff, p. 32, where 0. granosus, Thor., is further discussed) 



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7. Centruroides nitidus. (Tab. VI. figg. 5, 5 «, b, 2 









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Centrums nitidus, Thorell, Atti Soc. Ital. Sci. Nat. xix. p. 152 (1877) x ; Kraepelin, Jahrb. Hamb. 





Wiss _______ x _ x / _ _ 



Centrums tenuis, Thorell, loc. cit. p. 153 

 Centrums republicanus , Karsch, Mittheil 



(1893) 



4 



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120 (1879) 





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» 



2 . Colour much as in C. elegans, the terga with a pair of black bands as in that species ; the carapace not banded 



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wi 



t 





1 . * ■•;.'. 



sometimes failing on the first and fifth, more rarely on the fourth segment; chelae and legs uniformly 

 yellowish-brown, but the fingers black, at least in the basal half, where they are much darker than the 

 hand. Upperside of trunk finely and closely granular, studded with coarser granulation, the terga 

 without lateral granular crests. Sterna as in 0. elegans, the third and fourth finely coriaceous, the 

 fourth with scarcely a trace of crests. Tail parallel-sided, more than four times as long as carapace, 

 the first segment as wide as the fifth, the third as long as the carapace, the fourth slightly longer, the 

 intercarinal spaces finely granular or almost smooth, the sides of the segments more convex than in 

 C. elegans ; the fifth segment as high as wide, scarcely twice as wide as long ; vesicle almost as high as 

 wide, without a spine beneath the aculeus. Chelae finely granular, with coarsely granular crests on 

 humerus and brachium ; the latter thicker than in C. infamatus, its width much more than one-third, 

 nearly one-half, of its length ; hand also very broad, its width about half the length of the movable finger, 

 the keels on its upperside strong but smooth ; movable finger with eight rows of teeth, barely one-third 

 longer than the length of the underhand. Pectinal teeth 17-21. 

 c? . Coloured like the female. Tail from seven and a half to eight times the length of the carapace, parallel- 

 sided or slightly expanded posteriorly, the fifth segment from two and a half to over three times as long 



as 



wide. Hands 



Pectinal teeth 



up to 25. 



Meas 



'-- 



n 



$ . Total length 62, carapace 6, tail 37 ; width of hand 3-5, of brachium 2-5 ; length 

 of underhand 5, of movable finger 6-8. 6 . Total length 68, carapace 6, tail 49 ; width of hand 3, of 

 brachium 2*2 ; length of underhand 5*5, of movable finger 7. 



Hah. Mexico, Vera Cruz 



■Antilles, Haiti 



1-5 



Puerto Rico 



The original examples of C. nitidus, C. 



v 



and C. republicanus were from Haiti 







whence the British Museum also has specimens of the species. The British Museum 

 has additional examples ticketed "Brazil," a locality which is perhaps erroneous. The 



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description here given has been taken from these specimens, 



8. Centruroides flavopictus. (Tab. VI figg. 6, Qa-d, s $ .) 



Centrums flavopictus, Pocock, Ann. & Mag. Nj 

 Tierr., Scorpiones et Pedipalpi, p. 94 (1899) 



Hist. (7) i. p. 387 (1898) l ; Kraepelin, Das 





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2 . Colour ; upperside of trunk blackish or yellowish-brown, the last tergite paler, the others with a narrow 

 median yellow stripe or spot and a marginal spot on each side ; tail reddish-brown, deep blackish-brown 

 beneath at its posterior end, vesicle paler than fifth segment ; chelae pale at base, humerus and brachium 

 especially the brachium, stained with brown ; hands yellowish-red, much lighter in colour than the 

 brachium ; fingers black, much blacker than the hand, with pale tips. Legs yellow. Carapace and terga 

 relatively finely granular, the former without serial arrangement of granules, the latter without a trace of 

 lateral keels, except on the fifth and sixth plates ; fourth sternal plate mesially carinate ; fifth coriaceous 

 finely granular laterally, the keels granular or crenulate. Tail about five and a half times as long as 



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L x 







