Scorpions of the Genus Titjus. 519 



T. magnimanus that I have seen, this species will fall under 

 section V of the above table, though differing from trinitatis 

 in being less coarsely granular on the sterna and tail. 



Tityus atriventer, sp. n. 



Colour deep reddish yellow, thickly variegated with black 

 on the trunk, limbs, and tail ; abdominal sterna, as well as 

 the cox£e and maxillary lobes of the- ceplialothorax, also 

 marked with black patches ; patches on the hands arranged 

 in black lines. 



Trunk granular throughout above ; abdominal sterna also 

 granular. 



Tail nearly six times the length of the carapace, parallel- 

 sided in female, posteriorly incrassate in male, the fifth 

 segment being wider than the first ; the median lateral keel 

 weak on the second segment ; the keels weak, weakly 

 granular, the terminal granule on the upper keel of the 

 second and third segments larger than the rest, the inter- 

 carinal spaces of the tail obsoletely granular ; vesicle weakly 

 granular, the spine beneath the aculeus slender and pointed, 

 not blade-like as in some allied species. 



Chelce weakly granular, the crests moderately strong ; 

 hands in female a little wider than brachium, in male much 

 wider, the hand-keels strong, obsoletely granular ; digits with 

 13-14 rows of teeth, rather strongly lobate and sinuate in 

 the male. 



Pectinal teeth 14-15 in female, 15-16 in male. 



Measurements in millimetres, — $ . Total lengtli 38 ; length 

 of carapace 4"o, of tail 24, width of its first segment and of 

 fifth 2*3 ; width of brachium 2, of hand 2*2 ; length of 

 movable digit 5. 



(J. Total length 32; length of carapace 3*5, of tail 21, 

 width of its first segment 1'8, of its fifth 2*2 ; width of 

 brachium 1 '5, of hand 2*3 ; length of movable digit 4. 



Loc. Balthazar in Grenada (Antilles). Two specimens 

 captured by Mr. H. H. Smith at an altitude of 250-300 feet 

 under rotting leaves and the bark of a rotten log. 



These specimens were received too late for notice in my 

 paper upon the West-Indian Scorpions published in Journ. 

 Linn. Soc, Zool. xxiv. pp. 374-409 (1894). It may be added, 

 however, that the female differs from the female of all the 

 species there recorded in having no lobate exj)ansion at the 

 base of the pectines ; but, tested by tiie characters used in the 

 table on p. 377, this new species tails alongside of T. melano- 

 stictus under section a^. But from the latter it may be at 



