422 On new Scorpions from Ecuador. 



Teuthraustes nitescens, sp. n. (Fig. 4.) 



Colour as in the above. 



Closely allied to T. monticola^ from which it scarcely 

 differs in any characters other than those enumerated in the 

 table. 



Total length 63 millim. ; length of carapace 8, of tail 32 ; 

 width of first segment 4*3, of vesicle 3*5 ; width of hand 6 ; 

 length of movable digit 7*5. 



hoc. Cachavi, in Ecuador {Rosenberg coll.). 



The species of this genus known to me may be recognized 

 as follows : — 



a. Hand very wide, its width exceeding the 



length of the movable digit ; digits short, 

 the immovable triangular, its basal width 



nearly equal to its length latimanus, sp. n., cf . 



(Corazon, 12,000 feet.) 



b. Hand narrower, its width less than length 



of movable digit ; digits longer, basal width 

 of the immovable only about half its length. 

 a^. More coarsely gi-anular, the anteocular 

 portion of carapace and the portion of 

 the postocular area on each side of the 

 median groove coarsely granular ; last 

 stemite mesially granular; first caudal 

 segment with a pair of median granular 

 keels ; vesicle considerably more globular, monticola, sp. n. 



(Machachi,9000-10,000 ft.) 

 b^. Less granular, anteocular portion of cara- 

 pace and its posterior median area nearly 

 smooth ; last sternite almost smooth in 

 the middle ; vesicle narrower, more 



elhptical nitescens, sp. n. 



(Cachavi, 500 ft.) 



Judging by the figures published by Becker of the two 

 previously described species of this genus, namely T. atra- 

 mentarius, Sim. (Ann. Soc. Ent. France, 1878, p. 400), from 

 Quito, and of T. ecuadorensi's, Becker (Ann. Soc. Ent. Belg. 

 xxiv. p. 142, 1880), from Pensagui, Imbabura, 8000 feet, 

 these two species fall under the heading b of the above table. 

 Again, according to Becker's description, the tergal plates of 

 the abdomen in atramentarius and ecuadorensis are " finement 

 pointings," and not " granuleux." If there is no error of 

 observation involved in this statement, the two species are 

 quite distinct from the forms described by me. Moreover, 

 ecuadorensis appears further to differ from atramentarius in 

 having the legs red instead of black, and the lower surface of 

 the vesicle granular instead of punctured. 



