96 Mr. R. I. Pocock on Neoh'opical Scorpions. 



This species differs from B. bonariensis in very many 

 characters, e. g. in having finely granular sterna, smaller and 

 more oval stigmata, the fifth caudal segment with inferior 

 lateral denticulate keels, at least in the posterior two thirds of 

 the segment, &c. 



It further undoubtedly differs from Thorell's B. d' Orhignyi 

 (Guer.) in the keeling of the fifth caudal segment and in 

 having finely granular sterna. I am not confident that 

 Guerin's d' Orhignyi is the same as Thorell's. Guerin, how- 

 ever, describes his species as being lisse et luisant and as 

 having twenty-six pectinal teeth. In these two particulars 

 this form from Chili appears to differ from it. 



Bothriurus Keyserlinqii, sp. n. 

 (PI. V. figs. 9, 9 a.) 



Allied to B. bonariensis. 



Carojyace smooth above, very finely granular at the sides. 



Tergites very finely granular, the last more coarsely so. 



Tail like that of B. bonariensis for the most part, but slightly 

 less robust, with \\\q first segment furnished beneath ivith four 

 smooth and rather irregularly sharped keels^ and the posterior 

 segment coarsely granular in its posterior half, with the area 

 which is so clearly defined in B. bonariensis developed only as 

 in B. coriaceus. 



The palpi as in the female of B. bonariensis. 



The fifth sternite of the abdomen furnished with four smooth 

 heels. 



Length about 40 millim. 



A single dried (probably ? ) example in the late Count 

 Keyserling's collection, ticketed Chili or Peru. 



Most nearly related to B. coriaceus, which it resembles in 

 the structure of the fifth caudal segment, but easily to be 

 recognized by presence of four keels on the last abdominal 

 sternite and upon the first caudal segment. 



Bothriurus asper, sp. n. 

 (PI. V. fig. 10.) 



Young male. Colour fuscous, with a distinct median fulvous 

 dorsal band on the tergites; the legs, palpi, and lower surface 

 of the tail irregularly variegated with flavous spots and bands. 



Carapace finely and closely granular throughout, except 

 on the summit of tlie ocular tubercle, which is smooth and 

 polished ; this tubercle obscurely sulcate above ; the eyes large, 

 the distance between them being about equal to a diameter. 



