464 Mr. S. Hirst on new Scorpions. 



Jjcgs. — Fine keels are present on the segments of tlie legs, 

 tlio?e on the patellae are the strongest. 



Pectines with fifteen teeth on one side and sixteen on the 

 other. 



Measurements in mm. — Total length 30; length of cara- 

 pace 3*5, of tail 17"5 ; width of first segment of tail 2*75, of 

 last segment 2*25. 



Colour. — Carapace fuscous, but with some small yellowish 

 patches ; the lateral margins and the posterior grooves 

 yellowish. Abdominal tergites fuscous, and each of them is 

 marked with a pair of yellowish almost pyriform spots, one 

 on each side of the dark median keel ; lateral margins of 

 tergites also yellow. Tail yellowish, but slightly darkened 

 in places ; the fifth segment more deeply infuscate, especially 

 below ; lateral caudal keels mostly slightly darkened and 

 the ventral keels very dark in segments 2-5. Vesicle yellow, 

 with a very fine dark median line below and minute dark 

 lateral patches; the apical half of the sting black. Ap- 

 pendages yellow ; chela with the femur slightly darkened 

 above and at the sides, the dorsal keels being blackish ; 

 tibia also slightly darkened and marked with a dark line 

 posteriorly below; femora and tibiae of legs with dark lines. 



Material. — A single example from Berbera, Somaliland ; 

 collected by Mr. G. W. Bury. 



Remarks. — This new scorpion seems to me to be most 

 nearly allied to Nanohuthus andersoni, Poc, a species which, 

 so far, is only known from a single specimen from Duroor, 

 60 miles north of Suakin, in the Anglo-Egyptian Sudan. 

 The genital operculum is very similar in shape and size in 

 these two species, and they resemble one another closely in 

 the details of the structure of the keels and the granulation 

 of both trunk and tail. Nevertheless, there are important 

 differences between them, for a small tooth is present on the 

 underside of the immovable finger of the chelicera of the new 

 form and the chela is much stouter than in JSanohutlms. 



From Butheolus, Sim., this new genus can be readily 

 distinguished by the fact that the anteocular area of the cara- 

 pace slopes forwards only very slightly and by the shape of 

 the tail, which is much more slender and does not increase in 

 size posteriorly. 



Lychas [Hemilychas) alexandrinus, sp. n. 



Carapace granular throughout. Superciliary crests granu- 

 lar ; for some distance they are continued forwards, and then 

 lose themselves in irregular groups of rather large granules, 



