ISCOUI'IUNS AND AhLlKli An N I! LAT K 1 1 SriUKRS 



OF THE ANCil.O-EGYI'TlAN SuDAN 



liY 



PUdFESSDK FkANZ WeHNEU 



The University, Vienna 



Having treated in the foregoing Report' the poisonous snakes of the Sudan, I shall 

 try now to deal in the same manner with another group of animals, which are feared 

 with more or less reason and which have been the subject of my investigations during 

 the time which I passed in the Sudan (Winter, 1905). 



The scorpions form, in the widest sense, a very distinct and unmistakable group of a distinct 

 the ArachnoidPM or spiders, and are characterised as belonging to them by having two gjoupofthe 



f ' . . . Arachnotdca 



pairs of articulated mouth-parts and four pairs of likewise articulated limbs, by the 

 fusion of the head and thorax to a " cephalothorax,'' by the limbless abdomen and by the 

 complete absence of gills, all members of this group breathing air directly by means of 

 so-called "lungs," which consist of four pairs of invaginations of the skin, opening 



'i'tii'Hul joiuls 

 Claw8 

 Doi'Hul keel 

 l.!iteml keel 

 DoJ'Sal furrow 

 Cuudti (tail. 



postabdonien , 



Fi^. -ith — Buthiis occitanus — from abo% 



Third Report, li'cUcomc Tropical Research Laboratories, Gordon Memorial College, Khartoum. 



