Sl'OliriOXS AND ALLIED ASNTLATlOn Hl'IDKUS 0|.' THK ANGI,0- KliYI'TI \N Sl'DAN 



1S3 



found liillicrto in tho Ani»lo-l"jf,'Yptian Sudan, and belonjj to the strictly Afri 



can Koiiiii^ 



Fandiinti-. The j^enera of Hufhiil.-e are three 



••-• --. —Last two segments of cautla oi (^ / 



linilitis aiitoreuxi ; iU>:-,a: 

 kevls ot penultimate sei^rot'ut 

 i^^-l) strongly i-ulsetl, of liflh 

 lust) (rfSl seCiment siiitnouut 

 m dorsitl Siirfacr 



i End of foot . I :i liuilnis 

 7a — walkinft-spiuf . A — l.-i^a 

 spine : / — tarsal spine. 



(B) End of foot of a Pandiuus. 

 w — walkinft-apine ii— basal 



1 lio^er of in:i 



iiiiil> <ij a Parabutluts 

 obliqilf iliraunlar rows I 

 Krat'Jictht 



— iS*^*:''*^ 



and tbev mav be distinguished as follows : - 



•2;>. — Last two set;Iiitnts of Cauda of 

 Buthus tjninqnestriattis ; 



iinr^-.i L^.'. nf penultimjite 

 aiKed, of liftlt 

 ■d by dor^tal 



Ja — Cephalotborax of liuthus 

 jninax, sbowiu^ couflneut 

 iitiddle {m,ltl.) and post^-iior 

 iiediau keftls (f>.tll.). 



-Sternum of Pnndinus 

 pai-e St'Tiiiiin of i'-it 



1. Immovable mandibular finger witliout any tooth on the lower margin XhiidIhi/Iuis 

 Immovable mandibular finger with two teeth on the lower margin ... ... 2 



2. Cephalotborax with distinct keels formed by small granula ; dorsal plates of the 

 abdomen with three longitudinal keels, at least the hindmost ones ... ... Ihillms 



Cephalotborax without granular keels ; abdomen with a single median keel, or not 

 keeled at all ... ... ... ... ... ... ... ... ... rdnihiillni.^ 



I will now give a description of the species of scorpions occurring in the Anglo- 

 Egyptian Sudan. 



1. Genus: Butluis, Leach 



Immovable mandibular finger with two teeth-like prominences on the lower margin : 

 the last two pairs of limbs with tarsal spurs ; abdomen with three longitudinal keels ; 

 cephalotborax with distinct granular keels ; oblique granular rows on the maxillary fingers 

 with 1 to 2 lateral basal granuhe : l)asal median lamella of the combs not dilated in any 

 sex ; Cauda distinctly keeled below in all segments. 



This genus, represented in Southern Europe, Northern and Tropical Africa, and 

 Western Asia to India, is represented in the Anglo-Egyptian Sudan by five species that 

 may be distinguished by the following key, according to K. Kraepelin's excellent memoir, 

 " Scorpiones und Pedipalpi " in Das Tierrelch (VIII., 1899). 



1. Fifth caudal segment of the adult with sharp, prominent dorsal keels, bordering a 

 concave dorsal surface ... ... B. (I'rioitnraii = Androctonug) amoreuxi Sav. 



Fifth caudal segment of the adult with the dorsal keels missing or granular, surmounted 

 by the convex lateral parts of the dorsal surface ... ... .. ... ... ... 2 



2. Front of cephalotborax smooth : supraciliary ridges smooth : keels of cephalotborax 

 very obsolete ; keels of dorsal plates of the abdomen smooth, like its whole upper 

 surface ... . .. ... ... iJ. (iJiii/m.fd.v) /e^j/of/ir///^-, Hempricli and Ehrenberg 



Front of cephalotborax granular ; supraciliary ridges granular, or becoming granular 

 towards the anterior end ; keels of cephalotborax distinct, granular : keels of dorsal plates 

 of the abdomen granular, like the upper surface ... ... ... ... . . ■• -i 



3. Posterior median keels of the cephalotborax confluent with the median lateral keel, 

 forming with their fellows a lyre-shaped figure (Fig. 20) ; poison bladder nearly smooth 4 



Posterior median keels of the cephalotborax confluent with the middle median keel, 

 thus forming a parallel-sided area (Pig. 25) ; poison-t)ladder granular ... ... ... ■") 



4. First two dorsal plates of the abdomen like the following, with three distinct, 

 straight, smooth keels: movable finger not twice as long as hind-hand H. (B.) occilatiii.-- \,. 



( ilMlUS : 



Buthus 



