SCORPIONS AND AI.rjF.n ANNITiATED SFinEBS OF THK ANGLO-F.GYl'TIAN SL'DAN 187 



border of the cephalothorax ; posterior inargiu of tibia of maxillary palp with rather a 

 sharp, smooth keel, preceded by numerous trichobothria (sense-pits, minute round f,'rooves 

 with a hair in the middle) arranged iu 2 to 4 rows. 



To this group belong some of the giants of tlic whole group ; the genus is nearly 

 entirely restricted to Tropical Africa. 



The three species known hitherto from the Sudan may easily be distinguished 

 as follows : — 



1. Ventral combs witii U.i-14 lamella' ; limbs and body dark brownish 



or greenish-black ... ... ... ... ... ... 1'. imperator 



Ventral combs with 17 1^2 lamellae ... ... ... ... ... 2 



2. Femur of maxillary palp granular below ; upper surface of hand with 



more or less distinct traces of keels ... ... ... ... ... ... P. exitialia 



Femur of maxillary palp smooth below ; upper surface of hand 

 without any keels ... ... ... ... ... ... ... ... ... P. palluhis 



PtiiidiiiK.i pdUidii^, Kraepelin (Plate XV., fig. 2) 



Kracpeliu. Mill. .Uns. Iliimhurfi, XI. 1894, p. CO; (Scorpio); " Scorpiones unci Pedipalpi" 

 ill Ihis Ticrreieh, VIII. 1899, p. 120 



Yellowish to greenish-brown, hands more reddish-brown, limbs pale yellow. Dorsal Pajidinm 

 keels of the short cauda with acute denticulation ; hand of maxillary palp nearly as broad 

 as length of movable finger, its upper surface with smooth, isolated (or, in the var. (jregonji, 

 reticular) prominences ; 17 to 21 lamella; in the ventral combs. 



This species has been found only in Somaliland and Kordofan ; the Kordofan specimen, 



measuring 10'7 centimetres to tip of tail excluding poison fang, was collected by 



Bimbashi Williams, late of the Sudan Veterinary Department. It belongs to the 



var. (irer/dri/i, Pocoek [Ann. Maij. Nat. Hii't. [6] XVII. 1896, p. 432) which is not very 



different from the type. 



Piiniliiiuit exitialis, Pocoek 



Poco<-k, ./,'«. .1/";/. Xiil. Ilisl., Series G, Vol. II., p. -^40 (Snupin) 

 Kraepelin, Has Tierrrlrh, VIII. 1899, p. 119; Zool. Jahrb. Sijst. (1903), XVIII., p. oG7. 

 Hirst, ./««. .)/";/. Xfil. Ilisl., Series 8, Vol. VII. 1911, p. 219. 



Blackish-brown, limbs yellow. Fenuir of maxillary palp granular below ; upper Pandinus 

 surface of hand with distinct longitudinal keels (four complete and a short inner keel 

 in a specimen from the Blue Nile). Lower surface of hand with two longitudinal 

 granular rows near the outer margin. The species was originally described from Shoa. 

 Captain S. S. Flower found a small male, measuring 85 mm. in length, at Abu Haraz, 

 Blue Nile. 



A variety xudanicHu described by Mr. Hirst at the same time as this specimen, seems 

 to me nearly related to 1'. paUiiliii: grpr/nryi. In comparison with e.ntiali.'< the hand is 

 much smoother, nearly the entire surface of the lobe (the produced part of hind hand) 

 being furnished with low anostomony ridges instead of isolated tubercles. These ridges are 

 smaller and narrower than in gregoriji, but it is easily distinguished from this form by 

 having the lower side of femur of maxillary palp granular instead of smooth. 



The only known specimen of this variety is a female, 111 nmi. long, from .lel)el Mai, 

 12 miles south of El Obeid, Kordofan, collected by Captain (now Major) H. N. Dunn, H..\.M.(;. 



I'liiiiliiiiis iiihpri-iitiir, C. L. Koch (Plate XV., fig. 1) 



Krnepi'liii. •' Sc-orpiunes iiud Pedipalpi," iu Dux Ticririch. VIII. 1899, p. 122 



Pantiiniis 

 Dai-k green oi- jjiceous ; vesic-lr riHldish-bi'own ; liml)s leather-brown to dark lu'own imperaior 



