156 Bullcliii de la Société Enfoinologiquc d' Eyijpte 



eleven known Rlì(Ji)aloceia tour do noi occur elsewliere 

 in Kgypl. Fuiilur VW'st, species and individuals may 

 prove more abundant than on tlie })aiTen downs al)out 

 Kingi Mariutor Amria. 



Readers of this ])aper v>lio are at all accjuamted with 

 tiìe Lepido})lerous I'auna of Syria and Palestine will no 

 doubt have already lemarked on the absence troni l>gypl 

 — or at all event (Vom Middle and Lower Egypt — ol" cert- 

 ain species which occur in Syria and the Sudan e.g. the 

 difTerent spp. oi Teracolus which are taken in S. Pales- 

 tine, Belenois mesenlina, Jolaus Jordaniis peculiar itself to 

 I'alestine but of most African aflinities, /. aslcrope, 

 Jnnonia cebvene and others. 



The fact that Lower Egypt is geologically very mo- 

 dern and indeed iMobal)ly came int(j being after the 

 cessation offne Xile-.Jordan connection perha[)s explains 

 this. If the Nile entered a lake or sea-lagoon somewhere 

 in tJie latitude of Keneh or further south and the Jor- 

 dan, jirior to the volcanic disturbance v\hich cut it off 

 from th<> Red Sea by altering the levels of the «((ihor» 

 through which it llowed to the Gulf of Akaba, issued 

 into the same lagoon, we have an immediate explanation 

 of tlie startlingly Sudanese Flora and Faina of the 

 Jordan \'a!ley. Some of the Sudanese (dndo-African » 

 sp[). penetrated into Lower lügypt but it is not surprising 

 tliat all have not done so, the climate of Middle and 

 Lowei- Egypt l)eing less torrid than Ihal of the Jordan 

 \'alley, and the Flora far less tropical. 



'J he presence of desert and stepj)e lorms, Mediterra- 

 nean and more especially Algerian and Syrian in their 

 aflinities and distribution, in Lower Egypt reciuires no 

 explanation, once food plants of a suitable character are 



