OBTAINED IN EGYPT AND TEE SOUDAN. 309 



In the adult c? and 2 the manus 

 is narrow, not wider than the 

 brachium.* 



Pectinal teeth in c? 25-2/, in § 19- 

 20 (23) . 



Loc. Egypt. 



In the adult S and $ the manus is 

 wide, wider than the brachium. 



Pectinal teeth in S up to 34, in 



5 down to 25. 

 Loc. Mesopotamia and Persia. 



This brief diagnosis of P. crassicaucla, Oliv., shows that the 

 sjDecies is very nearly allied to those that Kraepelia has diagnosed 

 under the name fanestus. Mens. Simon was I believe the first 

 to attempt to define the difierences between, the dark coloured 

 species of Prio7iU7ms. He recognized two forms, namely, crassi- 

 cauda (Oliv.) from Persia and Syria, and ceneas of C. Koch from 

 Algeria; but he was wrong in supposing SzcoZor of Hemprich 

 and Ehrenberg to be the same as crassicauda of Oliv. I suspect 

 that the Algerian form to which C. Koch gave the name ceneas 

 may prove to be distinguishable from both the Egyptian and the 

 Persian species ; but I have not seen a large enough series of 

 specimens from that country to be able to speak with any 

 certainty on the point. 



GrenUS PAEABUTnUS, Poc. 



What I have said above respecting Prof. Kraepelin's revision 

 of Prionurus applies perhaps with even greater truth to his dis- 

 cussion of the genus Parahuthus (Seterohuthus). He admitted 

 only two species of this genus — one named liosoma, Hempr. & 

 Ehrenb., and the other hrevimanus, Thorell. But he certainly 

 mixed up several valid species under liosoma. The following, for 

 instance, cannot possibly be confounded with it : — P. villosus, 

 Peters, from Hereroland, Congo ; P. fulvipes, Simon, from 

 S."W. Africa ; and P. planicauda, Poc, from Cape Colony. 

 I suspect that the last-named species will be found to have the 

 following synonymy : P. capensis, Hempr. & Ehrenb., = P. zVos, 

 C. Koch, = P. segnis, Thorell, =P. planicauda. But whatever its 

 name and synonymy may be, there certainly is in Cape Colony a 

 common species, of which the Museum has now about 50 speci- 

 mens, which is perfectly distinct from P. liosoma. 



Pakabuthus Hunteet, sp. n. 



I venture to propose a new name for a form occurring on the 

 west coast of theEed Sea, and nearly allied to the typical Arabian 

 liosoma. 



* It is highly improbable that all the Egyptian examples which have been 

 described and figured are immature. 



