70 XOVITATES ZOOLOOICAE XXIV. 1!>17. 



2 Laghouat, March— April 1911-1912, W. R. and E. H., Faroult. 

 5 Ghardaia, May 1912 and 1914, E. H. and C. H. 

 1 Oued N^a, May 1914, E. H. and C. H. 

 8 El Hadadra, May 1912, E. H. and C. H. 



1 Oued Mya, April 1912, E. H. and C. H. 

 5 larvae, 1 pupa shell, Bou Saada, Faroult. 



2 larvae. El Hadadra, E. H. and C. H. 



Mr. de Joaniiis records two specimens collected hy Mr. M. R. Chudeau, 

 August 1905, at Tamangha-sset, Hoggar Mountains. 



The larvae of vutchaon saharae are very different from those of other forms 

 of machaon. They resemble those of Papilio hospiton of Corsica and Sardinia 

 in having tlie black segmental and intersegmental bar.ds broken up into spot.'-. 



[Papilio podalirius Linn. 



Dr. Veritj', in his Rhopalocera Palaearctica, p. 293 (1911), asserts that he has 

 become convinced that P. podalirms and P. feisthameli are two distinct species, 

 and not, as hitherto considered by himself ar.d otheis. two local races of one 

 and the same species Papilio podalirius. Dr. Verity further asserts that podalirins 

 and feisthameli hy together tliroughout Spain and across to Tangier. 



Dr. Jordan and I have been too busy with other entomological work to go 

 carefully into this question and dLssect a number of specimens ; moreover, 

 although my material at Trmg is very large, the scries from Spain and that 

 from Northern and Central France are very poor. I therefore cannot at present 

 adopt Dr. Verity's view, but consider it verj- doubtful indeed if podalirius and 

 feisthameli can be considered anything more than two very distinct subspecies 

 of one species. I have examined 536 specinicrs of podalirius and feisthameli 

 in the Tring Museum and those in the British Museum and others ; and out 

 of this large number of nearly 650 specimens from the whole of its range, I 

 only know one specimen of what could be considered true podalirius which has 

 been taken within the feisthameli area, and this is a Tangier specimen obtained 

 by Mr. Meade- Waldo now in the British Museum. It is quite reasonable to 

 suppose that this specimen is a reversion to an ancestral type or else a 

 variation from the more ancestral form to the more recent, whichever view is 

 considered the more consistent with the known facts about podaliritis and 

 feisthameli. This specimen is quite similar to podalirivs in every way, but is 

 rather large even for a female.] 



4. Papilio podalirius feisthameh Dup. 



Papilio feisthameli Duponchel in Godart's Lipid, de France, Kupp. I. p. 7. t. 1. f. 1 (1832) (Perpignaa 

 loc. typ. fixed by Pierret). 



There are two distinct seasonal generations, gen. vern. feisthameli ard gen. 

 aest. latteri Aust., in Barbary, and the latter is at once distinguishable by its 

 great size and in being nearly always white, while the $ feisthameli is generally 

 pale yellow. 



We found this butterfly abundar^t in the neighbourhood of Alger and at 

 Hammam R'ihra ; but elsewhere, though not rare, was only seen singly. At 

 Tring the series comprises 178 specimens from Mauretania. 



