'^fi XOVITATES ZOOLOGICAE XXIV. 1917. 



The Tring series comprises 153 specimens ; 6 larvae and 1 pupa (the latter 

 May 1912). 



In the British Museum there is of this transitional form, 1 Bou Saada, Ren6 

 Oberthiir, 1875, ex Elwes coll. 



166. Euehloe falloui obsolescens Rothsch. 



Buchloe falloui obsolescens Rothschild, Novit. Zool. vol. xx. p. 112. No. 6 (1913) (South Oued Mya). 



Of this form I only have second-brood examples from places south of 

 Ghardaia, but first-brood individuals ought not to be different from Ghardaia 

 examples. Its chief character distinguishing it from /. jalloui is the strong 

 increase of yellow and the almost vanishing green bands on the underside ai 

 the hindwings. 



1 Ideles, March 1914, Geyr von Schweppenburg. 



1 Oued Agelil, March 1914, Geyr von Schweppenburg. 



3 South Oued Mya, April— May 1912, E. H. and C. H. 



1 Ain Guettera, April 1912, E. H. and C. H. 



6 north of Ain Guettera, April 1912, E. H. and C. H. 



9 Ghardaia, March— April 1911-1912, W. R. and E. H. and Dr. Nissen. 



The Tring Museum possesses 21 examples of this form. 



[Euehloe belemia Esper. 



Euehloe belemia from North Africa has been considered by most authors 

 to be identical with typical Spanish and Portuguese examples. Count Turati 

 separated the desert specimens under the name E. belemia desertorum on the 

 assumption that they were all as small and pale as the specimens from Biskra 

 he had before him. Rober described a form under the name of distincta, which 

 he said was larger than the type, and had much larger square black stigmas 

 on the forewing and which he says flies at PhDippevOle. In former articles I 

 employed these names to denote respectively the desert specimens, i.e. Biskra, 

 Bou Saada, Laghouat, etc. ; and those north of the Southern Atlas range. Mr, 

 Oberthiir quite rightly emphasises the fact that in most places the small indi- 

 viduals enormously outnumber the large ; but in two places, viz. Hammam 

 R'ihra and Hammam Meskoutme, I found nothing but very large and heavily 

 marked specimens. Now that I have carefuUy compared a much larger series of 

 individuals than I could formerly, I have come to the conclusion that at present, 

 although the desert form is fauly recognisable and the large Philippeville and 

 Hammam MeskoutLne specimens with their huge discoidal black patch are very 

 conspicuous, the general run of Mauretanian belemia are not much different 

 from specimens obtained north of the Mediterranean, and it will require careful 

 examination of the genitalia and the special Pierine scaling to finally determine 

 the different races. I therefore propose in this article to treat all the Maure- 

 tanean belemia under the head of the species as a whole till such times as Dr. 

 Jordan and Professor Dixey can find time to work out the races of belemia over 

 its entire range.] 



