340 NOVITATES ZOOLOQICAI: XXIV. 1917. 



30. Zygaena algira exigua Seitz. 



Zygaena algira ab. exigim Seitz, Orossschm. Erde, vol. ii. p. 29. pi. 8. row a. (1909) (High Atlaa, 

 Algeria). 



Dr. Seitz, although he states that the form he calls exigua is the High Atlas 

 race of algira, has only treated it as an aberration. The form found round Batna , 

 Lambessa, and Khenchela is clearly an algira form, but it is, as Dr. Seitz says, 

 generally smaller than coastal algira, and a number of individuals have a magenta 

 or purplish tinge which is never found in algira from the Uttoral. I therefore 

 think it is necessary to keep it separate as a local race. 



69 Environs de Batna, May 1911-1914, A. Nelva. 

 36 Lambessa, June 18S5-1912, L. Bleuse and Nelva. 



3 Klienchela, May— June 1911-1912, Faroult, W. R., and K. J. 

 2 Mauretania, ex coU. Grura-Grshimailo. 



The Tring series comprises 110 examples. 



31. Zygaena marcouna marcouna Oberth. 

 Zygaena marcouna Oberthiir, Etud. Entom. liv. xii. p. 27 (1889) (Marcouna). 



We have never taken the typical marcouna, which appears to be confined 

 to the Aurds Mountains and is very rare. 



4 Mauretania, ex coll. Grum-Grshimailo, and Staudinger. 



32. Zygaena marcouna excelsa subsp. nov. 



This form differs from marcouna tnarcouna in being larger, the wings broader, 

 and the red much brighter and tinged with mauve. 



Habitat. Djebel Mekter, 1,600-1,900 metres = 5,200-0,175 ft., near Ain 

 Sefra. 



84 Djebel Mekter, May 1913, E. H. and C. H. 



33. Zygaena felix Oberth. 



Zygaena felix Oberthiir, Etud. Entom. liv. i. p. 30 (1876) (BogUari, Lambessa). 



Mr. Charles Oberthiir is of opinion that this Zygaena is a distinct species and 

 not, as Staudinger and others have stated, a subspecies of hilaris. It is certainly 

 very different from typical hilaris, and is moreover excessively variable individu- 

 ally. Specimens occur with and without the abdominal pink ring and witli and 

 without white or buff rings round the red spots on the forewings ; sometimes 

 these pale rings are so expanded as to make the ground-colour white or buff ; 

 in some the red patches are pale pink, in others the whole of the red on fore- and 

 hindwings is a mauve-pink, and again others have this colour intense deep red. 

 The typical jelix has the abdomen entirely black and the red of the forewings 

 margined narrowly with white ; similar specimens but with a pink abdominal ring 

 are ab. mauretanica Stdgr. ; while specimens with the white margins much 

 expanded are ab. faustiila Stdgr. We took this species in quantity at Khenchela 

 and one soUtary example at Hammam R'ihra. 



1 Hammam R'ihra, May 1908; W. R. and K. J. 



2 Magenta, June 1886, Lt. Lahaye. 



3 Titen Yaya, June 1915, Rotrou. 



