68 NOVITATES ZOOLOOKAE XXIV. 1917. 



The Guelt-es-Stel unique specimen is in appearance intermediate between 

 the northern and the desert race, but it cannot be settled what form occurs in 

 this region till we find the larvae, and I prefer for the present to regard it as 

 mauretanica on account of its northern localitj'. Tlie specimens of this form in 

 the Tring Musetim number forty-one. 



11 Envii-ons d'Alger, May— October 1905-1914, W. R., E. H. and K. J., 

 Dr. Nissen and Captain Holl. 



3 Hammam R'ilira, April— September 1912-1916, W. R., K. J. and 

 Faroult. 



1 Hammam Meskoutine, May 1914, W. R. ai.d K. J. 

 10 Belvedere. Tunis, August — September 1915, Blanc. 



1 Gafsa, Tunisia. 



2 Khenchela, May 1912, W. R. and K. J. 

 1 Guelt-es-Stel, July 1913. 



3 Saida, May 1913, W. R. and E. H. 



3 Ain Sefra,"May 1913, W. R. and E. H. 



4 Djebel Mekter, near Ain Sefra, May 1913, E. H. and C. H. 

 1 Les Pins, July 1915, Rotrou. 



1 Sidi-bel- Abbes, August 1916. 



1 larva, 1 pupa, Khenchela, May 1912, W. R. and K. J. 



The specimens from the last four localities are very perplexing ; they agree 

 with mauretanica in size and appearance, but ought by rights to belong to the 

 next form ; however, as the " Hauts Plateaux " of Province Oran have a very 

 mixed fauna, it is possible that machaon is an immigrant from the cast and not 

 from the north. 



In the British Museum there Ls a single specimen from the Salvm-Godman 

 collection labelled " Algeria " ! 



2. Papilio machaon maxima Verity. 



Papilio machaon maxima Verity, Rhopalocera Palaearctica, p. 296. pi. lii. f. 2 (1911) (gen. vern.) 



(Tangier). 

 Papilio machaon maxima gen. aest. angulala Verity, Rhopalocera Palaearctica, p. 290. pi. \x. i. 14 



(1911) (Tangier). 



Mr. Blachier (Ann. Soc. Entom. France, vol. 77. pp. 209-211. ff.) 1, 2 (1908) 

 endeavours to show that the name mauretanica, originally given by Verity to 

 the whole of the Mauretanian machaon, should be restricted to the form from 

 Morocco. This is quite wrong, for Verity states distinctly that his form is small 

 and figures a specimen from Alger. Therefore the name of inaxima given three 

 years later by Verity must stand for the Moroccan form. 



This name maxima applies, however, only to the spring generation. The 

 summer generation, which is larger, has the black lines somewhat reduced and 

 the abdomen almost entirely yellow with only a black dorsal line ; this is Verity's 

 gen. aest. angulata. The number of specimens at Tring are twenty-one. 



2 Mazagan, April 1902, W. Riggenbach "j 



1 Ouled Farsh, AprU 1901, W. Riggenbach J-gen. vern. maxima. 



1 Djebel Tixa, March 1905, W. Riggenbach J 



