NOVTIATES ZOOLOOICAE XXIV. 1917. 337 



25. Zygaena thevestis Stdgr. 



Zygaena tlievestis Staudiager, Bed. Entom. Zeitschr. vol. xxxi. p. 33 (1887) (Lainbessa, Tebessa). 



I have stated above that I consider tliis a distinct species which is very 

 rare in the province of Constantine, fairly common in the province of Oran, and 

 very abundant on the " Hants Plateaux " of the central province. That it has 

 been observed in copula with favonia, I must again repeat, is no evidence of 

 specific identity, as many species of Zygaena have been observed in copula with 

 very diverse other species, and even with Procris, and j'ct no one disputes their 

 specific rank. 



We have only taken a single thevestis, and that at Khenchela. The British 

 Museum has no examples. The Tring series totals 292 examples. 



1 Mauretania, Staudinger. 

 285 Guelt-es-Stel, June 1913, Faroult. 

 1 Batna, 1909, Nelva. 



1 Djebel CheUa, June 1911, Faroult. 



2 Djebel Marcouna, June 1911, Faroult. 



2 Lambessa, June 1885-1912, Nelva and L. Bleuse. 



26. Zygaena vitrina Stdgr. 



Zygaena favonia var. vitrina Staudinger, Berl. Entom. Zeitschr. vol. xxxi. p. 32 (1887) (Constantine). 

 We never found this insect ourselves, nor have any of my correspondents 

 found it except Mr. A. Nelva, who has bred a few from larvae feeding on a blue- 

 flowered Eryngium. The British Museum has no examples. 



7 Mauretania, Grum-Grshimailo coll. and Staudinger. 

 27. Zygaena seriziati Oberth. 



Zygaena seriziati Oberthiir, Etud. Entom. Uv. i. p. 33 (1876) (Collo). 



We have never taken this species ourselves, not having collected in the 

 locaUties where it is found ; in fact, in the only one of these we have visited 

 (Bone) we stayed only a few hours on our way back from Lac Fezara. 



2 Collo, May 1887, Dr. Seriziat, Grum-Grshimailo coll. 

 9 Mauretania, Grum-Grshimailo coll. and Staudinger. 

 32 Leila Kredidja, June— July 1907-1912, Dr. Nissen. 



The specimens in which the hindwings have the red reduced to a spot at the 

 base and one on the disc have been named ab. nigra Dz, All my series from Leila 

 Kredidja are of this form, and moreover the red spots on the forewings are very 

 small. 



The British Museum has 1 6 specimens : 4 Collo, Frey coll. ; 5 PhiUppeville, 

 May 1904, Lord Walsingham ; 2 Algeria, Herring, 1874 ; and 5 ex Leech coll. 

 labelled 3 " Algiers " ! ! and 2 " Spain " ! ! ! The Tring series totals 43. 



28. Zygaena syracusia Zell. 



Zygaena syracusia Zeller, Iris, vol. xl. col. 301. No. 68 (3) (1847) (Sicily). 



The same remarks apply to this species as to seriziati, namely, that we 

 ourselves never took it ; but, unlike that species, the cause is not the same, 



