364 NOVITATES ZOOLOOICAE XXIV, 1917. 



figures to those belonging to the names of species in the text, is a serious blot 

 on Dr. Seitz's great work ; it arises from Dr. Seitz arranging the plates inde- 

 pendently of the author's. Although I think eventually josiia will prove to be 

 only a form of irifolii, I keep it separate here as the larva is also different.] 



85. Pachygastria josua vaucheri (Blach). 



Lasiocampa josua var. vaucheri Blachier, A?in. Soc. Entom. France, vol. Ixxv. p. 23. pi. 2. if. 4, 5 

 (1906) (Tangier). 



The larvae both of typical josua and of the form from Mauretania differ 

 from the lai'vae of the various irifolii races by being much blacker, the paired 

 white segmental spots are much more conspicuous, and the hairs are scantier 

 and brown, yellowish brown, or dark grey, not golden yellow or silver grey. 

 Ain Draham specimens I have are quite as large and robust as the Tangier 

 examples. The Tring Museum has 25 examples. 



1 o, 1 ? Tangier, Vaucher (ex Staudinger). 



1 o Mazagan, Morocco, August 1903, W. Riggenbach. 



1 <J Eabat, 1914, A. Thery. 



1 ? Masser Mines, August 1914, Faroult. 



2 33 Guelt-es-Stel, October 1913, Faroult. 



8 <J<J, 1 $ Ain Draham, September 1911, Faroult. 



1 (J, 1 9 Environs d'Alger, Dr. Nissen and Captain Holl. 



1 (J Bordj-bou-Arreridj, October 1912, Faroult. 



6 (?(J Batna, September — October 1912, Nelva. 



1 larva, Lac Fetzara, May 1909, W. R. and E. H. 



1 larva, Ain Sefra, May 1913, W. R. and E. H. 



I unfortunately overlooked Mr. Blachier's description and described seme 

 aberrant Guelt-es-Stel Irifolii mauretanica as josua deleta, misled in part by 

 Seitz (NoviT. ZooL. vol. xxi. p. 314. No. 49 (1914)). 



86. Pachygastria trifolii codes (Hiibn.). 



Bombyx codes Hiibner, Samm. Europ. Schmett. No. 332-335 (1831) (?). 



The Mauretanian coastal and tell race of Irifolii has received numerous 

 names ; but although it is very variable, I think it is all referable to codes, and 

 the forms named seitzi, jugurthina, etc., are all mere casual aberrations of codes. 

 We have taken the larvae of this insect, but were never in Algeria at the time 

 of flight of the imago. 



49 Mazagan, Morocco, September 1902-1903, Riggenbach. 

 5 Rabat, Morocco, 1914, A. Thery. 



2 Zoudj-el-Beghal, November 1914, Faroult. 

 1 Masser Mines, November 1914, Faroult. 



1 (J Lalla Marnia, October 1914, Faroult. 



2 Perregaux, November 1915, Faroult. 



18 Environs d'Alger, Dr. Nissen and Captain Holl. 



1 Media, November 1912, Faroult. 

 64 Ain Draham, Tunisia, September 1911, Faroult. 



3 larvae, Hammam R'irha, W. R. and K. J. 

 1 larva, Environs d'Alger, W. R. and K, J. 



