368 NOVITATES ZOOLOGICAE XXIV. 1917. 



92. Lambessa staudingeri castaneolavatus Rothsch. 



Lambessa staudingeri castaneolavatus Rdttechild, Novit. Zool. vol. xxi. p. 314. No. 51 (Synopsis of 

 Lambessa) (1914) (Sebdou). 



Mr. Oberthiir received a number of Jo of tliis form from Aflou and tlie 

 vicinity of Sebdou from Harold Powell. It is the western race of staudingeri, 

 which appears to be confined to the Province of Constantino. We never caught 

 or received this insect. 



[THE MAURETANIAN SPECIES OF CHILENA AND 

 THEIR RELATIVES. 



These species fall naturall}' into two well-marked groups, first those with 

 white wings and bodies, viz. oherthilri Luc, hilgerli Rothsch., and virgo 

 Oberth. ; and secondly those with grey wings and bodies, viz. geyri Rotlisch., 

 malacosomoides Rothsch., and lucasi Oberth. 



Of the first or " White Group," in addition to the three Manretanian species, 

 there are two other Palaearctic species, obligitata Klug. and pura Warr., both 

 from the Egyptian region, while of the second or " Grey group " there are also 

 two other Palaearctic species, viz. sordida Ersch. and proxitna Stdgr. There 

 are, of course, a number of other non-Palaearctic species of CJnlena mostly from 

 tropical Africa. 



Of the "White Group" the three Mauretanian species differ considerably 

 from the two Egyptian ones, for while virgo is quite white, the other two have 

 two transverse lines, whereas the two Egyptian ones both have only a single 

 line. The question of course arises, Are the two banded Algerian species 

 oberlhiiri and hilgerti distinct ? I answer that, without examining and com- 

 paring the actual specimens side by side, there are many so-called " Species- 

 Lumpers " who would maintain they are the .same ; but I think I can prove 

 they are distinct. In oberthiiri Luc. the outer of the two transverse lines starts 

 from the apex and reaches vein 1 near the tornus, being somewhat angled at 

 vein 5 ; the inner hne is sinuate very broad and does not reach much beyond 

 vein 2, while it starts from vein 7 ; moreover, the basal half of the mng is 

 strongly dusted with greyish scales with exception of the cell, while tlie tarsi are 

 white. In hilgerti, on the other hand, the outer Une starts from vein 9 below the 

 apex and runs much more obliquely to vein 1 fully one-third behind the tornus ; 

 the inner line is very faint in both V? and runs parallel to the outer from costa to 

 vein 1 ; the whole of the wings are tinged with bulf , the hindwings less so, and 

 the tarsi are uniform pale cinnamon-grey. Another striking difference between 

 the Egyptian and Algerian " White " species is that while obliquata Klug. has 

 golden-yellow tarsi and jnira orange tarsi ringed with black, the Algerian ones 

 have them white or grey. Of the " Grey Group " only lucasi Oberth. is any- 

 where near the other Palaearctic species, both geyri and malacosovwidcs being 

 very distinct.] 



93. Chilena oberthuri Lucas. 



Chilena oberthiiri Lucas, Bull. Soc. Entom. France, 1909. p. 71 (Tunisia). 



Chilena oberthuri Lucas, Ann. Soc. Entom. France, vol. Ixxix. p. 477. pi. IS. f. 9 (1910) (Tuzeur, 

 Zarcine). 



We never obtained this form. Mr. Oberthiir records a ? from El Outaya, 

 Algeria. 



