( -l*^" ) 



//(//'. West Central Sahara. 



Tyi)e : c^ ad. Oued Mya, May 2, 101-,' (Ernst Harterl and Carl Hilg-ert coll. J. 



Ovis lervia blainei siibsji. nov. 



d ad. Horns strongly depressed, turning shari)ly downwards, Imt nut lient 

 backwards so ranch as in the other three races. 



Neck and body nnifornily brownish grey, less rnfbns than in :iuy of the other 

 races. Sides of head, face, and mask uinch darker owing to admi.\tnre of blackish 

 hairs ; beard on rami of lower jaw abuost black. 



Hak Dongola Province? ; Kordofan. 



Type : S ad., Border of Dongola Province and Kordofan (Gilbert Blaine coll.j. 



I here append a short key of the foar races : 



/•Horns strongly depressed, no face-stripe. ~'. 

 1 - Horns hardly or not at all depressed, an indistinct median face-stripe. Oc/n 

 I lercia lercia. 



,^ jPelage sandy rufous. 3. 



~ iPelage brownish grey, beard blackish. Gets lercia blainei. 



(Pelage warm sandy rufous, no white sub-auricnlar [)atch. Ocis lercia ornata. 

 iPelage pale sandy rufous, a white sub-auricular patch. Ocis lercia naharicrtsis. 



XII. 



ON UIPTERA COLLECTED IN THE AVESTEKN SAHARA BY DR. ERNST 

 HARTERT, WITH DESCRIPTIONS OF NEW SPECIES. 



By ERNEhiT E. AUSTEN. 



Part I. BoMBYLIIDAE. 



{Published hi/ permi.s.sion of the 'rriiateen of tin: British M/iseiim.) 



The collection of Diplera formed by Dr. Ernst Hartert during his receid expedition 

 to the Algerian Sahara, although not extensive, includes, as is but natural, a number 

 of species of interest. Owing to official duties, the author has found it impossible 

 in the following pages to do more than give an account of the liombi/liiilae, but a 

 second instalment of this jiaper, dealing with the remainder of the cidlection, will be 

 published as soon as possible. In the present contribation, for the sake of greater 

 comjdeteness, notes on certain specimens taken in Algeria in 1!IU8 by the Hon. 

 L. W, Kothschild, and jiresented by him to the National Collection, have also been 

 inclnded. With the excejition of species distinguished by an asterisk (*), deter- 

 minations of previously described species have been su])|died or verified by 

 Herr Th. Becker, of Liegnitz, who lias made a special study of Algerian Diptera, 

 and to whom the author desires to express sincere thanks for his great kindness. 



It only remains to add that Dr. Hartert's collecticni of l)i|itera, including the 

 types of new species, has most generously been ])resented to the British Museum 

 (Natural History). 



