234 C. R. Osten Sachen: Diptera 



Two pairs of thoracic spines (besides 

 the pair on the scutellum). Genus 

 Teleopsis Eond. 

 Tip of the wings hyaline 



Head as dark as the thorax; wings 

 with two brown bands, sub- 



connected in the middle , . 2. helzehuth Bigot. 

 Head red, thorax black; wings 

 with a brown crossband just 

 before the tip ; the band in the 

 middle of the wing mach paler, 



subsolete 3. motatrioo n, sp, 



Tip of the wings dark brown; head 



yellow 4. selecta n. sp, 



Only one pair of thoracic spines (besides 

 those on the scutellum). Genus 

 Diopsis . . . , 5. suhnotataWestw. 



1. SpTiyr acephala cothurnata. 



Diopsis cothurnata Bigot, Ann. S. E. Fr. 1874, p. 115 (Celebes). 

 Sphyr acephala (f). 



The front is pubescent, but there are no conspicuous bristles, 

 except one, each side, near the orbit of Ihe eye. In Mr. Bigot's de- 

 scription, the word ,,superne" in the diagnosis and the correspouding 

 ,,en dessus'' in the french letterpress, must be Struck out; there is 

 only a single lateral thoracic spine under the root of each wing. (Com- 

 pare Bigot, Ann. Soc. Ent. Fr. 1881, p. 373.) 



Note on the Genus Sphyracephala. D. cothurnata, Q,s ■v^eW 

 as the african Diopsis Beccarii Eond. differ from the majority of 

 the Diopsidae as follows: 1. There is a distinct alula. 2. The sixth 

 vein is distinctly prolonged beyond the anal cell. 3. The peristomium 

 is not excised in the middle, and hence, there are no distinct projections 

 on each side. 4. The head, viewed in front (in the direction of the 

 axis of the body), appears triangulär; that is, its sides rise obliquely 

 from the peristomium (and not almost perpendicularly, as in an ordi- 

 nary Diopsis). 5. The abdomen is not pedunculate and clubshaped 

 (as it is in Diopsis), but rather flat, and attenuated at both ends. 

 6. The male hypopygium is large and protruding; in the female the 

 ovipositor is represented by two small valvules (white in both of the 

 above-named species); thus the sexes are more easily distinguished, 

 than in Diopsis. 7. The prothorax is shorter, more closely applied to 

 the mesothorax, and has not tiie saddleshaped depression, which 



