CHAP. XIX. DIPTERA. 359 



company was fluttering about the summit ridge. This, the highest 

 moth obtained, was also the smallest 

 taken anywhere in Ecuador. 



DiPTERA.. — The Diptera as a whole 

 have not been examined, but I have had 

 the advantage of submitting some sec- 

 tions to Baron C. R. Osten Sacken, who 

 has recognised amongst them species of 

 the following genera. 



Sciara, a broad-winged species of a South- ^^^^^ ^^^^^ ^^^^ ^^^^ ^^ 

 American and Mexican type, like Sc. Ameri- ^^"^°'it^^h,^rJi,f?^^^'^ 



cana, Wied. 



OF PICHINCHA. 



Plecia, a small black species. Another larger and more slender species 

 (Cotocachi, 11-13,000 feet) may perhaps belong to the genus Spodius, Lw. 

 {Hesperinus, Walk.) which has been found in the British possessions of North 

 America, in the higher regions of the Rocky Mountains, and also in Eastern 

 Europe. 



Dilophus, a single specimen of a small species of very ordinary appearance. 



Bihio, male specimens of a black species of ordinary appearance. 



Pachyrrhina, a couple of specimens. 



Tipula, four or five species; one of them from La Dormida, Cayambe 

 (11,800 feet), with the knot -like swellings on the joints of the antennae, 

 peculiar to some South-American and Mexican species. 



Dicranomyia, a male specimen, camp on Cayambe (15,000 feet). 



Rhyphus, a single specimen, with pretty variegated wings. 



Tabanus, a single specimen of a small, inconspicuous species. 



Chrysopila, a single specimen of the usual type, with the golden pubes- 

 cence. 



Odontomyia, ordinary type. 



Empis, several specimens of a small black species from Antisana, and La 

 Dormida, Cayambe. 



Asilus, a small gray species, represented by a couple of specimens. 



Eristalis. I could distinguish three species, — one with a gray transverse 

 band on the thorax, not unlike the E. albiceps, Macq., from the southern 

 United States, or the E. seniculus from Cuba. 



