1898.] NATURAL SCIENCES OF PHILADELPHIA. 159 



Anthrax sufficsa Walker, (List, etc., pt. II, 251), described without 

 habitat. As it is undoubtedly an Exoprosopa, the two names can 

 remain. It is allied to Anthrax vespertilioni Meig. 



Eurycarenus laticeps Loew. 



Bombylius laticeps Loew, Bericbt. der Konigl. Preuss. Akad. d. Wissensch. 

 Berl., 659, 1852; Peters, Natur. Reise nach Mossambique, Insect., 14, 1862. 

 Eurycarenus laticeps Loew. 



One specimen, Shiekh Husein, September 26, 1894. The vena- 

 tion is exactly like that figured by Loew, but the pile is more or less 

 rubbed from the abdomen. 



Bombylius sp. 



One specimen, December 3, 1894. Too much injured to determine. 



SYRPHID^l. 



Melanostoma annulipes Macquart. 



Syrphus a?inulipes Macq. Dipt. Exot, II, pt. 2, 102, pi. 17, fig. 4,1842; 

 Bigot, Ann. Soc. Ent. Fr., VII, 3 ser. 436, pi. 12, fig. 5, 1859. 



Eleven specimens, Sheikh Husein, Sept. 29th, Oct. 7th, and Gin- 



neer Nov. 14th. 



Syrpbus sp. 



Two specimens, Sheikh Husein, September 29th, and October 8, 

 1894. 



Asarkina sp. 



One specimen, Sheikh Husein, September 20, 1894. 



Khingia caerulescens Loew. 



Rhingia ctcrulescens Loew. Dipt. Fauna Sud-Afri. (101) 29, 1860 ; Oefers. 

 Kongl. Akad. Forhand., 377, 14, 1857. 



Three specimens, Sheikh Husein, September 29th, and October 1, 

 1894. 



MEGATRIGON n. gen. 



Head hemispherical, slightly wider than the thorax, front and 

 vertex of nearly uniform width, the three ocelli widely separated, the 

 two upper ones being situated on the vertical orbits near the angles of 

 the eyes, the three being widely equidistant, eyes hairy, occiput prom- 

 inent, third joint of the antennae ovate as long as the first and second 

 taken together, arista inserted near the base and slightly longer 

 than the third joint. Thorax as wide as long, anterior margin 

 straight, posterior portion rounded. Scutellum but slightly arched 

 and of a nearly equal width. Abdomen convex, oblong, slightly 

 tapering, about twice the length of the thorax. 



