ANDBENOSOMA.— MALLOPHOKA. 189 



4. Andrenosoma 



Hah. Guatemala, El Reposo 800 feet (Champion). 



Of the group with the abdomen black, reddish at the end, and with white marginal 

 spots on both sides. The tibise are dark red, with black tips ; the wings subhyaline, 

 with a brownish cross-band across the central nervures, and another, ill-defined cross- 

 band towards the tip. I cannot determine it, and do not think it advisable to describe 

 from a single specimen. 



Section III. ASILINA. 



MALLOPHOKA. 



Mallophora, Macquart, Hist. nat. Ins. Dipt. i. p. 300 (1834). 



Upwards of sixty American species of this genus have been described. They are 

 often very much alike in the colour of their hairy covering, but at the same time that 

 colour is not altogether constant in the same species and offers differences in the two 

 sexes. Other characters have been very little used by describers. Doubts about the 

 identity of species mentioned under the same name by different authors, or so deter- 

 mined in different collections, suggest themselves very often here, and thus it becomes 

 an almost hopeless task to determine specimens. Though I have seen the collections 

 in Berlin and Vienna, and the Mexican collection of Professor Bellardi, I have not 

 been able to determine satisfactorily the few specimens before me. I describe one new 

 species and give a short account of the remainder, with a justification of my doubts as 

 to the specific value &c. of the latter. 



1. Mallophora infernalis. 



Mallophora infernalis, Bellardi, Saggio &c. ii. p. 21 (Wiedem. ?) \ 

 Hab. Mexico x ; Panama, Bugaba (Champion). 



I have a single female from Bugaba ; it is black, with a bluish reflection on the 

 abdomen, and entirely beset with black hairs, except the scutellum, which has yellow 

 hairs ; there are also small tufts of pale yellowish hairs on the cheeks, and a few such 

 hairs on the vertex and on the upper portion of the facial protuberance. I have com- 

 pared this specimen with Prof. Bellardi's types, two females ; the latter agree with it, 

 but have a few yellow hairs on the anterior edge of the thorax, and more on the 

 mystax and cheeks. The Asilus (M.) infernalis, Wiedem. (Aussereur. zweifl. Ins. i. 

 p. 475), quoted by Bellardi, has the anterior half of the abdomen beset with yellow 

 hairs ; Wiedemann, however, mentions a variety, the scutellum and abdomen of which 

 have nothing but black hair ; it still remains to be proved whether it is really the 

 same species as Bellardi's. A second female specimen, from the Volcan de Chiriqui 

 (Champion), is entirely black, except a tuft of yellow hairs on the cheeks and a few 



