•55 



Body black, with black hairs and bristles. Antennae plumate ; eyes 

 brown ; the cheeks and front in certain lights appear hoary or silvery from 

 inconspicuous down, in others black ; feelers subferruginous ; trunk and 

 abdomen black-blue with a greenish tint ; wings hyaline ; intermediate 

 areolet obtusangular ; winglets white, bordered with a test jceous nervure. 



This species approaches very near to M. cadaverina, but the front, 

 winglets and palpi are of a different color. 



445. MuscA iMORTisKQUA Kirhy. — Length of body 5^^ lines. Sev- 

 eral taken with the preceding. 



[317.] Body black, with black hairs and bristles. Eyes brown; 

 cheek and front ferruginous, in certain lights exhibiting something of a 

 golden lustre ; feelers long, slender, reddish-yellow ; trunk slightly hoary, 

 with three very indistinct bljtk dorsal stripes ; wings hyaline, with the 

 intermediate areolet projecting internally into an acute angle ; winglets 

 white terminated by a white nervure ; abdomen heart-shaped, glossy, blue 

 with a slight tint of green. 



This seems to be the American representative of M. vojuitoria^ from 

 which it differs chiefly in having three obsolete black stripes between the 

 wings; in the anterior spin cles not being of a different color from the 

 rest of the trunk ; in having white winglets and not black edged with 

 white ; and in the abdomen exhibiting no changeable appearance of 

 chequer-work. 



Variety B. with a green abdomen. 



C. with chalybeous abdomen. 



X.— HOMALOPTERA, Leach. 



FAMILY HIPPOBOSCIDi*:. 



446. HipPOBOSCA EQUINA Litin. — Length of body, excluding wings, 

 4 lines ; including do., 5 lines. Locality not mentioned. 



Body flat ; subpubescent, dirty-yellow, spotted with brown, with whit- 

 ish signatures. On the forehead, between the eyes, is a brown quadrangu- 

 lar spot shaped like what are called skates eggs, with four projecting points 



