MUSCID/E — HIPPOBOSCID^E. 317 



DESCRIPTION. 



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 black 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. vomitoria, from which it differs chiefly in 

 having three obsolete black stripes between the wings ; in the anterior spiracles not being of a dif- 

 ferent colour 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. 



ORDER HOMALOPTERA. Leach. 



PUPIPARA. Lat. 



Family HIPPOBOSCID^. Hippoboscidans. 



CCV. Genus HIPPOBOSCA. Linn. 



(446) 1. Hippobosca EauiNA. Equine Hippobosca. 



Hippobosca equina. Linn. Syst. Nat. ii, 1010, 1 ; Fn. Suec. 1921. Fab. Ent. Syst. iv, 415, 1 ; Syst. Antl. 337, 2. Lat. 

 N. D. D'H. N. xiv, 483. ; Crust. Arachn. et Ins. ii, 543. Pod. Mus. Grac. t. cxx. Scop. Cam. 1022. Frisch. Ins. 

 v, t. xx? Schrank. Enum. 1007. De G. vi, 275, 1, t. xvi, /. 1,2. Schteff. Icon. t. clxxix, /. 8, 9. Mull. Fn. Frid. 

 729. Schell. Dipt. 92, t. xlii, /. 1 . Stew. Elem. ii, 274. Panz. Fn. Germ, vii, t. 23. Shaw. Zool. vi, 401, t. cxiv. 

 Leach Encycl. ix, 130 ; Eprob. 9, t. xxvi, /. 4 — 7. Sam. Compend. 302, t. ix, /. 11. Kirb. and Sp. Introd. to Ent. i, 

 227. Lam. An. sans Vertebr. iii, 347, 1. 



ilouff. Ins. 59? Reaum. Ins. vi, 569, t. xlviii. Sulz. Ins. t. xii, f. 141. Geoff. Ins. ii, 547, 1, t. xviii, /. 6. 



WAofthe body {3^ag;£} line, 



Locality not mentioned. 



DESCRIPTION. 



Body flat; subpubescent, dirty-yellow, spotted with brown, with whitish signatures. On the 

 forehead, between the eyes, is a brown quadrangular spot shaped like what are called skates eggs, 

 with four projecting points at the angles : abdomen underneath pale, anus hairy : tarsi with four black 

 claws, the inner ones shorter and truncated : wings much longer than the body. 



One of the characters assigned to this genus by Fabricius is the want of stemmata, but if the 

 present species is examined under a powerful magnifier, one will be discovered at the posterior internal 

 angle of each eye. 



