585. 

 ORNITHOMYIA FRINGILLINA. 



Order Omaloptera. Fam. Hippoboscidae. 



Type of the Genus, Hippobosca avicularia Li/m. 

 Orxithomyia Lat., Lea., Meig., Curt. — Hippobosca Linn. 



AntenncB porrected beyond the head, inserted in front of the face 

 between the eyes, incrassated at the base, terminating in a some- 

 what conical concave hood, pubescent and furnished externally 

 with very long rigid bristles, and covering a coriaceous trans- 

 parent lobe on the inside (3, the profile). 

 Labrum long slender hollow and curved (2 h). 

 Tongue long attenuated and very acute (r). 

 Labium as long, stouter curved and hollow, receiving the tongue 

 and labrum {g). 



Maxillce exserted, foi-ming 2 large coriaceous lobes, slightly 

 curved, pilose, rounded at the apex, which is furnished with a 

 very long bristle (4 d). 



Mentum large and oblong, with 2 large rounded bristly lobes at 

 the anterior angles (4). 

 Head depressed, nearly orbicular : eyes large, lateral, horizontal a?id 

 ovate : ocelli minute and sunk, 3 in triangle at the base of the head. 

 Thorax suborbicular, anterior margin slightly concave, the angles 

 mucronated or produced : scutellum transverse-lentiform. Abdomen 

 short, leathery, semiorbicular or trigonate, and narroived at the base. 

 Wings ample, parallel and incumbent, elongated and rounded, toith 

 strong costal and basal nervures and 3 fine ones extending to the pos- 

 terior margin. Halteres minute capitate and concealed. Legs strong : 

 thighs broad, especially the anterior : tibiae narrowed at the base, 

 posterior the longest : tarsi 5-jointed, basal joint the longest in the 

 hinder feet, 3 following very short, the 4th cordate, 5th stout and 

 clavate : claws strong, curved and cleft nearly to the base, so as to 

 form 2 long and 2 short claws : pulvilli large, xvith a feathered 

 bristle beneath (Sf, hind leg). 



Fringillina Matt. MSS. — Curt. Guide, Gen. 1356.4. 



Ochreous, inclining to bright green ; hairs black : maxillae, e5'es, 

 a spot on the base of each antemia and another where the ocelli 

 are placed, piceous : head and thorax shining ochreous. faintly 

 variegated with brown, leaving a pale line down the back : ab- 

 domen dull green, pilose : wings iridescent, slightly smoky, 

 with a darker large oval spot at the apex ; nervures black : legs 

 verdigris-green ; tibiae with a black streak outside : claws and 

 upper side of terminal joint of hinder tarsi black. 



In the Cabinets of Mr. A. Matthews and the Author. 



Ornithomyia is one of the groups formed from Linnaeus's 

 genus Hippobosca, but from that and Haemobora our genus 

 is distinguislied by the claws, the more developed antennse, 



