MELOPHAGUS. 289 



than the thorax, truncated at the tip ; sutures of the segments very indis- 

 tinct. Legs very stout, bristly, moderately long, wide apart. Tibiae a 

 little shorter than the femora ; tarsi much shorter than the tibire ; 

 ungues long, stout, curved, tridentate ; onychia small. Male. Ocelli 

 three. Wings long, very narrow, acuminated. Abdomen a little longer 

 and broader than the thorax, much truncated in the middle at the tip. 

 Fern. Eyes smaller than those of the male. Ocelli none. Wings short, 

 triangular ; praebrachial, pobrachial, and anal veins distinct to the bor- 

 der; discal transverse vein straight, oblique, parted by a little less 

 than its length from the prasbrachial transverse. 



1. Hirundinis, L. Fn. 1923 (1761); F.; Schr. ; Rossi; Fal. ; 

 Leach ; Latr. ; Meig. ; Mcq. ; Zett. Kirbyana, Leach ; Meig. ; Mcq. 

 Fulva aut testacea, alis sublimpidis, unguibus nigris. Long. 2-2^; 

 alar. 4^-5 lin. 



Tawny or testaceous. Wings nearly limpid ; veins tawny. Abdomen 

 sometimes ferruginous. Ungues black. 



Infests swallows. Generally distributed. (E. S. I.) 



Genus VI. MELOPHAGUS. 



MELOPHAGUS, Latr. Gen. iv. 36 (1809) ; Leach ; Meig. ; Mcq. ; 

 Westw. ; Blanch. Hippobosca p., L. ; F. ; Schr.; Gmel. ; Fal.; 

 Pz. Pediculus p., Frisch. Melophila, Nitzsch. MelopJiaga, Zett. 



Corpus parvum, depressum, coriaceum. Caput magnum, transversum, 



thorace paullo lathis, subtus trigonum. Frons antice tuberculata et 



subconcava. Facies brevis. Epistoma subconvexum. Oculi parvi. 



Ocelli nulli. Thorax parvus, sublinearis, tuberculatus. Ala nullae. 



Abdomen subrotundum, thorace paullo longius et multo latius. Pedes 



robusti. Ungues longi, validi, curvati, bidentati. 



Body of small size, depressed, tough, coriaceous, shining, hairy and 

 bristly. Head large, a little broader than the thorax, broader than 

 long, triangular beneath. Front tuberculated and bristly in front, 

 where the border is very slightly concave. Face short. Epistoma 

 slightly convex. Eyes small, oblong, slightly convex, bare, not promi- 

 nent. Ocelli none. Mouth as long as the head. Antennae like 

 tubercles. Thorax nearly linear, slightly convex, tuberculate, bristly, 

 not developed. Sternum broad. Prosternum much advanced. Wings 

 none. Abdomen nearly round, hairy, a little longer and much broader 

 than the thorax ; sutures of the segments very indistinct. Legs very 

 stout, bristly, moderately long, wide apart. Tibiae shorter than the 

 femora. Tarsi hardly shorter than the tibise. Ungues long, stout, 

 curved, bidentate. 



"The union of the valves of the sheath is so short that they 



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