286 HIPPOBOSCroAE (diptera pupipara.) 



Male. Length (on slide) 8.5 mm. General form and 

 characters of head and thorax as in tlie female except that the 

 la^nellate process of the anterior tibiae is lackirui. 



Ahdovien (fig. 2e) differing from that of the female in 

 the presence of well-marked dorsal plates, there being two 

 large median plates, succeeding these a broad plate which 

 extends entirely across the abdomen and succeeding this a pair 

 of small plates which extend partially to the ventral side. 

 Ventral side as in the female, there being no vestiges of 

 claspers. Internal genitalia small. 



Notes. As compared with 0. soror this is a very strongly- 

 marked form, tlie comparatively huge size, the absence of 

 abdominal plates in the female and the other characters given 

 distinguishing it at once. 



Explanation of Plate It. ■ ■ 



Fig. 1. Orntthoica beccariina Eondani. Female, wings removed. 



,, 2. Ornithoctona soror new species. A wing; B first segment of 

 posterior tarsus; C clypeal region; D processes of mesos- 

 ternum. Ornithoctona magna new species ; E abdomen of 

 male; F lamellate process at apex of anterior tibia of 

 female; G clypeal region; H processes of mesosternum. 



,, 3. Ornithophila makilingensis Ferris. Male, wings removed. 



,, 4. Ornithoctona soror new species. Female, wings removed. 



