CAMPTOMASTYX. HYDRORYBINA. 239 



claspers covered with a large tuft of hair. Fore wing with veins 

 3, 4, 5 well separated at origin ; 7 straight and well separated from 

 8, 9, 10. Hind wing narrow; the cell short; veins 3, 4, 5 

 radiating from the angle ; 6, 7 stalked. 



SECT. I. Antennae of male with the thickening at about 

 one-third from base. 



4746. Camptomastyx hisbonalis, Wlk. Cat. xviii, p. 707. 

 Botys pacalis, Leech, Entom. 1889, p. 69, pi. 4, fig. 15. 

 Diplotyla longipalpis, Butl. 111. Het. vii, p. 95, pi. 135, fig. 14. 



d . Dark rufous suffused with 

 fuscous ; male with the anal tuft 

 ochreous. Fore wing with obscure 

 nearly straight antemedial line; 

 the discal area more rufous ; a 

 minutely dentate postmedial line 

 slightly bent outwards between 

 V veins 5 and 2, along which it 

 Camptonasty/hisbonalis, <?. |. . "tracted to below angle of cell. 



Hind wing darker. 



Hob. China ; Simla ; Dharrnsala ; Khasis ; Nagas ; Borneo. 

 Exp. 22millim. 



SECT. II. Antennae of male with the thickening and bend at 

 two-thirds from base and short. 



4747. Camptomastyx exuvialis, Snell Trans. Ent. Soc. 1890, p. 627. 



c? . Dark brown. Fore wing with traces of medial yellowish 

 spot from costa to median nervure, and of a postmedial spot from 

 costa to vein 6. 



Hob. Sikhim ; Khasis. Exp. 26 millim. 



Genus HYDRORYBINA, nov. 



Type, H. poluscilis, Wlk. 



Range. Japan ; Sikhim ; Assam ; Calcutta ; Ceylon ; Borneo. 



Palpi porrect, extending about three times the length of head 

 and downcurved at extremity; maxillary palpi about half the 

 length of labial and acute ; frons flat and oblique : antennae of 

 female ciliated ; tibiae with the outer spurs about two-thirds length 

 of inner. Fore wing long and narrow ; vein 3 from before angle 

 of cell ; 4, 5 from angle ; 7 straight and well separated from 

 8, 9, 10. Hind wing with the cell short ; vein 3 from angle ; 

 4, 5 approximated for a short distance ; 6, 7 from upper angle. 



4748. Hydrorybina polusalis, Wlk. Cat. xviii, p. 703. 



$ . Fiery rufous. Fore wing with the costa dark ; a dark 



