WALKEB ON DIPTEKA or AHIT ISLANDS. 125 



the antennae conical, very short, arista bare; thorax attenuated in 

 front, with a transverse inteiTupted black line hindward ; abdomen 

 longer than the thorax, lanceolate hindward ; fore legs short, posterior 

 legs long ; tarsi white, very short ; anterior tibial piceous ; middle 

 femora rather thicker than the hind pair ; wings limpid, grey towards 

 the tips, with a pale luteous middle band ; veins testaceous, cubital 

 and praebrachial converging towards the tips of the wings, discal 

 transverse vein straight, parted by less than its length from the border 

 and by about thrice its length from the preebrachial transverse. 

 Length of the body 3^ lines j of the wings 5 lines. 



Subfam. Psilides, Walk. 

 G-en. LissA, Meigen. 



158. LissA CYLiNDRicA, n. s. Mas. Cyanea, gracilis, cylindrica ; 

 antennis piceis basi albidis, arista plumosa; abdomine piceo basi 

 apiceque cyaneis ; pedibus albidis, femoribus posterioribus nigris apice 

 albidis, femoribus posticis subtus spinosis, tibiis posticis nigris ; alis 

 subcinereis apice subftiscis ; halteribus albidis apice nigris. 



Male. Blue, slender, cylindrical. Head broader than the thorax ; an- 

 tennae whitish, third joint piceous, arista plumose ; abdomen piceous, 

 slightly increasing in breadth to the tip, blue at the base and at the 

 tip, hind borders of the first and second segments whitish -, legs 

 whitish, posterior femora black, whitish at the base and towards the 

 tips, hind femora spinose beneath, hind tibiae black ; wings slightly 

 greyish, brownish towards the tips; veins black, praebrachial and 

 perbrachial very near together for more than half their length, discal 

 transverse vein straight, parted by more than its length, and by about 

 four times its length from the praebrachial transverse; halteres 

 whitish, with black tips. Length of the body 3-^- lines ; of the wings 

 5 lines. 



Gen. Neeiijs, Fahr. 



159. Nerius duplicatus, Wied. Auss. Zweijl. li. 553. 8. 

 Inhabits also Java. 



Subfam. Oscinides, Haliday. 

 Gen. OsciNis, Fair. 



160. OsciNis LiNEiPLENA, n. s. Mas. Fusca; capite subtus testaceo 

 apud oculos albo, vitta frontali alba ; thorace pectoreque lineis sex 

 albidis ; abdomine sordide testaceo, pedibus albidis, tibiis tarsisque 

 apice femoribusque anticis nigris ; alis subcinereis, halteribus albidis. 



Male. Brown. Head testaceous in front and beneath, w^hite about the 

 eyes, with a white stripe on the front ; thorax and pectus with six 

 whitish stripes on each, thorax with an indistinct middle testaceous 



