LA.SIA. PTEIIODONTIA. 165 



subcylindrical, narrower at base, tip almost rounded; 3rd shining 

 chestnut-brown, base yellowish, lance-shaped, the tip drawn out 

 into a long concolorous style, which is about as long as the whole 

 antenna; 2nd joint with yellow hairs. Face, except immediately 

 below antennae, deeply sunken between the eyes, shining bla-k, 

 bare, narrower on upper part; occiput grey, covered along the 

 margin apparently with long bristly bright yellow scale-like 

 pubescence.* Thorax moderately shining black on disc, with 

 apparently a slight aeneous tinge, the dark colour extending 

 forward in a broad b'and to anterior margin ; rest of dorsum 

 bright yellow, including shoulders, humeri, and mesopleurae ; 

 ground-colour of scutellum brownish yellow, that of remainder 

 of the pleurae grey or yellowish grey ; whole thoracic dorsum, 

 scutellum, and pleurae covered with dense long bright yellow 

 bristly scale-like pubescence, which becomes a little paler over- 

 shoulders and lower part of sides of thorax, and more orange over 

 scutellum and on hinder part of thoracic dorsum. Abdomen 

 yell.nvish brown, lighter on 1st segment and deeper on 3rd and 

 4th; a'l segments with a well-defined lemon-yellow hind border 

 of moderate width, broadest and least well-defined on 1st, and 5th 

 segments, on which latter it occupies more than half the surface. 

 "Whole dorsal surface covered with moderately short light brown 

 pubescence, and towards tip some microscopic pale yellow depressed 

 hairs. Venter mainly yellowish, with a blackish median band on 

 hinder part and some transverse black marks on 3rd and 4th and 

 following segments ; genitalia inconspicuous, hidden. Legs * holly 

 lemon-yellow with short soft concolorous pubescence. Wings 

 practically clear to base, distinctly ribbed; veins brown ; thoracic 

 hquuuae pain yellow, with long bright yellow fringe. 



Described from a single specimen in the British Museum, 

 labelled simply "Ind." 



Genus PTERODONTIA, Gray. 



Pterodont.ia, Gray in Griffith's Anira. Kingd. xv, p. 779 (1832). 

 Plerethntin, Macquart, Hist. Nat. Dipt, ii, p. 514 (1835). 



GBNOTYPE, Pterodmtia ftnvipcs, Gray ; by original designation. 



Body of the normal Cyrtid type, pubescent. Head extremely 

 small, nearly wholly occupied by the eyes, which are very large, 

 contiguous in both sexes, densely pubescent; three ocelli; mouth- 

 opening more or less concealed; proboscis short. Antennae 

 situated at bottom of h -ad, 3-jointed; 1st cylindrical, 2nd short, 

 3rd conical, with (according to Macquart) a long bare style, but 

 in P. <tor*alis with three very long fine stifl' hairs.t Thoracic 

 lobes developed ; thoracic squama? enormously so. Abdomen 



* The head is so closely affixed to the thorax that it is difficult to state 

 whether the adjacent pubescence belongs to the thorax or the occiput. 



t These might easily cling together, giving tho appearance of a long bare 

 style. 



