On new Pyralidae /row the Khasia Hills. 107 



Mastogeni'us, sp. 



Niger, nitidus, convexus, crebre punctatus. 

 Long. 2|- mill. 



ffab. Hong Kong. 



This species much resembles M.felix, but is black. Tiie 

 thorax is more rounded at the sides, much resembling the 

 thorax of some Cardwphori. The presternum has a distinct 

 trace of the antennal groove; the surface appears smooth, 

 the punctures distinct, separated from each other by about 

 two diameters of a puncture ; the fine lines bordering the 

 sternum gently curved. Tarsi with the basal joint about 

 equal to the two following taken together. 



Mastogenius^ sp. 



Niger, Tiitidus, crebre sat fortiter punctatus. 

 Long. 3 mill. 



Hah. . Received from the " Entomological Club." 



Very close to the preceding, but much more strongly 



punctured. The head is much more distinctly sulcate. The 



thorax a little more convex. 



XVI. — New Species o/'Pyralidae from the Khasia Hills. 

 By W. Warren, M.A., F.E.S. 



[Continued from vol. xvii. p. 466.] 



Subfamily Ptmaustin^. 



Genus Sylltthria, Hiibn. 



Syllythria metallica, sp. n. 



Fore wings yellow ; the costa and hind margin broadly 

 metallic purple ; a black discal spot and another before it in 

 the cell ; antemedian, median, and postniedian lines blood- 

 red, united in places by bluod-ied lines along the veins; the 

 purple marginal line tinged with red internally ; fringe 

 yellow, with red base. Hind wings white, somewhat yellow- 

 ish tinged ; a metallic purple blotch on hind margin in 

 middle, preceded by some red scales. Head, face, thorax, 

 and abdomen yellow, witli red scales intermingled. The 

 whole surface of both wings and of body is dusted with 



