18/8.] MR. F. MOORE ON THE LITHOSIID.E. 



1. A Revision of certain Genera of European and Asiatic 

 Lithosiidse, with characters of new Genera and Species. 

 By P. Moore, F.Z.S., Assistant Curator, India Museum, 

 London. 



[Received October 29, 1877.] 



(Plates I.-III.) 



Family Lithosiidse. 



Subfamily HypsiNjE. 

 All the genera in this subfamily possess a peculiar stridula- 

 tory apparatus in both sexes. This is distinctly visible on the 

 upperside of the posterior margin of the fore wing, and as viewed 

 from the underside of the wing appears as a short oval nacreous 

 cavity, situated between the submedian vein and the extreme margin, 

 along the upper edge of which projects a raised longitudinally oblique 

 fold, which is smooth in some, and transversely scabrous in others ; 

 and on the upperside of the hind wing is a patch of scabrous scales, 

 or a short transverse outwardly-curved raised scabrous bar, which, 

 by the motion of this wing, evidently plays upon the raised fold over 

 the edge of the cavity, and produces* a stridulating sound. 



Hypsa, Hiibner, Verz. bek. Schm. p. 172. 

 Hypsa canaraica, n. sp. 



Female. Upperside — fore wing cinereous brown ; veins white ; base 

 of wing ochreous and spotted with black ; a whitish clavate streak 

 from lower end of the cell j cilia cinereous : hind wing white, with 

 broad black marginal band crossed by white veins ; four black discal 

 spots and a short anal streak ; cilia whitish. Thorax ochreous, 

 with small black spots ; abdomen brighter ochreous, with a dorsal 

 and lateral row of black spots. Underside cinereous brown, basal 

 half of fore wing white, with two broad black spots within, and a third 

 below the cell ; hind wing as above, with the marginal band extend- 

 ing along the costa. Near to 77. heliconia. 



Expanse 2 inches. 



Canara {Ward). In coll. F. Moore. 



Hypsa sericea, n. sp. 



Male. Upperside pale silky ochreous-yellow ; cilia whitish : fore 

 wing with the base brighter and dotted with black ; an indistinct 

 whitish spot from lower end of the cell : hind wing with costal border 

 whitish ; a broad cinereous brown marginal band and two confluent 

 longitudinal discal streaks. Body pale ochreous-yellow ; abdomen 

 brighter with dorsal and lateral row of black spots ; palpi with 

 black terminal point and two lateral spots ; legs grey, streaked with 

 black. Underside cinereous brown ; fore wing with yellow hind 

 margin and basal costal streak ; hind wing; with marginal band and 



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