1908. J Records of the Indian Museum, 293 



16. Desvoidea obturbans, Walker. 



Sj^lhet [Major Hall] and I^ushai Hills \E. C. Macleod], Assam. 

 Four specimens of typical form. 



1 6a. Desvoidea obturbans, Walker, var. fusca, Theob. 



Sylhet, Assam [Ma/or ^a//j, March (2), April (5), May (3), 

 June (2); lyushai Hills, Assam l^". C. Macleod], August (11); 

 Calcutta, May (2), August (34), at light, September, October, 

 November and December. 



j6b. Desvoidea obturbans, Walker, variegated-scutellum variety. 

 Sylhet, Assam, January (2), May (12), June (3) ; Calcutta, May 

 (i), August (4), September (i), October (i) ; Lushai Hills, Assam, 

 July (2) ; Manipur, August (i), in bungalow. 



Note. — All variations in colour between the true obturbans of 

 Walker and the fusca of Theobald seen in these specimens^ and 

 hence the latter species is sunk as a variety. 



*Genus Brevirhynchus, gen. nov. 



Head clothed with fiat scales, also the scutellum, the latter 

 large. 



Thorax with narrow-curved scales at the edges of the mesono- 

 tum; prothoracic lobes and pleurae with fiat scales. Proboscis of 

 9 short, thick, about one-third of the length of the whole insect, 

 curved twice; of the male thinner and slightly longer in proportion, 

 palpi of the $ two-thirds the length of the proboscis, apparently of 

 two segments, the apical one long; palpi of the a" longer than the 

 proboscis, acuminate, no hair- tufts, of four segments, the two last 

 nearly equal. 



Wings with dense scales, some TcBuiorhynchus-like. Fore 

 ungues of male unequal, the larger uniserrate; mid equal and 

 uniserrate. 



A very distinct genus easily told by the short, thick sinuous 

 proboscis of the $ , and the relatively long palpi as well as the 

 squamose structure of the thorax with its fiat lateral scales. The 

 mid ungues of the cf being equal is also characteristic. 



'*iy. Brevirhynchus magnus, sp. nov. 



Thorax rich brown in the middle with white border all around 

 the front and sides, pleurge densely white scaled; head black, 

 white around the edge and in the middle, the short thick proboscis 

 black ; the palpi black, nearly as long as the proboscis. 



Abdomen black with basal median yellow patches, snowy 

 white triangular lateral spots. The base of the triangles towards 

 the posterior borders of the seg.nents, but a black line of scales 

 between the fifth, sixth, and seventh spots yellow at the base, 

 venter with broad yellow basal bands, narrow black apical ones. 



