80 AECTIID^. 



wings of this species, when saturated with benzine, shows no difference whatever from those 

 of Pliaos vigens, nor are any of the characters by whicli it is separated at all reliable. The 

 genus Phaos is also described as the Spilosoma of Stephens (the type of which is S. menthastri 

 of Europe) : the latter differs in the much more woolly clothing of the thorax ; broader and 

 comparatively shorter tcgulae ; more slender and longer antennrc ; narrower, longer, and more 

 scantily clothed palpi ; much more slender legs ; more robust abdomen, without lateral or 

 anal tufts ; comparatively longer and narrower wings, which arc also less densely scaled ; more 

 nearly approximated veins ; and totally different style of coloration, — in short it would be 

 difficult to find two genera of Arctiidse less alike, excepting in the general distribution of the 

 veins ; but if this character alone were recognized, the bulk of the genera of this family would 

 probably have to be placed together. 



Lachana ladakensis. (Plate CXXI. fig. 6.) 

 Lachana ladakensis, Moore, Ft-oc. Zool. Soc. 18S8, p. 398. 



Primaries pale yellowish brown ; basal third grey, bounded externally by an ill-defined 

 oblique darker band ; an ill-defined dusky spot at centre of costa, followed beyond the cell by 

 a second lunate costal spot ; a black spot on the discocellular veinlet ; an irregularly zigzag 

 siibmarginal greyish-brown band and a regular border of the same colour ; fringe spotted 

 with brown : secondaries greyish brown, with a broad dark brown external border and pale 

 fringe : body black, clothed with long silver-grey and pale brown hairs; antennae with orange 

 basal joint, shank pale brown, pectinations dark mahogany- brown. Wings below paler, most 

 of the markings on the primaries obliterated; the secondaries pale yellowish brown, with 

 smoky-brown external border and buft'-colourcd fringe : body below blackish, clothed with 

 pale brown hairs. Expanse of wings 2G millini. 



Ladak. 



At first sight one would suppose this species to be more nearly related to Antarctia or 

 ('i/ciiia than to Phaos; but a close examination of its structure proves its affinity to the latter : 

 Mr. ^loorc unaccountably refers it to the Liparidie. 



DIPHTERA, Ochs. 



Diphtera fasciata. (Plate CXXIl. fig. 1.) 



Di|)litcra fasciata, Moore, Proc. /ahiI. Soc. 1S8S, p. -108. 



Nearest to D. puUida : primaries dull grcyisli green ; seven nu)stly equidistant black 

 costal markings, the third and seventh broad and elongated, the others mere dots or small 

 .spots ; three additional basal spots ; an irregular white-edged black marking at base of inner 



