174 XOCTUID.^. 



4525. Elydna pellicea. (Plate CXLI. fig. 19.) 

 Plecoptera pellicea, Swinh. A. M. N. H. (7) xi. p. 507 (1903). 



3 . Head and thorax pale pinkish grey with an ochreous tinge ; 

 palpi black at sides except at tips ; sides of irons and shoulders "with 

 black patches ; spurs and tarsi blackish with pale rings : abdomen 

 ochreous brown, the anal tuft yellowish, the ventral surface whitish. 

 Fore wing greyish ocbreous tinged with purplish pink ; a black point 

 at base of costa ; faint traces of an oblique waved antemedial line with 

 black point at costa ; a chocolate-brown conical patch on middle of 

 costa, its apex almost reaching median nervure and somewhat dilated 

 on outer side ; postmedial line very indistinct, bent outwards below 

 costa, then dentate and produced to slight blackish points on the 

 veins, incurved in submedian interspace where there is a black point 

 before it ; a truncate conical chocolate-brown patch on costa before 

 apex; faint traces of a minutely waved subterminal line; a series 

 of slight blackish points just before termen ; cilia brown with fine 

 pale lines at base and middle. Hind wing ochreous suffused with 

 brown, the cilia paler ; the underside ochreous white, the costal 

 area and terminal area to vein 2 irrorated with brown, a brown 

 discoidal lunule and indistinct curved postmedial line. 



Bab. Siam, Muok-Lek, 10,000 feet (Frukstorfer), 1 rf type. 

 Exp. 40 millim. 



*4526. Elydna costiplaga. (Plate CXLI. fig. 20.) 



ffidia cospiplaga, Beth.-Baker, Nov. Zool. xiii. p. 254 (1906). 

 ffypcetra costiplaga, Beth.-Baker, Nov. Zool. xv. p. 201 (1908). 



§ . Head and thorax red-brown mixed with grey ; palpi whitish, 

 the 2nd joint black on outer side except at extremity; Irons whitish ; 

 pectus and legs whitish suffused with brown ; abdomen red-brown 

 with slight rufous dorsal line, the ventral surface whitish tinged 

 with brown. Fore wing red-brown mixed with purplish grey ; a 

 small subbasal black spot on costa ; traces of an oblique waved 

 antemedial line with black spot on costa ; a conical chocolate-brown 

 patch from middle of costa to lower angle of cell, defined on outer 

 side by a sinuous black and white line on discocellulars ; postmedial 

 line indistinct and whitish from costa to vein 4, bent outwards 

 below costa, oblique to vein 6 where it is angled outwards, angled 

 inwards in discal fold and outwards at vein 4, then dark, strongly 

 incurved and bent outwards to inner margin, a black point before 

 it in submedian fold and a truncate conical chocolate-brown patch 

 beyond it from costa defined on outer side by the faint whitish 

 subterminal line which is oblique towards costa, slightly excurvcd 

 below vein 7 and at middle and ending at tornus; a series of faint 

 blackish points just before termen ; cilia dark brown mixed with 

 some greyish and with slight ochreous line at base. Hind wing 

 fuscous brown with a cupreous gloss ; cilia brown with a slight 



