LIST OK HOMOl'TEHOUS INSECTS. 



18. Platypleuha Sphinx, Mas et Fem. 



Nerwn Iransversus lussubrectus,subnblitjmis, angulum subobtusum 

 fingens, 2o quinquies ejus longiludine divisus ; 2us subrectus, 

 valdi obliqwus, angulum valde obttisumjingens, \o plus dupld 

 longior ; Sus subrecttts, valdi obliquus, angulum valde acu- 

 tum fingens ; 4m.« subcurvus, nbliquus, angulum subacutum 

 fingens, Si dimidio paulld longior. 

 Second marginal aieolel as lonjf as the first : first cross-vein 

 nearly straiffht, slightly slanting, foriuing a very slightly obtuse an- 

 gle, parted from the second by about five times its length ; second 

 nearly straight, very slanting, forming a very obtuse angle, much 

 more than twice the length of the first ; third nearly straight, very 

 slanting, forming a very acute angle ; fourth slightly curved, slant- 

 ing, forming a slightly acute angle, a little more than half the 

 length of the third ; fifth curved, forming a slightly acute angle. 

 In the left wing of an insect of this species the third cross- 

 vein is not more than half the length of that in the other wing. 

 Body pale lawny, tinged with white, clothed with short whitish 

 hairs : head narrower than the fore-chest ; crown adorned with two 

 brown bands; face very slightly convex: mouth tawny, with a 

 brown tip, reaching the hind-hips : eyes not prominent: feelers dark 

 tawny: fore-chest broadest in the middle; hind-sculcheon much 

 widened, and almost angular on each side : scutcheon of the middle- 

 chest adorned with four obconical dark brown marks, the outer pair 

 long, the inner pair short and pointing towards two dots of the same 

 colour : hind border very slightly excavated : abdomen obconical, 

 a little longer than the chest : opercula close ; drums of moderate 

 size, nearly meeting, less than half the length of the abdomen : 

 legs pale tawny; tips of the shanks darker; chiws pitchy, tawny at 

 the base: fore-thighs armed with tawny teeth, which hardly rise 

 above the surface ; hind shanks beset with tawny spines, whose tips 

 arc pitchy : fore-wings whitish, brownish-tawny towards the base, 

 and having elsewhere some irregular pale brown marks, which, here 

 and there, include while spots; veins yellow; hind-wings brown, 

 mostly yellowish-while towards the base, and having a large yellow- 

 ish-while spot in the disk, white at the tips, and adorned with 

 a white spot on the hind border, which elsewhere is brown ; flaps 

 yellowish-white, with broad brown borders. Length of the body 8 

 lines ; of the wings 21 lines. 



n. North Bengal. From Miss Campbell's collection. 

 b. North India. From Mr. Warwick's collection. 



