201 



versely mull icuriLiiitf. Ei.s^iitli tcrtrite iiiesi;ill\ uiriiiliruiiiiex-uu:-, tlir struugly 

 chitinous jiliite deejily incised. 



Liirvii (fii;. by Butler, I.e.) : green, lirst tlin-e seiiiiieuts with wliite dorsu- 

 liiteral line, following- segments witL yellowish side-bands ending in wliite jjatehes 

 wliich are bordered i'<d iu front ; horn almost straight. 



Cbrysiilis ajiparently without frontal tidjereles. 



/fad. North India : tSikhim : Assam. 



In the Tring Museum 14 c?c?, lU ? ? from : .Sikhim, some in June and Jidy : 

 ISilhet (Mowis ; loe. e.orreet V). 



lt)4. Oxyambulyx substrigilis (PI. VIII. f. 1. -J, J). 



*S/,l,mx (Ambidi/j) .■<i>l,stn„ili.'< Westwood, Cal,. Or. Knt. p. CI. t. ;iO. f. l' (J) (184m) (Silliet ; — 

 Mus. Brit.) 



cJ ? . The species is easily distingnisheil from the other L'-ri/ainbtdi/j by the 

 large black or tawny basal patch of the hindwing. It agrees iu i)atteru best with 

 IJ. liturata, both species being devoid of the roiuid subbasal costal spot on the 

 forewing so cous|)icuous iu mactiUfera, ochrucej, serict'/jjennis, etc. Tlie dorsal 

 line of the abdomen is distinct : it is not dilate.! to a patch on the eighth tergite. 

 The apical line of the cell of the forewing is mostly so obliijue as to form a direct 

 ])rulongation of the liue K''. The foretibia has spines at the end. 



6. Tenth sternite (Fl. XXIII. f. 11) mesially sinuate, the sinus smaller than 

 iu liturata, /jkccida, etc. Eighth sternite mesially produced into a truncate lube 

 (PI. XXII. f 27), of which the augles are somewhat pointed, each bearing, more- 

 over, internally a jiointed tubercle or tooth, which is jnst visible iu a veutral 

 view of the segment. Ilarpe varying strongly geographically, and slightly also 

 individually : it consists of a ventral and a submesial ridge ; the veutral ridge is 

 either denticulated or entire ; the upper ridge is produced into a long, tapering, 

 pointed, curved, somewhat twisted jirocess /j/h, which stands nearly vertically upon 

 the plaue of the clasper ; the form of this process is not constant either individually 

 or geographically ; both the ventral and submesial ridges uuite distally to form 

 a distal ventral process, which is either pointed, gradually tapering to the eud 

 (PI. XXXII. f. 4. 5), or is broadly spoou-shaped (PI. XXXII. f. :.'. :3). The penis- 

 sheath (PI. XXX. f. o. 4. 5 ) is veutrally membranaceous lor several millimetres; along 

 this membranaceous part runs at each side a dentate fold ; the dorsal side of the 

 sheath is heavily chitinised, and is produced into a subcyliudrical and more or less 

 ])oiutedaud bent process of geographically variable length, the process being longest 

 in Borueau individuals (we have not seen a c? from the Philippines) an I shortest 

 iu North Indian sj)ecimeiis ; from the mouth of the sheath protrudes a spine-like 

 process situated upou the membrane of the duct (pushed out with the duct in 

 PI. XXX. f. 4). 



?. Vaginal plate (PI. XV. f. Oj characterised by a heavy, irregularly notched 

 ridge in front of the oritice. 



Larva (of 0. nabstr. aurijjc/i/ns, ^gmed by Moore, see below) green, a white 

 subdorsal liue from pronotum to horn, six yellowish oblique side-bauds, a whitish 

 ventro-lateral liue, interrupted ; horn stout, —Food-plaut ; Ijipterocarpus. 



Chrysalis also tigured by Moore, cremaster prominent ; apparently uo tubercles 

 on head. 



Ilab. North India to the Andaman>, Phili|)piiies and davu. 



Five subspecies). 



