( ^01 ) 



vci'sely 111 Lilt ifiiriiiiite. Eighth tergite iiiesiiill\ lui'iiiliruiiaceuiis, thr islruuglv 

 chitinous ]ilate deeply inuised. 



L:irv;i (flu-, by Butler, I.e.) : green, first three sugiueiits with white ilurso- 

 lateral line, following segments with yellowish side-bands ending in white patches 

 which are liordered red in front ; horn almost straight. 



C'hrysiilis apjiarently without frontal tubercles. 



Ilab. North India : Sikhira : Assam. 



In the Tring Museniu 14 ri 6 , lU ? ? from : ISiUhim, some in June and Jnly ; 

 Silhet (Mowis ; loc, correct?). 



If-U. Oxyambulyx substrigilis (PI. A'lII. f. 1. 2, 6). 



*S/,/ii„j {Ambu/i/.c) >!uh:<trkillif. AVestn-ood, Cnl. Or. Eiit. p. Ol. t. .'W. f. L' (J) (l8iH) (8ilhet; — 

 Mus. Brit.) 



cJ ? . The species is easily distinguished from the other Oxijamhulij.h by the 

 large black or tawny basal patch of the hindwiug. It agrees in pattern best with 

 C. litarata, both species being devoid of the round subbasal costal spot on the 

 forewing so conspicuous in mactdlfera, ochracex, sericeijjennis, etc. The dorsal 

 line of the abdomen is distinct ; it is not dilated to a patch ou the eighth tergite. 

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

 prolongation of the line W. The foretibia has spines at the end. 



6. Tenth sternite (PI. XXIII. f. II) mesially sinnate, the sinus smaller than 

 in Uttirata, /jlacida, etc. Eighth sternite mesially produced into a truncate lobe 

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

 over, internally a pointed tubercle or tooth, which is jnst visible in a ventral 

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

 individually : it consists of a ventral and a submesial I'idge ; the ventral ridge is 

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

 |iointed, curved, somewhat twisted process /jm, which stands nearly vertically upon 

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

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

 a distal ventral process, which is either pointed, gwdually tapering to the end 

 (PI. XXXII. f. 4. o), or is broadly spoon-shaped (PI. XXXli. f. 2. :i). The penis- 

 sheath (PI. XXX. f. 3. 4. .3) is ventrally membranaceous for several millimetres; along 

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

 sheatii is heavily chitinised, and is producedinto a subcylindrical and more orless 

 pointed and bent process of geographically variable length, the proces-s' being longest 

 iu Borneau individuals (we have not seen a 6 from the Philippines) an 1 shortest 

 iu North Indian specimens : from the mouth of the sheath protrudes a spine-like 

 process situiited upon the membrane of the duct (pnshed out with thi,' duct in 

 Pi. XXX. f. 4). 



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

 ridge in front of the orilice. 



Larva (of 0. ■•mb.ttr. aurijjc//i(i.i, Ugarud by Jloore, see below) green, a white 

 tmbdorsal line from prouotum to horn, six yellowish oblique side-bauds, a whitish 

 vtutro-lateral line, interrupted ; horn stout. —Food-plant ; Jjiptorovarjjus. 



(Jhrysulis also figured by Moore, cremaster prominent ; apparently no tubercles 

 on head. 



Ilab. North India to the i\ndanians, Philippines and Java. 



Five subspecies. 



