1882]. FROM THE N.W. HIMALAYA. 259 



spatular tail ; cell long, narrow, pointed at the end. Antennae short, 

 gradually thickening to the end. 



Larva with several short tubercles on each segment. Pupa broad 

 laterally ; head broad and slightly cleft in front ; thorax convex 

 above and beneath, angular at the side ; vring-cases dilated laterally ; 

 dorsal segments with foliaceous lateral appendages. 



Type B. philoxemis. 



Byasa philoxenus. (Plate XII. figs. 5, 5 a, larva.) 



Papilio philoxenus, Gray, Zool. Misc. p. 32 (1831); Lep. Ins. 

 Nepal, p. 5, pi. 2; Westw. Cab. Orient. Eat. pi. 40. f. 2. 



Larva 2j inches long, pale purple-brown ; head and legs shining 

 black ; head small, corneous, sparsely covered with short hair ; second 

 segment with two short tubercles on each side, and a transverse 

 flattened corneous tentacular sheath above the head ; third, fourth, 

 fifth, and sixth segments each with eight short tubercles (four on 

 each side), the dorsal series longest ; seventh, eighth, ninth, and 

 tenth segments each with six tubercles, and eleventh, twelfth, and 

 thirteenth segments each with four shorter tubercles ; each tubercle 

 red at the apex, and purple black-streaked at the base ; intervening 

 space between the tubercles with a transverse and a dorsal series of 

 paler purple-black spots ; these markings all with pale borders ; 

 seventh and eighth segment each with a lateral, short, broad oblique 

 white band. 



Pupa reddish-ochreous, broad laterally ; head broad and slightly 

 cleft in front ; thorax convex above and beneath, angular at the 

 side ; wing-cases dilated laterally ; dorsal segments with foliaceous 

 lateral appendages. 



The above descriptions of the larva and pupa are taken from 

 specimens found by Mr. Hocking " feeding on a creeping pitcher- 

 plant {Nepenthes''.) on September 20th, at an elevation of 6200 feet. 

 The larvae changed to pupae on Sept. 27, the pupa making a 

 squeaking noise when touched." 



Byasa ravana. 



Papilio ravana, Moore, Catal. Lep. Mus. E.I. C. i. p. 96 (1857). 

 Papilio x>hiloxenus, var., Westw. Cab. Orient. Ent. pi. 40. f. 4. 



Menelaides aristolochi^. 



Papilio aristolochicE, Fabr. Ent. Syst. p. 443 (1775). 

 Papilio diphilus, Esper, Ausl. Schmett. pi. 40. f. 1, $ . 

 Laertias pammon. 



Papilio pammon, Linn. Syst. Nat. i. 2, p. 746(1767), 6 • 



Papilio polytes, Linn, ibid., $ . 



" Larva on lemon-tree, June 19th. The perfect insects (male 



d female of pammon form) fly from March to December, at an 

 elevation of 6000 feet The polytes form, $ , is more restricted to 

 the hot valleys, not appearing before June, and very rarely found 

 above 4000 feet." 



17* 



