364 Records of the Indian Museum. [Vol. XXII, 



truncate, somewhat rounded lobe. The anterior end of the thorax 

 was defined by an irregular, semicircular ridge and each side into 

 a prominent, flattened, slightly upturned lobe which was rounded 

 at the apex. Behind the anterior ridge there was a broad ill- 

 defined, transverse groove, and behind this the dorsal surface was 

 produced into a broad protuberance, the anterior part of which 

 was strongly ridged, while the posterior part was obliquely trun- 

 cate and the whole somewhat compressed. The posterior part 

 (the larger) was flattened above, concave at the sides and produced 

 into a small rounded lobe at the upper anterior angle at each side. 

 The abdomen was strongly curved and bore at each side a series 

 of prominent, rounded, flattened, upwardly directed lobes. The 

 wing cases were produced into strong keels above. 



The colouration was still more elaborate. The ground colour 

 was pale lutescent. On the anterior part of the thorax, just 

 behind the anterior ridge were a pair of somewhat elongate, white 

 rimmed black spots, which gave this region a strange resemblance 

 to a caricature of a monkey's face. The concave lateral region 

 of the thorax was variegated with deep chestnut and white, and 

 there was an irregular longitudinal stripe of the former colour 

 'unning along the variegated area not far from its inner margin. 

 The upper part of the flattened area was clearly chestnut with a 

 small round spot of the same colour on each side in the variegated 

 area above. From the chestnut area a fine stripe of paler tint 

 extended backwards, expanding between the front pairs of abdom- 

 inal processes. The abdomen was faintlj^ spotted with pale 

 brown. 



The butterfly hatched out at about 4 a.m. on the morning 

 of the 7th September. It took much longer in drying than the 

 following species, which began to flutter about two hours after 

 emerging. It began to flutter about four hours after hatching, 

 but its upper wings were still curved down along the upper margin. 



Papilio aristolochiae, Fab. (969).! 



igoy. Papilio aristolochiae, Bing., toin. cit., p. 20, text-figs. ,^a and 3c. 

 igog. Papilio aristolochiae, Jordan, torn. cii.. p. 38, pi. i6a. 



Barkuda, 7-ix-i9 ; 5-vi-20 ; ix-20. 



Hab. — India. 



Remarks. — This is usually a very scarce butterfly on the 

 island, but fresh specimens were seen in considerable numbers in 

 September, 1920. A single pair was captured round flowers of 

 Premna latijolia in June, 1920 and a single butterfly was reared 

 from the larva in September, 1919. The caterpillar was found 

 with that of P. hector on the Sword-Bean (C. cnsijornns). 



It was about half the size of the caterpillar of the preceding 

 species, and was somewhat similar in colour, but the pale 5'ellow 

 spots found on P. hector was here replaced by a similarly coloured 

 transverse line. It pupated on the 24th of August and the pupa 

 resembled that of P. hector in every respect, except that it was 



