No. 4. — 1848.] SKETCHES IN NATURAL HISTORY. 



57 



taken, were presented to me by Woodford Birch, Esq., and 

 taken by him at Kitulgala in the Ambagamuwa range. 



Expanse of wing, about five inches : depth, two and a-half ; 

 superior wing, velvet black, with a whitish uneven triangle 

 extending over three parts of the surface towards the ex- 

 terior margin, broken and crossed by the nerves which are 

 black : inferior wings also velvety black, with a white 

 centre as in Potydorus, but extending higher into the dis- 

 coidal cell ; round the exterior margin are five narrow reddish 

 lunules ; tails long and spatulate. Larvae unknown. The 

 perfect fly is on the wing in the months of March and April, 

 frequenting shady roads and open spaces in the jungle. It 

 is very wary, and flies with great rapidity on being alarmed. 



P. Marianna (Layard). This lovely and graceful insect 

 was first observed by me at Kitulgala, between Amba- 

 gamuwa and Yatiyantota. It is the only instance we have 

 in this country of that group of Papilionidse termed by 

 collectors " small tails ; " as a specimen also it is unique, 

 and I am indebted to the liberality of Woodford Birch, Esq., 

 for its possession. 



Wings, from three inches to three and a-quarter in expanse; 

 from shoulder to end of tail two inches two lines ; length of 

 tail nine lines. Ground colour, greenish white : superior wings 

 with seven black bands varying from about one to one and a 

 half lines apart ; the first, about one and half lines from the 

 shoulder extending from the anterior to the interior margin ; 

 the second rather beyond the anal nerve; the third, fourth 

 and fifth, across the discoidal cell ; the sixth into the anal 

 area ; and the seventh occupying the whole border of the 

 exterior margin, from the apicial to the anal angle. Inferior 

 wings with a series of black marginal lunules, the second 

 and third extended down the tail, which is slender and 

 pointed : a black patch crosses the discoidal cell near the 

 seutellar angle, and the marginal lunules are surmounted 



