210 On a new Species o/" Papilio. 



lirata, Sowb., possesses a well-defined sulcus, and the ribs 

 seem more acute than are those of Buttoni; candidula, Gask., 

 is larger and whiter, with more frequent costse ; producta, 

 Gask., as its name implies, is produced at its extremities, and 

 the ribs are of a different character, very acute and thin. 

 There is no sulcus, however, in this species. The ribs, like- 

 wise, of pellucidula, Gask., are far more numerous, and the 

 substance more delicate than in our shell, which it affords me 

 sincere pleasure to be able to dedicate to Mr. F. L. Button, 

 its discoverer. 



XXVII. — Description of a new Species of Papilio from Bwool, 

 North Celebes. By H. Geose-Smith, F.E.S., F.Z.S., &c. 



Papilio Dixoni. 



? . — Upperside. Anterior wings rather pale fuliginous 

 brown, darker at the base and the costal and outer margins ; 

 the dark areas more restricted than in the same sex of 

 P. Kiihni, Honrath, the veins and rays in the cell and be- 

 tween the veins also dark fuliginous brown. Posterior wings 

 pale fuliginous brown, with the base and outer third darker ; 

 the crimson markings on the underside showing indistinctly 

 through the wings. 



Undtrside. Anterior wings as above. Posterior wings 

 brownish black, with a pale crimson irregular band a 

 little beyond the cell, extending obliquely from near the 

 abdominal margin to the upper median nervule, much nar- 

 rower than the crimson band in a similar position on the 

 underside of the posterior wings of P. Kiihni ; outside this 

 band crossing the disk, between the veins, is a row of four 

 large pale crimson lunules, of which the first and fourth are 

 the narrowest. 



Expanse of wings A\ inches. 



In the collection of Mr. Grose-Smith. 



Nearest to the female of P. Kiihni, which it resembles in 

 shape. This butterfly was captured by Mr. Frank Dixon 

 about 30 miles inland at an elevation of 800 feet. 



