1894.] L, de Niceville — Butterflies from the Inch- Malayan region. 47 



of indistinct white spots, in pairs, between the median nervules near 

 the outer margin " on the npperside, those on the underside are said to 

 form '* two rows, united into distinct hastate spots pointed inwards." 

 The chrome-yellow anal spot in P. perses is half the size of that in 

 P. hewitsonii, and the wings of my specimen are also narrower. 



Described from a single example in my collection received from 

 Hofrath Dr. L. Martin, who has other specimens in his own collection. 

 It is a perfect mimic — except for the chrome-yellow anal spot to the 

 hindwing — of Euplo3a (Penoa) menetriesii, Felder, which is found flying 

 with it. 



41. Papilio {Menamopsis) petra, n. sp., Plate IV, Fig. 5, cf . 

 Habitat : Gayoes Mountains, N.-E. Sumatra, 

 Expanse : c?, 4*1 inches. 



Description : Male. Upperside, foreiving fuscous, the area at the 

 anal angle broadly paler ; a curved discal series of eight inwardly - 

 pointed white streaks placed one each between the veins ; the series 

 anteriorly well removed from the outer margin of the wing, approaching 

 the anal angle postei'iorly ; the spots forming the series largest anteri- 

 orly, rapidly decreasing in size posteriorly ; each spot bisected longi- 

 udinally by the internervular fold. Hindioing fuscous at the base 

 only, the rest of the wing much paler ; a submarginal series of sullied- 

 white streaks placed in pairs between the veins, well removed from the 

 outer margin except the two anteriormost ones, which approach it 

 closely ; a small round chrome-yellow spot placed on the anal angle, 

 anteriorly crowned with a black lunule. Underside, both ivings concolo- 

 rous, shining pale fuscous. Forewing with the discal series of white 

 streaks smaller and becoming obsolete. Hiudiving with the submar- 

 ginal series of white streaks more prominent, each streak whiter, 

 larger, and almost reaching the outer margin. Head and hodij as 

 usual. 



Closely allied to P. liewitsonii, Westwood, from Borneo, and 

 P. perses, de Niceville, from the Gayoes Mountains of N.-B. Sumatra. 

 From both it differs in its larger size, and in the presence of the 

 conspicuous discal series of white streaks on the upperside of the 

 forewing. It differs from P. hewitsonii in having the submarginal 

 series of white streaks on the hindwing, these being obsolete or absent 

 in that species ; the anal spot is also very much smaller in P, petra. 



Described from an unique example in the collection of Hofi'ath 

 Dr. L. Martin, brought down from the mountains by his Gayoes col- 

 lectors in January, 1893. 



