520 L. de Niceville & Dr. L. Martin — Butterflies of Sumatra. [No. 3, 



Wellesley and Kwala Lumpor in Selangor also in the Malay Peninsula. 

 I possess two specimens from Quang and Kwala Lumpor. Sumatran 

 specimens agree fairly well with Malay Peninsula ones, and with 

 Distant's figure of the species, pi. xxviia, fig. 6, male. Both sexes 

 mimic the corresponding sexes of Euploea linnsei, Moore. Dr. Martin 

 has obtained two females only of P. butleri, which mimic the female 

 of E. linnsei. It is rare in the plains and outer hills, near Selesseh, in 

 Padang Bedagei and Asahan, also in the Gayoe territory, but certainly 

 not much higher than Bekantschan, and flies from January to June and 

 again in September, but in no other months. The males if undisturhed 

 are on the wing exactly like E. linnsei, but as soon as they scent danger 

 they assume the typical rapid flight of a Papilio. They are very fond 

 of wet swampy spots on roads in the forest. The females are very 

 scarce. Dr. Martin's brother bred it in Asahan in 1891 from larvae found 

 on a low shrub (not a creeper) in the forest ; they were velvety black 

 with fleshy red tubercles. The pupa, suspended by a black median 

 girth, adheres by the three posterior abdominal segments to a branch 

 of the food-plant, and looks like an obliquely cut off bit of stick as 

 do the pupae of all this group. The pupa is quite rigid, and has no 

 motion in the abdominal segments whatever. 



591. Papilio (Etiplceopsis) .enigma, Wallace. 



P. tsnigma, Wallace, Trans. Linn. Soc. Lond., Zoology, first series, vol. xxv, 

 p. GO, n. 83, pi. vii. fig. 3, male (1865). 



Described by Wallace from Malacca, Sumatra, and Borneo. The 

 specimen figured is from Sumatra. It is possible that the butterfly 

 figured by Distant in Rhop. Malay., pi. xxvii, fig. 6, as the female of 

 P. butleri, Janson, is the true female of P. senigma. (Wallace records 

 that species from Malacca as noted above, but Distant concludes that 

 the Malaecun specimen so identified is the P. butleri described subse- 

 quently as a distinct species.) It is extremely difficult to say who 

 is right, Wallace or Distant ; the butterflies of this group are excessively 

 rare, so that it is almost impossible to get together sufficient material to 

 decide the point. Dr. Martin has two females only, one taken on the 

 outer hills south of Namoe Ockor, in December, the other in Indragiri 

 in the middle of Sumatra, in February. These specimens agree with 

 Distant's figure above quoted, and I prefer to consider them to represent 

 P. senigma rather than to be a dimorphic form in the female of P. but- 

 leri. Dr. Martin, as noted above, possesses the ordinary form of the 

 female of P. butleri which mimics the female of Euploea linnsei, Moore, 

 and was unknown to Distaut. 



