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On the west coast of Borneo are two groups of small islands, the north Natuna group, about 3 50' N. lat. and 

 107 20' E. long. ; and the South Natuna group about 2 50' N. lat., and about 109 o' E. long. The largest 

 of the North Natunas are Pulo Laut and Bunguran, and of the South Natunas Subi, Panjung and Sirhassen. 

 In Balabac, one of the islets, Brookeana occurs, which perhaps is not surprising, considering that the South group is not 

 more than 64 miles north-west of the coast of Sarawak. The other species found in the northern group are Cerberus and 

 A ndromache. 



P. Darsius is confined entirely to the island of Ceylon ; being found in the western-central provinces, all the 

 year round : emerging from the pupa in March and April. It is not uncommon in the open woods, and may be often 

 seen flying in pairs. The 2 rises slowly and vertically into the air, the $ soon follows her in the same direction and in 

 in the same style of flight, the two remaining about two or three feet apart, where they keep on rising and falling in per- 

 fect unison, as if they were under a magnetic spell. Occasionally a second or a third $ is drawn under the same influence, 

 and compelled to follow the same mysterious leading under a similar excitement or exaltation. The species is found 

 on the plains and hills, whether in forest or open ground. Its flight is very high. At Kandy the species 

 is very common, also at Galle : abundant in the low country, but in the hills is to be met with as high as 

 4,000 feet. This is the only species of Troides inhabiting Ceylon, though about 29 other species of Papilioniina; belong 

 to the island, and a large insect fauna in addition — estimated by Tennant at 10,000 species. The Birds of Ceylon 

 would probably number quite 350 ; the reptiles over 120 ; the mammals 70 species. Of the physical character of the 

 island there is no need to speak ; it is so well known. 



We now come to the great Indian region, exceedingly rich and abundant in species of insects, of birds, and 

 indeed of all orders of animal life. But as any even brief description of its various provinces would require more 

 space than this volume could afford, and so much information at any rate, of a geographical description, is possessed by 

 everyone, I will only say that in this region we will suppose to be included the Andaman Islands, Cochin China, Siam, 

 Cambodia, the Tenasserim provinces, Burma, Arakan, Chittagong, Assam and Khasiah hills, Sylhet, Sikkim, Nepaul, 

 Bhotan, South India and the Western Himalayas ; an extent of land maintaining an enormous fauna and flora of the 

 most varied, wonderful and splendid character in every order — probably not yet much more than half known — a region 

 extending, say, from 70 to no of E. long., and from 49 to io° of N. lat., or about 5,529,600 square miles; and if we 

 add to this the Chinese region in which Troides may be found — (at least as regards Pompeoptera Cerberus) this 

 immense area would be greatly enlarged, still more so by the addition of the Malay Peninsula. Over all these 

 regions only the Pompeoptera are to be found, though a few more forms of that genus may yet be met with. 



It therefore remains to give a summary of the foregoing, as I have done in Vol. I. of this work. 



SUMMARY OF THE FOREGOING. 



Trogonoptera Brookeana .... Borneo ; Sarawak, Sandakan, 

 Benjermasin, Perak, Labuan 

 Bedager, Marabuk River 

 (N.B.), Ipo (Perak), Kina 

 Balu, Lawas, Mount Muru 

 (N.B.), E. Sumatra, Johore 

 (S.), Deli (S.E.S.), Kopras 

 (N.E.S.), Quala Lemceruk 

 (N.E.S.), Malay Peninsula, 

 Balabac (Natuna Isles). 

 „ v. Eleanor Sumatra. 



v. Albescens Malacca. 



Trojan a 



Palawan 



Pompeoptera Hippolytus, 



The typeAmboina, Ceram,Gilolo, 

 Morty Island, Sula Island, 

 Celebes, Bara Bura, Ilu (Ce- 

 ram), Mira (Morty Island), 

 Tawaya N. of Palos Bay, 

 Lompa Battav (S. Celebes), 

 Sorontalo (S. of Palos Bay), 

 Sula Besi, Sula Mangola. 

 ,, v.Celebensis Celebes. 



P. Hippolytus v. Sulaensis 

 „ ,, v. Cellularis 

 Pompeoptera Minos 



Mangola Island. 

 Toli Toli (N. Celebes). 

 Darjiling Shivaroy Hills, 

 Buxa, Malabar, Trevandrum, 

 Bombay, Nilghiri Hills, Tra- 

 vancore, Tenasserim, S. India, 

 Cannanore, Assam, Karwar, 

 China, Sumatra, Rangoon, 

 Bankok. 



Pompeoptera Darsius .... Ceylon,Western Central Pro- 

 vinces, Kandy, Peradeniya, 

 Havagama, Belitualoya, Vel- 

 verry, Trincomali. [March, 



April] 

 W. Java. 



Mount Battak (Sumatra). 

 S. Celebes, Samanger (S. 

 Flores), Lombren, Pantar, 

 Adonara, Alors, Wetter, 

 Salayar, Celebes, Macassar, 

 Djampea Isle. 

 ,, v. Bauermanni Laroae, Patuna (S. Celebes) 



[August to Jan.] 

 ,, v. Pistor .... Djampea Isle, Kalao Isle 

 ,, v. Pallens 



„ Vandepolli .... 

 P. Vandepolli, v. Honrathiana 

 P. Haliphron 



