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Lepidopfera collected by the British Ornithologists' Uninn avd Wollasfon Expeditions in the 

 Snow Mountains, Southern Dutch New Guinea. By the Hon. Walter Rothschild, 

 Ph.D., F.R.S. 



The whole of the Lepidoptera on both expeditions were collected by, or under the 

 immediate supervision of Dr. Wollaston, but unfortunately all the Rhopalocem of 

 the expedition led by Mr. Goodfellow were destroyed, and only 614 specimens of 

 Heterocera were saved; of these I have _ described in the Appendix some new 

 species ; the remainder I was unable to enumerate, as they had been put away in the 

 study collection of the British Museum and the descriptions not yet published. 



The Lepidoptera of the Wollaston Expedition consist of 811 species, 210 

 Rhopalocera and Grypocera and 601 Heterocera ; of which 40 species and 16 sub- 

 species of Rhopalocera and Grypocera, and 212 species and 20 subspecies of Heterocera 

 are new to science. The collection brought together by the Wollaston Exjjedition 

 was made on the Utakwa or Oetakwa River, which rises in the Snow Mountains, and 

 on Carstensz Peak, to within 500 feet of the summit of which, the party reached. 



The following is a list of the stations, with necessary details : 



(1) Base Camp. — Sea level, reached September 18th, 1912, was situated 20 miles 

 from mouth of river. 



(2) Canoe Camp. — Reached October 12th ; this was the farthest place possible to 

 reach by water. 



(3) Observation Camp. — 2500 feet in foot-hills, 3 days' march from Canoe Camp. 

 The localities from here up to Camp 9, 6000 feet, are included in those given 

 under each species either under Utakwa River or Snow Mountains, these being 

 quoted from Mr. Wollaston's labels. 



(4) Carstensz Peak. — Under this heading is included the portion of the collection 

 made above 5000 feet. 



The various localities quoted for the specimens got on the Goodfellow Expedition 

 are mostly small and large rivers flowing from the Snow Mountains. 



In the body of the article I have only mentioned the names of the stations, altitudes 

 and dates. 



I have to express my great thanks to Mr. Richard South for identifying the Lycaenidae 

 and Hesperiidae for me ; to Mr. Louis B. Prout for identifying the Geometridae other 

 than certain Oenochrominae, the genus Dysphania, and the Milionia section of the 

 Boarmianae ; and to Mr. J. H. Durrant for writing the section on the Microlepidoptera . 

 I also have to thank Sir George Hampson for much and valuable general assistance. 

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