THE DRAGONFLIES (ODONATA) OF BURMA AND LOWER 
SIAM—III.1. SUBFAMILY AESCHNINAE. 
By Frank Fortescue Laipiaw, 
Of Uffeulme, England. 
INTRODUCTION. 
The preceding paper of this series was published so long ago as 
1907. Following Mr. EK. B. Williamson’s kind suggestion, I propose 
to attempt to carry on in this and in subsequent parts the faunistic 
survey commenced by himself. In the first place I must express my 
regret that he should be unable to complete the work so admirably 
begun, and my appreciation of my own inadequacy to continue the 
series at the high level at which it started. I shall endeavor to 
follow the general plan of his two papers, and I have to thank him and 
likewise the authorities of the United States National Museum for 
the opportunity of dealing with the large and important collections 
on which this account is based. 
The material available consists of: 1, Several thousands of speci- 
. mens collected by Mr. R. A. Earnshaw in the Karenni and Toungu 
districts of Burma, the property of Mr. Williamson; 2, the collection 
made by Dr. W. L. Abbott in lower Siam, presented by him to the 
United States National Museum. 
These rich stores have been supplemented by other smaller collec- 
tions, the property of Mr. Williamson. ‘These are, 1, a small collec- 
tion from Candelay, Ceylon; 2, material from central India (Mhow), 
the northwest Provinces (Lucknow and Meerut), Burma (Rangoon), 
collected by Brunetti; 3, a few specimens from Penang; 4, a small 
collection from various localities in Annam and Tonkin; and lastly 
5, three specimens from the southern part of the Celebes. 
I am able to supplement the information obtainable from these 
sources by the fact that I have had access to the collections of the 
Calcutta Museum, to those of the Sarawak Museum, and to collections 
i The first and second parts of the series, both by Mr. E. B. Williamson, are as follows: 
The Dragonflies (Odonata) of Burma and Lower Siam. 
I. Subfamily Calopteryginae, Proc. U.S. Nat. Mus., vol.28, pp. 165-187, published Apr. 22. 1905. 
II. Subfamilies Cordulegasterinae, Chlorogomphinae, and Gomphinae, Proc. U. S. Nat. Mus., 
vol. 33, pp. 267-317, published Dec. 13, 1907. 
No. 2467.—PROCEEDINGS U. S, NATIONAL MUSEUM, VOL. 62, ART. 21. 
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