ON BORIS^EAN bUAGONFLIES. 3ll 



17. Contributions to a Study o£ the Dragonfly Fauna of 

 Borneo. — Part IV. A List of Species known to occur 

 in the Iskud. By F. F. Laidlaw, M.A.((Jantab.), 

 F.Z.S. 



[Received April 9, 1920 : Head April 21, 1920. j 



(Text-figures 1-4.) 



Index. Page 



I. Introduction 311 



II. List of Species 312 



III. Some Remarks on Geographical Distribution 341 



I. Introduction. 



I have attempted in the following list to catalogue all species 

 of Dragonflies which have been recorded from Borneo, or which 

 are otherwise known to me to occur in the island. 



In the case of some species I have added notes that may, I 

 hope, be of service to others who may deal with this fauna. 



In addition to records already available in the literature of the 

 order O.lonata, I have been able to compile my list from the 

 examination of the large amount of material sent me by Major 

 J. C Moulton whilst Curator of the Sarawak Museum. Some of 

 this material has already been dealt with, as noted in the 

 refei'ences to literature; and Major Moultou's type specimens 

 are, unless otherwise noted, deposited in the British Museum. 

 Where possible, paratypes have been sent to the Sarawak 

 Museum, 



I have also been able to examine a collection sent to me nearl}'' 

 twenty years ago by Dr. 0. Hose from the Baram district. 



References to specimens examined deal in every case with 

 Major Moultou's mateiial imles^, otherwise stated. 



His localities are in the territory of Sarawak, with the following- 

 exceptions, which are in British North Borneo : — Mt. Kinabalu, 

 Tampassuk (River), and Khotabelud. 



In order to avoid undue prolixity in the list, I have given 

 references chiefly, if not entirely, to faunistic and systematic 

 papers. For the Lihellulince I have thouglit it necessaiy to quote 

 only Dr. Riss Monogi'aph of the subfamily, refeired to in the 

 sequel as " Ris, Oat. Coll. Selys, Libell." ('Catalogue Systematique 

 et Descript. Collections Zoologiques du Baron Edm. de Selys- 

 Longchamps,' Fasc. ix.-xvi., Libellulinje). The publication of the 

 Moxiograph was completed in 1919, and it contains a very full 

 synonymy of all the Bornean species. 



For the GomjjMnce a,nd Chlorogomphince I give reference only 

 to my previous paper on the group (these Proceedings, 1914, 

 pp. 51-63, pi. i.), where citations of recent papers are to be found. 



