vi AUTHOR'S PREFACE. 



Many new species in the families at present treated of 

 will with certainty be discovered, but it seems reasonable to 

 assume that for some little time to come the wants of the 

 Indian student in the groups monographed herein will be 

 tolerably well met in these pages. 



The bulk of the present material forms an integral part of 

 the Indian Museum collection, and it is directiv due to mv 

 familiarity with that collection that this volume has been 

 rendered possible. My thanks are therefore freely tendered 

 to Dr. Annandale. the indefatigable Superintendent of that 

 Institution, and to his co-directors, since it has been at his 

 instigation that I have obtained the necessary knowledge. 

 My heartfelt thanks are also due to the following gentlemen 

 who have most kindly supplied me with much valuable 

 information respecting the types of TIPULID^; that are con- 

 tained in European Museums*: Dr. A. Handlirsch (Vienna 

 Museum); Prof. R. Gestro (Genoa Museum); Dr. J. C. de 

 Meijere (Amsterdam Museum) ; Mr. Ritsema (Leyden 

 Museum); Mr. C. Hill (British Museum); Dr. A. Brauer 

 (Berlin Museum); Mr. Lundbeck (Copenhagen Museum); 

 and Mr. Bedot (Geneva Museum). 



To the Directors of the Pusa Agricultural Research 

 Institute thanks are also due for the loan of specimens for 

 examination, through the kindness of Mr. F. M. Hewlett, 

 and the gift of a certain number of cotypes for my own 

 collection; also to Mr. A. D. Imms, of the Muir Central 

 College, Allahabad, for the loan of specimens which, although 

 not numerous, comprised a number of new species. Special 

 thanks are due to Mr. E. E. Green for his untiring energy 

 in collecting the Diptera of Ceylon and presenting a number 

 of types of new species to the Indian Museum (as Mr. Hewlett 



* This information has already been included in a previous paper of 

 mine (" Revision of the Oriental Tipulidae," Records of the Indian 

 Museum, vi, pp. 231-314, 1911), but that paper was practically a basis 

 for the present more exhaustive work. 



