PREFACE XI 



Mr. Hewlett for specimens of Ceratopogon and Simulium; to Major 

 W. Glen Listen, I. M.S., for specimens of Phthirus pubis ; to Mr. Guy 

 Marshall, Director of the Imperial Bureau of Entomology, for a large 

 collection of Diptera, including many specimens of Glossina ; to Professor 

 Neumann, to whom we are greatly indebted on several other accounts, 

 for a remarkably fine collection of ticks ; to Dr. Nicolle, for a collection 

 of Algerian flies; to Major Perry, I. M.S., for eggs of several species 

 of Anopheles, and for imagines ; to Miss Porter, for specimens of 

 Melophagus ovinus ; to Dr. Roubaud, for many Muscids, including 

 Glossina and Auchmeromyia; to Dr. Shenkling, for a large collection 

 of Muscidae; to Baron Surcouf, for many species of Musca, including 

 Musca corvina; to Dr. Stanton, for a collection of Stomoxys from the 

 Federated Malay States ; and to Dr. Stephens, for specimens of Glossina 

 with puparia. 



We are glad to have this opportunity to express our sincere 

 thanks to those who, with unfailing courtesy, have helped us for 

 several years in the identification of specimens. Our acknowledge- 

 ments in this direction are due particularly to Professor Bezzi, Dr. 

 Speiser, Professor Neumann, Professor Kieffer, Professor Nuttall, 

 Professor Newstead, Dr. Annandale, Mr. Austen, Mr. Brunetti and 

 to the Hon. N. C. Rothschild. We are well aware of the amount of time 

 and trouble which these gentlemen must have expended on our behalf. 

 Mr. Distant and Mr. Nathan Banks have also helped us with advice 

 in connection with the chapters on Rhynchota and Acari respectively. 

 Our thanks are due to Dr. Gibson for his kindness in taking the 

 photographs and for considerable help in translations from the German. 

 We are also greatly indebted to Mr. T. Bainbrigge Fletcher who has 

 kept us informed of all important papers dealing with Medical Entomo- 

 logy ; his extensive knowledge of the literature has been most valuable. 



The junior author wishes to acknowledge the facilities afforded 

 him while at home by Professor Cossar Ewart and the staff of the 

 Zoological Department of the University of Edinburgh, and in partic- 

 ular to acknowledge his indebtedness to Dr. Ashworth for a training 

 in technique which has proved of the utmost value. 



Lastly, our thanks are due to our publishers, who have borne with 

 exemplary patience our many shortcomings ; and to Messrs. Wiele 

 and Kleine of Madras for the admirable manner in which they have 

 reproduced the plates. 



MADRAS 1 W. S. P. 



December 7, 1913} F. W. C. 



