OF WASHINGTON, VOLUMP^ XIII, 1911. 199 



presenting many papers for publication. He traveled very 

 little, and never visited other museums for study. 



Personally Mr. Coquillett was an ascetic. Rarely did he speak 

 of his past, or home life, and only occasionally would he dis- 

 cuss with his associates matters of scientific interest. He was 

 always on time at the office in the morning, worked steadily 

 till the closing hour, and then was lost to his associates. It 

 is now known that he did much in helping the poor and un- 

 fortunate, and in aiding charitable work. 



Quiet and unassuming, he sought no help from others, but 

 always worked out everything for himself, and abided by that 

 result. Among the younger entomologists and collectors he 

 was popular from the fact that he was prompt in describing 

 new species in the collections made by them and referred to 

 him for determination, thus encouraging them in making fur- 

 ther collections of the groups in which he was working. Ever 

 courteous and kind to others, he willingly neglected his own 

 work to help them in the identification of Diptera, and his loss 

 in this respect leaves a serious gap in American Entomology. 



A BIBLIOGRAPHY OF THE PRINCIPAL WRITINGS OF 

 DANIEL WILLIAM COQUILLETT. 



The oology of Illinois. Woodstock, 111., 1876. 



The American lackey-moth, Clisiocampa americana. Germantown, 



111., Telegraph, vol. 50, no. 9. 

 The locust-tree borer, Xyleutes robiniae: Its natural history and means 



for its destruction. Germantown Telegraph, vol. 50, no. 12, 

 The clear-winged Sesia, Sesia diffinis: Its natural history. Germantown 



Telegraph, vol. 50, no. 30. 

 Plant lice. Germantown Telegraph, vol. 50, no. 30. 

 The lime-tree geometer, Hibernia tiliaria: Its natural history and 



means for its destruction. Germantown Telegraph, vol. 50, no. 32. 

 The imported cabbage-butterfly, Pieris rapae: Its natural history and 



means for its destruction. Germantown Telegraph, vol. 50, no. 



46; Iowa Farmer, vol. 4, no. 8. 

 The cabbage-butterfly. Germantown Telegraph, vol 51, no. 3. 

 The imported carpet beetle, Anthrenus scrophulariae: Its natural 



history and means for destroying it. Germantown Telegraph, 



vol. 51, no. 6. 

 Wood-eating beetles. Germantown Telegraph, vol. 51, no. 8. 

 Bark lice. Germantown Telegraph, vol. 51, no. 10. 

 Hot water as an insecticide. Germantown Telegraph, vol. 51, no. 21. 



