7 6 • PSYCHE [August 



A REVISED LIST OF THE DIPTERA OF BERMUDA. 



BY CHARLES W. JOHNSON, BOSTON, MASS. 



The following list which comprises all previous records, together with several 

 additional species collected by Mr. C. Abbott Davis is brought together to show 

 concisely our present knowledge of the Diptera of the Bermudas, and the work 

 necessary to a more satisfactory condition. 



The first recorded Diptera were a few without positive determination in ''The 

 Naturalist in Bermuda" by J. Matthew Jones, page 123. 1859. In the "Visitor's 

 Guide to Bermuda" by the same author, 1876, page 143, is a hst of seven species 

 determined by Baron Osten Sacken, and two by Walker. Dr. P. R. Uhler ("Obser- 

 vations on the insects of the Bermudas,") in " The Bermuda Islands " by Angelo 

 Heilprin pages 152-158, 1889, records three species. Dr. Fred. Dahl, "Land- 

 fauna of the Bermudas," Plankton Expedition, Vol. I, A, 1892, page 109, records 

 about eight species. The most complete account bearing on the Diptera is that 

 given by Prof. A. E. Verrill in his work " The Bermuda Islands," published in the 

 Transaction of the Connecticut Academy of Arts and Sciences, Vol. XI, pages 

 740-749, 1901-02. In this work about thirty-three are recorded. 



The present list contains about fifty species; of this number, fifteen have been 

 added by the collections made by Mr. Davis during a part of July and August, 1903, 

 and one by Mr. T. L. Montgomery in March, 1897. The fauna seems for the most 

 part to have been derived from the United States and West Indies, and is probably 

 being gradually augmented from these sources. The richness of the flora would 

 indicate a greater number of species and careful collecting at all seasons of the 

 year will undoubtedly add many species to the fauna. 



TiPULIDAE. 



Dicrano77iyia distans O. S. This seems to be the only species recorded. Prof. 

 Verrill refers to several undetermined species, and Mr. Davis captured J'achyrrhina 

 ferruginea Fabr. on the vessel e7i route. 



CULICIDAE. 



Culex soUicitans Walk. Several specimens of this and the following species 

 were taken by Mr. Davis, July 24 and 25. 

 Culex taeniorhynchus Wied., July 25. 

 Culex fatigatis Wied. This species is recorded by Theobald in his Monograph 



