134 THE CANADIAN ENTOMOLOGIST 



GYRINID/E: 



Gyrinus analis Say. VI, 19:153-153. 

 COCCINELLID/E: 



Megilla maculata DeG. Date? 27-57. 



Hippodamia 13-punctala Linn. Date? 14-27. 



Hippodamia parenthesis Say. VI, 18:35-39. 



Coccinclla sanguinea Linn. Date? 5-10. 



Analis 16-punctata Oliv. Date? 44-67. 



Chilocorus bivulnerus Muls. Date? 59-66. 

 LUCANID/H: 



Lucanus placidus Say. VI, 12:16-23. 

 SCARAB^IDy^: 



Aphodius fimentarius Linn. VII, 22:88-89. 

 CHRYSOMELID^: 



Leplinolarsa decemlineata Say. Date?:45-75. 



Lina scripta Fabr. Date?: 17-26. 



Diabrolica 12-punctala Fabr. Date?:15-30. 



Disonycha pennsylvanica 111. Date?: 101-169. 



It may be that owing to my special interest in aquatic beetles, 

 I picked up a larger proportion of such genera as Agabus, Ilybius, 

 and Gyrinus than of the others. I missed the annual swarming of 

 the Lachnosternas. 



Of Hemiptera, doubtless the most abundant were the aphids, 

 which I did not collect at all, owing to their minuteness and bad 

 state of preservation. Only the larger forms were taken. More 

 than half of these were Pentatomidae. The grotesque Membracids 

 were represented by three species, Smilia cameliis Fabr., Xantlio- 

 lobus trilineatiis Say, and Cyrtolohis vau. The aquatic Nepa and 

 Ranatra were represented by single specimens. My list, de- 

 termined also by Mr. Morrison, shows nine families represented 

 by 20 species and 53 specimens. Those represented by more than 

 four specimens are: 



SALDID/E: 



SaldapallipesFa.hr. VII, 21:4-5. 

 GERRIDy€: 



Gerris marginatus Say. VII, 13:9-9. ~ 



Limnoporus rufoscutellatus Latr. VI, 13:5-6. 

 PENTAT0M1D.€: 



Ccenus delius Say. VIII, 6:3-5. 



Euschistus variolarius P. B. VI, 13:4-7. 



Apatelicus cynicus Ssly. VIII, 1:3-6. 



Apaleticus maculiventris Say. VI, 13:10-11. 



The Diptera of the drift, are represented mainly by innumer- 

 able cast skins of Chironomidae from the lake bottom, and the many 

 adult midges mixed with them are always in bad condition. Scat- 

 tering cranefiies are always present — species of Tipula, Pachyrina 

 and Dicranomyia. Besides the flesh-fiies of the drift that have 

 been so well treated by Herms ('06) there are often numbers of 

 Anthomyiidae (Chortophila, Coenosia, etc.), Borboridae (Limosina), 

 etc., rarely in fit condition for specific determination. 



Lepidoptera are represented during the course of the season 



