-156- 



This table presents a very different appearance. While the observa- 

 tions of 1887 indicate the greater abundance oi/usca, those of 1888 in- 

 dicate the far greater abundance of gibbosa. It is not unnoticed that 

 these observations began later in the seaison. Constant cold and storm}' 

 weather in the month of May prevented the use of the trap, but the con- 

 tinuity of the dates in June 1888 is more satisfacttiry than the somewhat 

 broken series of 1887, ant! a comparison of the two \ears may be very 

 satisfactorilv instituted to about tlie middle of June. If the excess of 

 gibbosa as compared with fusca in the present season is exceptional, 

 there must have been some strong influences at work, meteorological or 

 other, to have occasioned this surprising disparity in numbers. Many 

 speculations might be indulged in but none tlint occur to me seem to 

 suflficientlv satisfactory to warrant their presentation as explaining what 

 may be abnormal in the comparative abundance of these two species in 

 my locality the present year. 



V. 



With the 1^2 gibbosa taken on July ist, 1888, among other insects 

 I took great numbers of CrambiiLe. They were too numerous to be 

 counted with any reasonable expenditure of time, but I counted the con- 

 tents of a small box closelv packed with them, and using this box as a 

 measure, estimated their number in excess of eight thousand. 



VI. 



As indicative of the omnivorous capacity of m)' trap I append a list 

 of its contents on the night of June 13th, 1888. 



1. Clivina impressit'rons, Lee... 3 



2. " aniericana. Dej 2 



3. Loxopeza grandis, Hentz .... i 

 Lebia viridis, Say 2 



" iileuritica, Lee 2 



" fu>cata, Dej i 



riatynii-; obsoletus. Say 18 



Pterosticlms sp. ? 40 



9. Badister pulchellu';, Lee 3 



10. Agonoderus comma, Fab 730 



11. '• partiarius. Say .. 4 



12. Anisodactyhis diseoideus, Dej. 11 



13. " sericeus, ILarr.. 23 



14. Beinbidium eordatum, Lee.. . . i 



15. Cnemidotns edentukis, Lee... i 



16. Colymbetes seulptiiis, Harr. . . i 



17. Gaurodytes obtiLsatus, Say... 4 



847 



For'd 847 



18. Cryptobium pallipes, Grav. . . . 2 



19. Heterocerus substriatus, Ries i 



20. Copris anaglypticus, Say ..... 2 



21. Apliodius j^ranarius, Linn ... 19 



22. Tro.v unis.triatus, lieauv 2 



23. " capillaris. Say I 



Laehnosterna gibbosa. Burm. .204 



" fusca, Fiol. ... 9 



" ilicis, Burm. ... i 



Ligyrus relictus, Say i 



Melanotus communis, GylL ... i 



Diabrotica vittata, Fabr 2 



Notoxus anchora, Ilenlz. ... i 



Pyrrarctia isabelia. Abb.&Sm. I 



Telea polypliemus. Cram i 



Opliion bilineatum, Say 5 



24. 



25- 



26. 

 27. 

 28. 

 29. 



and 92 as yet undetermined examples, representing not less than 32 dif- 

 ferent species. This list of 65 species and 11 92 specimens enumerates 



