406 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 6 



Hippodamia spuria Leconte April 21. 



Cocdnella novemnotata Hbst April 21. 



Coccinella transversoguttata Fald April 21. 



By the time that most of these coccinellids reach the valleys, i. e., 

 by the middle of April, an abundance of aphid food is present. Our 

 most common aphids hatch in early March, and by the middle of April 

 most of these individuals are mature. 



However, this supply of food is cut short by about the middle of 

 May, due not only to the voracious appetites of the lately emerged 

 coccinellids, but to other enemies also, the most important of which 

 are syrphis fly larvae and a lampyrid beetle, Podabrus prinosus Leconte. 



Again the coccinellids must rely upon plants for most of their food. 

 By the first of June, thousands of individuals will be found in vetch 

 fields and among wild flowers along the road sides or in turning rows. 

 Around Corvallis, nearly all of the common species go to the vetch 

 fields. Here they feed upon a cell sap or nectar secreted by special 

 glands, one of which is located on each stipule situated at the base of a 

 compound leaf. 



Miscellaneous Notes and Observations 



There is a distinct preference shown by our most common coccinel- 

 lids for certain species of Aphididce. Among those most sought are: 

 The Black Cherry Aphis {Myzus cerasi Fab.), Snow-ball Aphis {Aphis 

 vihurni Scopoli), Rosy Apple Aphis {Aphis sorhi Kalt.), and European 

 Grain Aphis {Aphis avence Fab.). 



On the other hand, such aphids as the Green Apple Aphis {Aphis 

 pomi DeGeer) and the Woolly Apple Aphis {Eriosoma lanigera Haus.) 

 are not relished with nearly as much zest as the former mentioned 

 plant lice. In fact some of our common coccinellids will not live alone 

 upon a diet of Aphis pomi DeGeer. This I have demonstrated in 

 the laboratory. 



Among the records of some of the rarer species of coccinellids, I have 

 to report a single observation of Anisocalvia duodecimmaculata Gebl., 

 a female, and of Anisocalvia quatuordecimguttata Linn., a male. These 

 two were found in copulation, on leaves of vine maple, at Corvallis, 

 May 2, 1913, by G. Moznette. 



Before closing I will add a single synonymical note. I am of the 

 opinion that the typically marked form of Hippodamia convergens 

 Guerin and the spotless form should be regarded as distinct species, 

 as they were once, for the following reasons : 



1. I find the spotless form breeds true to t3rpe. 



2. The two forms have a tendency to segregate themselves in their 



