The Food Relations of the Carahid<e and Coccinellid(r . 
53 
fungus element. The other genera recognized were Septoria, 
Ustilago, Macrosporium, Coleosporium, Peronospora, Menispora, 
and some spores of Spine ronemei and Myxogastres. 
Five adults, taken at Jacksonville, were found to have 
made about one-third of their food of insects, equally 
divided between plant-lice and chinch-bugs, each eaten by one of 
the beetles. The vegetation consisted, as usual, of pollen of 
Composite (eleven per cent.), spores of lichens (two per cent.), 
and of fungi (seventy-one per cent.). The list of the last includes 
Septoria, Ustilago, Helminthosporium, Macrosporium, Cladospo- 
rium, and Peronospora. 
Two larva? of this species, taken at the same place and time, 
differed but little in food, to my surprise, from the adults just 
mentioned. Chinch-bugs, plant-lice, and caterpillars, in about 
equal ratios, with traces of unrecognizable insects, amount to 
twenty-three per cent. Pollen of Oomposita 1 stands at five 
per cent., lichen spores at seven, and spores of fungi at sixty-five, 
including the same genera as those just mentioned, except Peron- 
ospora. and Septoria. 
H. glacialis was represented by four specimens, taken in the 
corn-field. The differences between their food and that of H. 
convergent were purely trivial. Insects amount to thirty per 
cent., all chinch-bugs and plant- lice, twelve per cent, of the former 
and eighteen of the latter. The seventy per cent, of vegetable 
food is divided about as before, between pollen of Composite, 
seven per cent., and spores of fungi fifty-one per cent. Lichen 
spores were taken more freely, however, and were estimated at 
twelve per cent., eaten by all the beetles. The fungi were mostly 
Cladosporium (forty-three per cent.), but Septoria, Uredo, Hel- 
minthosporium and Peronospora likewise occur. 
Genus Coccinella. 
Six specimens of this genus were studied, three of C. 9-notata , 
and three of C. 5-notata. All were frc§n Central Illinois except one, 
which was from Jacksonville. Excluding the last, the ratio of 
animal food eaten by these specimens was not far from two-thirds 
of the total, all plant-lice. Only a trace of pollen of Composite 
was noticed in one of the insects. Fungus spores amounted to 
thirty-two per cent, (about half Helminthosporium and Ustilago), 
