2s 
THE CraNnE-Fiuirs or New York — Parr II 817 
from tubular flowers. The various species of the genus have been recorded 
as feeding on a wide range of plant species, which have been indicated by 
Knab (1910) and by Alexander (1916 b:486-493) and may be summarized 
as follows: 
Species Plants frequented 
Geranomyia canadensis _ Compositae — Eupatorium, Solidago, Aster, 
Silphium, Rudbeckia, Verbesina, Cacalia, 
and similar species 
Geranomyia diversa Compositae — Solidago, Beer 
Umbelliferae — Daucus 
Geranomyia virescens Lauraceae — Persea 
Geranomyia rostrata Compositae — Eupatorium, Solidago, Heke 
anthus 
For many years nothing was known concerning the immature stages 
of any species of Geranomyia. In 1917, J. R. Malloch found larvae and 
pupae of G. canadensis at Urbana, Illinois. Mr. Malloch and the writer 
have in-press a detailed paper on the immature stages of this species, and 
the following brief account is abstracted from this paper and included 
herewith in order to complete the data. 
Mr. Malloch found the larvae on the grounds of the Floriculture Depart- 
ment of the University of Illinois. There is a small bubbling fountain 
here, the waste water from which flows along an open gutter. In this 
gutter the immature stages of G. canadensis lived among the vegetable 
growth and diatomaceous ooze in the bottom of the trough. Mr. Malloch 
and the writer found this same species in Union County, southern 
Illinois, in 1919. Here larvae and pupae occurred on the face of rocks 
where the surface was continually damp with percolating water. A 
railroad bank had been formed by piling up slabs of limestone to a height 
of about four feet. In the irregularities and crevices of these pieces 
of limestone, the larvae of Geranomyia were living in delicate silken 
tubes covered with a deposit of silt and diatoms. They emerged from 
their cases to feed on the exposed surface of the wet rocks during twilight, 
and even during the hours of sunlight, but upon being disturbed or alarmed 
they retreated with great agility into their tubes. The pupae are found 
in short, nearly vertical burrows in the same situations as the larvae; 
here they rest with only the long, conspicuous breathing horns projecting 
from the entrance to the burrow. When transformation takes place, 
the pupal skin projects from the mouth of the burrow nearly to the ends 
5 
