[BETHUNE] BIBLIOGRAPHY OF CANADIAN ENTOMOLOGY 173 
29. Chrystal, R. Neil. 
Notes on Lithocolletis gaultheriella, Wals.—Leaf-miner in Gaultheria shallon 
Proc. British Columbia Ent. Soc., No. 6, n.s., pp. 111-113, fig., June, 1915° 
30. Chrystal, R. N. 
Forest Insect conditions in Stanley Park, Vancouver, B.C. 7th Annual 
Report, Quebec Soc. Prot. Plants, etc., pp. 72-75, two figures, 1914-1915. 
31. Clemens, Wilbert A. 
Mayflies of the Siphlonurus group. Can. Ent., vol. 47, pp. 245-260 
three plates, August, 1915. (Keys to the genera in both imago and nymph 
stages are given, and also to both stages of the species of Siphlonurus 
Many details of life-histories are related. A new genus, Siphloplecton, 
founded on specimens from Georgian Bay, Ont., is described). 
32. Clemens, W. A. 
Rearing experiments and ecology of Georgian Bay Ephemeridae. Contri- 
butions to Canadian Biology, being studies from the Biological Station 
of Canada, 1911-1914, Fasciculus II. Fresh water Fish and Lake Biology 
pp. 113-128, two plates and one text figure, Ottawa, 1915. 
Life-histories of Georgian Bay Ephemeridae of the genus Heptagenia. 
Ibid, pp. 131-143, four plates and one text figure. (A key to the male 
imagos of the genus, with descriptions of all stages, also figures of nymphs 
and structural details). 
33. Cockerell, T. D. A. 
Sunflower Insects. Can. Ent., vol. 47, pp. 280-282, September, 1915. 
34. Cockerell, T. D. À. 
Monograph of the Bombycine Moths of North America, including their 
transformations and origin of the larval markings and armature. Part iii, 
Families Ceratocampidae, Saturniidae, Hemileucidae and Brahmaeidae: 
by Alpheus Spring Packard. Vol. xii, First Memoir, National Academy 
of Sciences, Washington, D.C. 516 pages, 4 to., 113 plates, 34 of which, 
depicting larvae, are coloured). (This posthumous work of Dr. Packard, 
edited by Prof. Cockerell, includes the species of Saturniidae that are found 
in Canada.) 
35. Cosens, A. 
Notes on the Strawberry leaf petiole Gall, Diastrophus fragariae, Beutm. 
Can. Ent., vol. 47, pp. 354-355, figure, November, 1915. 
36. Cosens, À. 
Insects of the year in the Toronto District. 45th Ann. Report, Ent. Soc. 
Ont., pp. 16-19, 1914, two figures. (Contains observations on the habits 
of Metzneria lapella, whose larvae feed on the heads of the Small Burdock; 
a list of the Sawfly gall producers found in the district, and other observa- 
tions). 
37. Craighead, F. C. 
Contributions toward a classification and biology of the North American 
Cerambycidae: Larvae of the Prioninae. Report No. 107, Bureau of 
Entomology, U.S. Dept. of Agriculture, Washington, pp. 24, eight plates, 
June, 1915. (Several Canadian species are described). 
