I goo] Report of the Entomological Branch. 247 



by reason of the copious showers of honey-dew which were ejected. 

 Sidewalks and seats beneath such trees were made both unsightly 

 and disgusling-. Later, the trees themselves took on a dirty black 

 appearance from the copious growth of the fungus Fnmago 

 salicina, which always develops under similar conditions. 



Another attack which requires- mention was by a large and 

 previously undescribed Aphid, the Destructive Pea-louse, which not 

 only did considerable harm to Sweet Peas in Gardens at Ottawa, 

 but was a most serious pest to crops of Field Peas in many parts 

 of the Dominion as well as in the United States. This insect has 

 been named Nectarophora destructor hy Prof. Johnson of College 

 Park, Md. Several species of its enemies were collected in the field 

 or bred from Ottawa individuals. Among these the following 

 have been identified : Praon cerasaphis, Aphidins Fletcheri, Ash- 

 mead (N. sp.); Syrphus tibessii, Coccinella gnotata, and C. trans- 

 versoguttata. 



In conclusion, the Leaders again invite all interested in the 

 study of insects to make the fullest use of them during the season 

 1900, whether they should be re-appointed as Leaders or not. 



W. H. Harrington, 1 ^ 



^ \ Leaders. 



James Fletcher, ( 



REVIEWS. 



Report on the Geology and Natural Resources of the Area 

 Included by the Nipissing and Temiscaming Map Sheets, 

 Comprising Portions OF the District of Nipissing, Ontario, 

 AND OF THE CouNTY OF PoNTiAC, QuEBEC. By Alfred Ernest 

 Barlow, M.A. Geological Survey of Canada, Pt. I, .Annual 

 Report, Vol. X, 1899, p. 302. 



This report, accompanied by two well executed maps on a 

 scale of four miles to the inch and covering an area of 6912 square 

 miles of the northern protaxis of the Dominion of Canada, is a 

 valuable addition to the literature of the pre-Cambrian of North 

 America, and is a further instalment of the work which is being 

 systematically carried forwatd by the Dominion Geological Survey 



