579 



Dcndroctonus (with one exception) and Ips, are found solely on the 

 genus Finns, Pseudohylcsinus (with one exception) in the firs, and 

 Phloeosinns in cypress and redwood. Two species of the last 

 named genus are found in pine, one in Canada, the other in India. 

 The danger of quoting local popular names only for the food-plants 

 is pointed out. In the present paper 92 species of Scolytids are listed, 

 of which 35 are common to British Columbia and California and 

 probably to Oregon and Washington, 24 are found in California and 

 not in British Columbia, and 33 in British Columbia and not in California. 

 The distribution in these two regions depends largely on the distribution 

 of the food-plants. Some of the species, such as Dcndrodonus brevi- 

 comis {barberi) or D. monticolae [ponderosae), extend south through the 

 Rockies to Colorado, New Mexico and Arizona, which may also be 

 the case with several species of Ips and Pityophthorits. 



As regards deciduous trees, Xyleborus dispar, F. {Anisandriis pyri, 

 Peck.) has been found in apple at Vancouver, and Leperisimis cali- 

 fornicus, Sw., in olive in Cahfornia, the latter probably breeding in 

 numerous species of Ceanothiis. Alniphagus aspericoUis, Lee, breeds 

 in Abuts oregona, and Trypodendron retusns, Lee, in Popuhis trenutloides, 

 both in British Columbia and California, but they probably occur 

 wherever the western alders and poplars exist. Dryocoetes betidae, 

 Hopk., occurs in Betida occidentalis in British Columbia. 



Larrimer (W. H.) & Ford (A. L.). U.S. Bur. Ent. The Daily 

 Maximum Feeding Period of Melanoplus femur-rnbrwn. — Canad. 

 Ent., Orillia, liv, no. 6, June 1922, pp. 141-143, 2 figs. 



As a result of studies on the feeding habits of Melanoplus femur- 

 rubrum in Indiana, it is considered that in order to obtain the best 

 results from poison bran mash it should be apphed about 8.30 a.m., so 

 that it is in a moist condition during the maximum feeding period — from 

 10 a.m. onwards. 



Day (F. H.). Dermestes lardarius, L., feeding on Wood.— E//7. Mthly. 

 Mag., London, no. 700, September 1922. p. 209. 



Dermestes lardarius, L., is recorded as boring in the woodwork of a 

 large hide warehouse in Carlisle, The wood appears to be English 

 spruce but very old and dry. When skins are removed, many larvae 

 fall to the ground and seek shelter in any available cracks. When 

 the food in these cracks, consisting of fragments of skin and hair, 

 is exhausted, the larvae bore into the boards, from which they are 

 apparently able to extract sufficient nourishment to complete their 

 life-cycle. Some of the burrows were a foot or more long and 

 harboured mature beetles as well as larvae. 



ScHOEXE (W. J.). Thirteenth Report of the State Entomologist and 

 Plant Pathologist, 1920-21.— ()/r^'. Bull. Virginia State Crop 

 Pest Commis., Blacksburg, iii, no. 4, January 1922, 30 pp., 4 figs. 

 [Received 25th September 1922.] 



The work in connection with the control of Cydia {Laspeyresia) 

 pomonclla, L., shows that the importance of the feeding period in late 

 summer has been greatly underestimated in the preparation of spray 

 recommendations. Spray calendars based on observations for only one 

 or two seasons cannot always be depended upon owing to variable 

 weather conditions. 



