191'Jl ECONOMIC ZOOLOGY ENTOMOLOGY. 547 



Description of a new seaside sparrow from Florida, A. H. Howei.i. (Auk, 

 36 (1919), No. 1, pp. 86, 87). 



[Contributions on economic insects] (Ztsclir. Angew. Ent., 4 (1917), Xo. 1, 

 pp. 188, fii/s. 17).- The papers here presented include the following: The Fight 

 against the May Beetle and White Grub, with Particular Consideration of Their 

 Bird Enemies, by K. Loos (pp. 1-15) ; The Wheat Bulb Fly (Hylcmyia coarc- 

 tata), Present Year Observations in Pommern, by It. Klelne (pp. 1G-24) ; The 

 Temperature of the Bee Hive during Winter, by E. Zander (pp. 25-30) ; Effect 

 of Heat upon the Body Louse, by E. Martini (pp. 34-70) ; The Relation of 

 Ants to Man and Their Agricultural Importance, by H. Stitz (pp. 71-128), 

 which includes a bibliography of eight pages; The Use of Hydrocyanic Acid 

 Gas against the Mediterranean Flour Moth, by H. W. Frickhinger (pp. 129- 

 140); The Winter Moth Problem (Chei)tiatobia brumata), by K. Escherich 

 (pp. 141-145) ; The Woolly Apple Aphis Problem (pp. 145, 146) ; Combating 

 Bark Beetles (Anisandrus dispar) in Fruit Orchards with Carbon Bisulphid 

 pp. 147, 14S) ; etc. 



On the insect visitors to the blossoms of wild blackberry and wild spirea. — 

 A study in seasonal distribution, M. W. Blackman (Syracuse Univ. [Pub-?.], 

 18 (1918), Xo. 4, PP- 119-144* fi9- !)■ — This report is based upon collections 

 made in large part during July and August in 1913, 1914, 1915, and 1917, in 

 the Cat skills and the western Adirondacks. 



A revised check list of the British terrestrial Isopoda (wood lice), with 

 notes, W. 1). Collinge (Jour. Zool. Research, 8 (1918), Xo.. 1, pp. 81-43). — In 

 this revision of an earlier check list 1 the author recognizes 35 species and 59 

 varieties. 



The pear thrips (Taeniothrips inconsequens) and its control in British 

 Columbia, A. E. Cameron and R. C. Tkeherne (Canada Dept. Agr., Ent. 

 Branch Bui. 15 (1918), pp. 51, figs. 22). — This is a report of extended studies 

 of this pest, formerly known as Euthrips pyri, in British Columbia, a brief 

 account of which by the authors has been previously noted (E. S. R., 38. p. 

 259). Studies of this species in California by Moulton (E. S. R., 21, p. 755) 

 and by Foster and Jones (E. S. R., 24, p. 455) have also been previously noted. 



" The emergence from the soil continues up to the middle of April, the maxi- 

 mum number appearing from April 1 to 14. This practically coincides with the 

 time of the bursting of the buds of the various fruit trees on Vancouver Island. 

 The buds have barely opened when the adults enter and feed on the young, 

 delicate tissue of the developing parts within. Almost as soon as the leaves 

 and blossom pedicels appear the adults begin to lay their eggs. The first eggs 

 are generally laid about the middle of April and the last about the middle of 

 May. The period of maximum oviposition usually extends from April 24 to 

 May 7. Eggs are laid in largest numbers on the petioles and midribs of the 

 leaves, on the outer surface of the calyxes of the young fruit, as well as on 

 the fruit stems. They require about 5 to 17 days to hatch, and it is probable 

 that the great majority hatch in about 14 days under the conditions prevailing 

 on Vancouver Island. 



" Prunes, plums, and cherries, which are more tardy In their development 

 than apples and pears by almost a week, are attacked later by migrating indi- 

 viduals. The damage, which is effected on the buds of these first, is propor- 

 tionally greater than what obtains on apples and pears. It is well to bear in 

 mind that the most serious damage to the trees is associated with the buds 

 just after bursting and before blossoming. 



*Scot. Nat., 1917, pp. 111-110. 



