529 



Eeutenmuller (W.). New Species of Rhodiles from Oregon. — 



Canadian Entomologist, London, Ont., 1, no. 9, September 1918, 

 pp. 305-309, 1 plate. 



The new gall-making species here described include Rhodites 

 •oregonensis, which forms galls on the twigs or entirely filling the 

 seed-pods of Rosa nutkana ; flies emerged from galls indoors throughout 

 March, and galls were also found in July. R. ashmeadi forms galls 

 on the stems of Rosa mUkana ; from galls received early in February 

 flies emerged during that month until 7th April. R. ostensackeni 

 -attacks the roots of Rosa nutkana, forming galls from which flies 

 emerged in early April. R. hassetti attacks the tips of twigs of Rosa 

 nutkana, forming galls which were collected in December, the flies 

 emerging during late February until mid-March. 



Malloch (J. R.). Partial Key to the Genus Agromyza (Diptera) 

 — Canadian Entomologist, London, Ont., 1, no. 9, September 1918, 

 pp. 315-318. 

 This is a continuation of a paper previously noticed [see this 



Review, Ser. A, vi, p. 328]. 



Baker (A. C). Our Birch Symydohius distinct from the European. 

 (Aphididae, Hom.). — Canadian Eiitomologist, London, Ont., 1, 

 no. 9, September 1918, pp. 318-320. 



A study of various specimens of a species of Symydohius collected 

 from birch in Ontario has led the author to the conclusion that the 

 American form is quite a distinct species from the European, S. ohlongus, 

 with which it has previously been identified. It is here described 

 as a new species, S. americanus. 



Woodpeckers and Cacao. — Jl. Jamaica Agric. Sac, Kingston, xsii, 

 nos. 2 & 3, February & March 1918, pp. 65-69 & 102-107. 

 [Received 11th November 1918.] 



A great deal of discussion having arisen as to the economic value 

 of the woodpecker and many reports having been received of its 

 damage to cacao pods, an investigation was made in order to compare 

 its usefulness as an insect eater and its harmfulness to agriculture. 

 Various local reports and letters bearing on this question are given. 

 The second paper consists of a report from the Government entomolo- 

 gist, Mr. A. H. Ritchie, on the economic status of Centurus radiolatns, 

 the only species of woodpecker occurring in Jamaica. The normal 

 food of this bird consists of fruit pulp, seeds and insects. The damage 

 "to cacao is discussed, and it is suggested that it rests with the cacao 

 grower to supply the woodpecker with fruit and seed in May, June 

 and July, that is, during the breeding season of the bird and the 

 months of maximum damage to cacao. The report concludes with 

 a summary of the insects found in the stomachs of woodpeckers. 

 Most of these are dwellers in decaying or standing timber such as 

 the Coleoptera : Helops mutabilis, generally found behind the bark of 

 trees ; Phileunis sp., in decaying coconut stems ; Ehphidion irroratum, 

 a commonly occurring Cerambycid ; Lachnojn/s aurifer, a weevil 

 abundant on foliage ; Pra&podes sp. , attacking breadfruit and cacao 



