654 EXPERIMENT STATION RECORD. 



rence of Coleosporium sonchi-arvensis on Bonchus asper in Wisconsin. This 

 rust has for its Peridermium host some species of pine. 



ECONOMIC ZOOLOGY— ENTOMOLOGY. 



A determination of the economic status of the western meadow lark 

 (Sturnella neglecta) in California, H. C. Bkyant (Univ. Gal. Puhs., ZooL, 11 

 (1914), No. 14, pp. 377-510, pis. 4^ fif/s- o). — This is a more detailed report of 

 studies previously noted from other sources (E. S. R., 29, p. 52). A bibliog- 

 raphy of 157 titles is appended. 



The western red-tailed hawk. — Has it a money value? H, K. Dickson 

 (Univ. Cal. Jour. Agr., 1 (1913), No. 5, pp. 22-24, S3, fig. J).— This paper includes 

 an account of the habits and economic status of Butco boreaUs calurus, known 

 in California as the " squirrel hawk ". It is estimated that an annual benefit 

 of at least $18.25 is derived from the destruction of ground squirrels by a 

 single hawk. 



A laboratory g-uide to the study of parasitology, W. B. Hekms (New York, 

 1913, pp. XF+7'2). — This guide is divided into 3 parts: (1) Medical entomology 

 (pp. 1-44) ; (2) helminthology (pp. 45-68) ; and (3) life history studies on 

 living parasites (pp. 69-72). 



Thirteenth report of the state entomologist of Connecticut for the year 

 1913, W. E. Britton (Connecticut Sta. Rpt. 1913, pt. 3, pp. VIII+181-256, pis. 

 12). — The first part of this work consisting of financial and organization state- 

 ments is followed by a discussion of the work of inspecting nurseries, imported 

 nursery stock, and apiaries, and of gipsy and brown-tail moth control. 



The importance of Archips rosana as a leaf folder on privet is discussed by 

 B. H. Walden (pp. 223-226), who reports that this tortricid was the source of 

 injury to many privet hedges in New Haven during May. Notes are given on 

 its life history and habits. The tachinid parasite Exorista pyste was reared 

 from the larvse. The application of arsenate of lead at the rate of 2 lbs. to 

 50 gal. of water soon after the leaves unfold and removing and destroying the 

 infested tips are mentioned as remedial measures. Mention is next made of 

 the unusual abundance of the apple-tree tent caterpillar, a bulletin relating to 

 which has been previously noted (E. S. R., 29, p. 655). Few complaints were 

 received of injury by white grubs, which were extremely abundant in Connecticut 

 the previous year. Otiorliynchus sulcatus was the source of considerable injury 

 to Japanese yew in a nursery at Pomfret through devouring the small roots 

 and girdling the larger ones and the main stem below the surface of the ground. 



Field tests in controlling several insects attacking vegetable crops are re- 

 ported by W. E. Britton and B. H. Walden (pp. 232-237). In experiments with 

 the cabbage maggot it was found that on new ground plowed in the spring and 

 thoroughly pulverized with the disk harrow cabbage plants about which tar 

 paper disks were placed showed a much lower percentage of infestation than 

 did the check plants. Blackleaf 40 applied August 15 at the rate of 1 teaspoi>n- 

 ful to a gallon of water with soap added to act as a spreader destroyed all the 

 cabbage aphids with which it came in contact. In spraying tests of the value of 

 several insecticides in controlling the onion thrips only negative results wero 

 obtained, this being due in large part to an inability to penetrate the base of 

 the leaves below the sheath which inclosed the thrips. In spraying tests of in- 

 secticides for the pea aphis (Nectarophora pisi) blackleaf 40 gave quite satis- 

 factory results. 



Attention is called to the fact that in southwestern Connecticut and in ad- 

 joining portions of New York State many hickory trees have died during the 



