ECONOMIC ZOOLOGY' ENTOMOLOGY. 757 



hardy and int^re iiTeguIar in habits of ()viiK)silion. Jh'fails ivlatinj; to the obser- 

 vations re])()rted are jtrosented in tabular form. 



Keconnoissance of fruit fly parasites, W. M. Giffard {Ilawuii. Forester 

 and Ayr., 11 (I'Jl.'i). \o. 11. p/>. .Il'f-,i37). — Investij?ations made in tlie I\ona 

 district on the island of Hawaii during October by the author and E. A. Bacli, 

 of the Bureau of Entomoioj:y of this Department, show that tlie braoonid ]iai"a- 

 sites Oi)iiis huniUi.1 introduced from Soutli Africa and DidcJiasind fri/diti from 

 Australia by Silvestri have be<:'ome established and are increasinj? in nmubei's. 

 It was found that the infestation of coffee berries by the fruit fly in this dis- 

 trict durinj; the year was at least 'A> per cent less than in 1913. 



Sheep maggot flies, W. W. Frocgatt {Aijr. Gaz. y. H. Wales, 25 (191Jf), No. 

 !), pp. 1/56-758. pi. 1). — This is a description of the more common sheep maggot 

 flies, accompanied by a colored plate, with the eight si>ecies described. 



The parasite of the sheep maggot fly (Nasonia brevicomis). W. W. Frog- 

 GATT (A (jr. Qaz. y. -S. Wales, 25 (191.',), Xo. 9, pp. 759-1 6 J,). —Thin chalcidid. 

 originally described from Illinois in 1009 (Vl S. K., 23. p. IGl). where it was 

 reared from pupne of dift'erent species of Dijitera and since recorded from Chile, 

 is reported by the author to have been discovered in Now South Wales and 

 Queensland, and to be a common parasite of the imparia of the blow flies, there 

 known as ''sheei)-maggot flies." 



In breetliug exi)eriments in which all kinds of blow flies and maggots were 

 used it was found that the parasite showed a preference for the smooth, thin- 

 skinned pupifi of CaUiphora rillosa, C. oceaniw, and C. erythroccphala, and 

 infested the stoutly-spined pupse of C. rufifacies only when the others were 

 unobtainable. The very noticeable decrease within a few years of the common 

 yellow blow flies and Ophi/ra nigra in the Northwest during the summer months 

 leads the author to think that these parasites first attacked the pupte of those 

 blow flies with smooth pupse and have only recently turned their attention to 

 the harder spiny pupte of the " hairy maggot " of C. rufifacies. 



Ten generations of this parasite are said to have been produced in the course 

 of six months from a few hundred of parasitized pupie originally collected at 

 Brewarrina. The eggs hatch in about three days' time, seven days are required 

 for the development of the larvie, and about five days are passed in the pupal 

 stage. 



The eradication of the sheep tick, !>. D. Swingle (Wyonihig Slta. Bui. 105 

 (1915), pp. 27-.'i7). — This is a report of experiments with a number of dips for 

 controlling the sheep tick, a life-history study of which has been previously noted 

 (E. S. R.. 29, p. 756). It appears that one dipping can not invariably be de- 

 pended upon to eradicate the tick, while two dippings, with an interval of 24 

 days during warm weather and 26 days in the spring or fall, either with coal- 

 tar products or with Cooper's Powder will absolutely destroy them. Early fall 

 appears to be the best time for the dipping. 



List of Tachinidce from the Province of Quebec, J. D. Tothill (Ottawa 

 Nat.. 28 (1914), No. 9. pp. ll.i-1 16). —Forty -nine species of this family of dip- 

 terous parasites are listed as occurring in the Province of Quebec. 



[The hen flea (Sarcopsylla gallinacea)], E. V. Wilcox (Hawaii Sta. Rpt. 

 1914, P- ^4)- — This pest made its appearance in Honolulu during the year and 

 is said to be spreading rapidly. In a test of several insecticides it was found 

 that a single application of kerosene killed about 75 per cent of the fleas. All 

 of the fleas were killed by an application of carbolated vaselin (2 per cent 

 carbolic acid) and by a 3 per cent solution of carbolic acid in glycerin and 

 water. Zenoleum in a 3 per cent solution was about as effective as kerosene. 

 The trouble is said to be so serious that ix>ultry raisers should thoroughly spray 



