54 EXPERIMENT STATION EECOED. 



enemies of citrus. Wliile petroleum fuel oil, or crude oil, and distillate, or gas 

 oil, will give good results, yet the paraffin or lubricating oils, having a specific 

 gravity of from 24 to 28° B. have been found to possess certain qualities vrhich 

 make them superior bases for an insecticide. A formula consisting of whale- 

 oil soap 8 lbs., paraffin oil (24 or 28° B.) 2 gal., and water 1 gal. is said to 

 have given highly satisfactory results, when used at a dilution of 1 gal. to 

 50 gal. of water. This emulsion when used, with 1 per cent of oil will kill 

 the rust mite and its eggs and also the purple scale. The experiments thus 

 far conducted indicate that the oil sprays do not possess any fungicidal prop- 

 erties nor do they affect the beneficial parasitic fungi. 



Classification of the Aleyrodidae, Part 1, A. L. Quajntance and A. C- 

 Baker (t/. 8. Dept. Agr., Bur. Ent. Bui. 21, pt. 1, tech. ser., pp. 93, pis. S^, 

 figs. 11). — ^This paper deals with the morphology and classification of the 

 Aleyrodidae, or so-called white flies, several species of which are of great eco- 

 nomic importance while others are becoming so. 



The family consists of 3 subfamilies, namely, Udamoselinae, represented by 

 a single genus and species (Udamoselis pigmentaria) ; Aleurodicinae, erected by 

 the authors and represented by 4 genera (Dialeurodicus n. g., Leonardius n. g., 

 Aleurodicus, and Paraleyrodes) and 28 species; and Aleyrodinse, represented by 

 3 genera, namely, Aleurochiton, Neomaskellia n. g.. and Aleyrodes, the first 2 

 of which are represented by 3 species, while the last mentioned is reserved as 

 the subject of a later publication. 



Of the 32 species here described, 8 are characterized for the first time. 



The sugar-beet webworm (Loxostege sticticalis), F. B. Paddock {Jour. 

 Econ. Ent., 5 {1912), No. 6, pp. IfSG-US, pi. 1).—A report of biological studies 

 carried on at Sterling, Colo., during an outbreak of this pest in the summer of 

 1909 and continued during 1910. 



A serious walnut pest (Ephestia elutella), F. Maskew {Mo. Bui. Com. 

 Hort. Cal, 1 {1912), No. 8, pp. 366-371, figs. 7).— This is a brief report of 

 observations based upon material taken at quarantine from a shipment of 70 

 bags of walnuts from Shanghai, China, which had been imported from Man- 

 churia. While recorded as being cosmopolitan in its distribution, thus far 

 there are no records of its establishment in California, or even of having pre- 

 viously been obsei-ved in California. 



A contribution to the knowledge of blood-sucking Ceratopogoninee of 

 Brazil, A. Lxjtz (Mem. Inst. Oswaldo Cruz, ^ {1912), No. 1, pp. 1-33).— This 

 paper deals with the classification and biology of these flies. 



A contribution to the knowledge of the biology of blood-sucking Diptera, 

 A. LuTz {Mem. Inst. Oswaldo Cruz, 4 {1912), No. 1, pp. 75-83). — This paper 

 deals with the month parts of blood-sucking Nematocera, the oviposition of 

 the Brazilian species of Simulium, the greenish blood of Tabanidse and other 

 Diptera, and Paltostoma torrentium. 



Will the Mediterranean fruit fly (Ceratitis capitata) breed in bananas 

 under artificial and field conditions? H. H. P. Severin and W. J. Hartung 

 {Jour. Econ. Ent., 5 {1912), No. 6, pp. US-451, fig. 1; Mo. Bui. Com. Hort. Cal., 

 1 {1912), No. 9, pp. 566-569). — " Mediterranean fruit flies were bred both under 

 artificial and field conditions from ripe and overripe bananas with the peel 

 intact and from ripe bananas with the pulp exposed. Under laboratory con- 

 ditions, the peel of a green Chinese banana was removed around a longitu- 

 dinal split extending within the pulp; decay set in along this crack and from 

 this banana fruit flies were also bred. Under field conditions, green Chinese 

 bananas were hung among the branches of lemon trees; and from these ba- 

 nanas, when they became ripe and overripe, adults were reared. Fruit flies 



