59 



completion of the cocoon, and the adult may remain in the cell for 

 several days after transformation. The duration from the making 

 of the cocoon to the emergence of the adult was about 20 days. The 

 food of the adults is similar to that of the larvae. 



The Warble Fly.— JZ. Minist. Agric, London, xxvi, no. 10, January 

 1920, pp. 995-997, 1 plate, 4 figs. 



A popular account is given of the hfe-history and habits of the 

 two species of warble flies known in the British Isles, Hypoderma hovis 

 and H. lineatum, which together are responsible for a loss of about 

 £500,000 annually in damaged hides alone. 



It is not considered that there is much value in the various washes 

 and smears recommended for summer use. Some protection may be 

 afforded by giving the cattle access to shade and water in which they 

 can stand. One and two year-old bullocks and heifers are more 

 subject to attack than young calves, and calves more than milch cows. 

 The only known method of exterminating the pest is by squeezing 

 out the mature larvae by hand from the skin of the animal and destroy- 

 ing them. This should be done from February until the end of 

 June. When several maggots are removed from a small area of 

 skin it is advisable to apply carbohc oil. Dips and ointments may be 

 of some value, but none is yet known that is deadly to the maggot 

 and harmless to cattle. Cattle owners are urged to co-operate in 

 kiUing as many of the larvae as possible. It is considered that if 

 farmers would all take the necessary steps for two or three years the 

 insects would be almost exterminated, while the higher value of the 

 animals would soon compensate for the trouble taken in eradicating 

 the pest. 



Ludlow (C. S. ). New Siberian Culicidae ( Diptera). ^Insecutor Inscitiae 

 Menstruus, Washmgton, D.C., vii, no. 10-12, October-December 

 1919, pp. 151-161. 



Theobaldia {Culiseta) siberiemis, sp. n., Aedes grahami, sp. n., and 

 A. ajprius, sp. n., are described from central and eastern Siberia. 



Dyar (H. G.). Descriptions of hitherto unknown larvae of Culex 

 (Diptera, Calicidae). Insecutor Inscitiae Menstruus, Washington, 

 D.C., vii, no. 10-12, October-December 1919, pp. lGl-162. 



The larva of Culex (Choeroporpa) peribleptus, D. & K., is described 

 from individuals taken from grass growing along the margin of a 

 pond in Mississippi. jiN'i'^^ 



Bonne-Wepster (J.) & Bonne (C). Diagnoses of new Mosquitos 

 from Surinam, with a Note on Synonymy (Diptera, Culicidae). 



— Insecutor Inscitiae Menstruus, Washington, D.C. vii, no. 10-12, 

 October-December 1919, pp. 165-180. 



The new species here described are : — Sabethoides imperfectus 

 attacking man ; Lemmamyia {Limatus) pseudomethysticus, Dendromyia 

 roucouyana, Cleobonnea argenteorostris and Hystatomyia lamellata, all 



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