140 



by their covering of froth ; Metarrhizium anisopliae (green muscardine 

 fungus) ; lizards, which are more abundant than in Trinidad, probably 

 owing to the scarcity of the mongoose ; and birds, which should be 

 encouraged by the planting of bushy trees in the cane-fields. 



Sanborn (C. E.). Report of the Entomological Department. — 27th 

 Ann. Rept. for Year ending June 30, 1978, OMaJioma Agric. Expt. 

 Stu., Stillwater, 15th November, 1918, pp. 35-40. 



The false chinchbug [Nysius ericae, Uhl.] does not generally subsist 

 on cereals as the true chinchbug [Blissus leucopterus] does, but on many 

 of the succulent weeds and on garden vegetables such as turnip. Under 

 certain conditions it may be controlled by the use of the blow-torch, 

 the insects not being able to withstand as much heat as the plants 

 on which they usually subsist. 



The sexual stage of Aphis medicaginis (cow-pea aphis) occurs on 

 the common black locust tree {Robinia pseudacacia), the asexual 

 form feeding mainly on leguminous plants to the number of at least 

 20 different species. Oviposition occurs in November solely on the 

 locust tree in Oklahoma ; the presence of this tree therefore hinders 

 control measures, the chief of which is spraying with nicotine sulphate 

 at the rate of 1 pint in 100 gals, water per acre. 



CooLEY (R. A.). 15th Annual Report of the State Entomologist of 

 Montana. — Univ. Montana Agric. Expt. Sta., Bozeman, Bull. no. 

 124, February 1918, pp. 195-208. [Received 30th January 1919. ] 



The occurrence of the more common insect pests of 1917 is recorded 

 in this report and the connection between economic entomology and 

 the War is discussed. 



In connection with the grasshopper outbreak of 1917, it was found 

 that eggs were present in abundance in the middle of April, as well as 

 some dead grasshoppers of the previous year, with evidence of the 

 damage done by them to winter wheat. Eggs were mainly found 

 around lucerne and clover fields, many larvae and adults of a species 

 of Harpalus (ground beetle) being found with them. The first eggs 

 hatched about 15th May. The outbreak occurred in scattered localities 

 throughout the State, in some spots being so severe that everything 

 green was eaten off, and much greater damage would have resulted 

 had not co-operative control work been undertaken. The grasshopper 

 remains found in April were those of Melanoplus atlantis, Riley, or 

 a closely related species, but those emerging in July more closely 

 resembled the Rocky Mountain migratory locust [M. spretus\. 



The presence of many flesh-flies (Sarcophaga) which parasitised the 

 adult grasshoppers was probably the factor controlling this outbreak. 

 No eggs were found during a search in autumn, and it is therefore 

 hoped that there will be no serious injury in the next season. 



* « 



CooLEY (R. A.). The Entomology Department.— ^4«A Ann. Rept. for 

 Year ending June 30, 1917, Univ. Montana Agric. Expt. Sta., 

 Bozeman, February 1918, pp. 242-248, 1 map. [Received 30th 

 January 1919.] 



Estimates of insect damage are always given in terms of losses 

 caused by insects, while the saving effected by control has been. 



