286 



the seed peas with carbon bisulphide, by heating them to 140^ F., or 

 by holding the peas over for a season ; the corn-ear worm, Heliothis 

 obsoleta, by deep ploughing to expose and kill the pupae ; and the 

 onion thrips, Thrijps tabaci, by sprays of kerosene emulsion or Black- 

 leaf 40. 



Formulae are given for all tlie sprays and poisons mentioned. 



Banks (N.) & Snyder (T. E.). A Revision of the Nearctic Termites, 

 with Notes on Biology and Geographic Distribution. — U. S. Nat.' 

 Mus., Washington, D.C., Bull. 108, 1920,228 pp., 35 plates. 70 figs. 



The first part of this volume is a systematic monograph of the 

 Nearctic termites. One new genus is erected and, of the thirty-six 

 .species described, seventeen species and one variety are new. Keys 

 are given to the families, sub-famihes, genera and species, and the 

 insects' structure, classification and distribution are discussed. 



The second part deals with the biology of the Nearctic termites. 

 Tliey are divided into groups according to their habits, and their 

 life-history is described, with the damage they do and the methods of 

 preventing this. An account is given of their parasites and other 

 natural enemies, as well as of the insects found associated with them. 

 Biological notes are also given on the individual species. 



Bezzi (M.). Fruit Flies of the Genus Dacus {sens, lat,) (Diptera) 



from the Philippine Islands, — PkiUpjnne Jl. Science, Manila, 



XV, no. 5, November f919, pp. 411-444, 2 plates. [Received 



18th May 1919.] 



This systematic paper describes 23 species of Dacinae from the 



Philippines, ten species and four varieties being new. Keys are given 



to the genera and to the Philippine species contained in them. Among 



the species mentioned is Monacrostichus citricola, Bezzi, reared from 



fruits of Citrus. 



GossARD (H. A.). Insects resembling European Corn Borer. — Mthhj. 



Bull. Ohio Agric. Exjjt. Sta., Wooster, iv, no. 12, December 1919, 



pp. 372-379,' 8 figs. [Received 20th April 1920.] 



Careful watch is being kept in Ohio for the European corn borer 



[Pyrausta nubilalis]. A brief description is given of the habits and 



character of damage caused by insects that have been mistaken for 



this moth including : — Heliothis obsoleta (corn-ear worm), Hadena 



frnctilinea (lined stalk borer), Crambus spp. (sod webworms), Pijronsta 



ainsliei, Depressaria heracleana (parsnip webworm), and a Dipteron, 



Chaetopsis aenea (corn-stalk maggot). The best remedial measures 



for these pests are discussed. 



Naumann (A.). Ein neuer Schadling des Kartoffel-Krautes. [A 



new Pest of Potatoes.] — Sachs, landw. Zeitschr., 1917, no. 41, 

 pp. 571-572. (Abstract in separate from Zeitschr. landw. 

 Versuchswesen in Oesterreich, Vienna, xxi, 1918, p. 7 (143).) 

 In Saxony potatoes have been injured by a Psyllid, Aphalura nervosa, 

 Forst. Though the outbreak in question w^as of no economic import- 

 ance, it was thought advisable to recommend the burning of infested 

 plants as a precaution against the spread of the insect. 



