226 



to planting out, or better still, the seed-beds may be well watered 

 before spraying. This procedure ensures that only protected plants 

 are placed in the field. Under normal conditions this procedure 

 affords protection for 6-8 days. 



Loos (K.). Zug eines machtigen Nonnenschwarmes fiber das Glatzer 

 Gebirge in die Tscheehoslowakei. [The ^ligration of an enormous 

 Nun IMoth Swarm over the Glatz Mountains into Czechoslovakia.] 

 — Vcreinsschr. Forst-, Jagd- ii. Naturk., Prague, 1920-21, no. 4-6, 

 pp. 60-62. 



The passage of a huge swarm of nun moths [Liparis monacha] 

 from Prussian Silesia into Czechoslovakia was observed in the after- 

 noon of 18th July 1920. It was estimated to be about 15 feet deep 

 and 600 yards wide, and was observed for 20 minutes. It is note- 

 worthy that the flight occurred by day, with the wind, and over a 

 peak more than 4,000 feet high. 



Menzel (R.). Ueber die Nahrung der freilebenden Nematoden und die 

 Art ihrer Aufnahme. [On the Nutrition of free-living Nematodes 

 and the Method of Ingestion.] — Verhandl. Natitrf. Ges., Basel, 

 xxxi, 1919-20, pp. 153-188, 5 ligs. 



The observations and experiments described in this paper confirm 

 those already- made by Cobb with regard to predatory Nematodes. 

 Representatives of the genera Mononchus, Tripyla and Trilohus have 

 been proved to feed on invertebrates, and may be useful for the bio- 

 logical control of species that are harmful to agriculture [cf. R.A.E., 

 A., ix, 97]. 



Lesxe (P.). Un Foyer de Multiplication de la Mouche des Fruits 



{Ceratitis capitata, Wied.) aux Environs de Paris. [A Breeding- 

 ground of C. capitata in the Neighbourhood of Paris.] — C. R. 

 hebdoni. Acad. Set., Paris, clxxii, no. 8, 21st Februarj^ 1921, 

 pp. 490-491. 



Attention is drawn to the fact that Ceratitis capitata, Wied., has 

 apparently become established in the region of Asnieres and Courbevoie. 

 Larvae, presumably of the second generation, were found in a late 

 variety of pear in September. The first generation probably attacked 

 apricots in July. 



Beri.ese (A.). Acari, Myriopoda et Pseudoseorpiones hucusque in 

 Italia reperta. [Italian Acari, Myriopoda and Pseudoscorpions.] 

 — Redia, Florence, xiv, no. 1-2, 10th February 1921, pp. 77-105. 



This is a reprint of the index, with revised nomenclature, of the 

 species in the author's work under the above title, begun in 1882 and 

 suspended in 1903. This has been found necessary owing to the 

 abundance of material, and the continuance of the work, at least 

 on the old lines, is scarcely possible. 



