162 



are capable of destroying the beetles unaided, but the time required 

 would be so long that much damage would be done. To shorten 

 the period it is necessary to clear up the broken timber. When 

 doing this the preferred breeding-places of the parasites must be 

 left untouched until the end of the operations. This method appears 

 to provide a sure means of checking even serious outbreaks of 

 bark-beetles. 



Enslin (E.). Beitrage zur Kenntnis der Tenthredinoidea, iv, v, vi 



(Hym.). [Contributions to the Knowledge of the Tenthredinoidea, 



iv, V, vi.]—Entom, Mitt., Berlin, vi, no. 7-9. 29th September 



1917, pp. 238-243, 2 figs. ; vii, no. 4-6, 1st June 1918, pp. 77-80, 



3 figs. ; viii,no. 4-6, 14th June 1919, pp. 78-83, 3 figs. [Received 



12th February 1920]. 



The first of these papers deals with parthenogenesis in Lophyrus 



and with oviposition in saw-flies generally : the second with abnormal 



saw-fly galls, with the various galls of Euum atra, Jul., and with the 



larva of Megalodontes Mvgi, Leach {spissicornis, Kl.) ; and the third 



with the larvae of Phyllotonia vagans, Fall., Feymsa doJirni, Tischb., 



and Pristijjkora viridana, Knw. 



Enslin (E.). Blattwespengallen. [Saw-flv Galls.] — Internat. Enlom. 

 Zeitschr., Guhen, x, no. 3, 6th Mav 1916, pp. 13-15, no. 4, 20th 

 May 1916, pp. 17-19, no. 5, 3rd' June 1916, pp. 21-2, no. 6, 

 17th June 1916, p. 29, no. 7, 1st July 1916, p. 33, 18 figs. 



The European saw-flies dealt with are those of the genera, Euura 

 and Pontania. The galls made by these insects on various plants 

 are figured, as well as the saw-hke effect produced on the leaves by 

 their attack. 



ZuKowsKY (B.). Aphoristische Skizze uber die bisher bekannt 

 gewordenen Futterpflanzen der palaarktischen Aegeriidae. [A 

 concise Outhne of the known Food-plants of the Palearctic 

 Aegeriids.] — Internat. Entom. Zeitschr., Guhen, ix, no. 15, 23rd 

 Oct. 1915, pp. 77-99. 

 The article is arranged in tabular form according to the plant 



family, with indications as to which part of the plant is attacked. 



Bertrand (G.), Brocq-Eousseu & Dassonville. Action compar6e 



de la Chloropicrine sur le Charan^on et sur le Triholium. — C. R. 



Hebdom. Acad. Sci., Paris, clxix, no. 26, 29th December 1919, 



pp. 1428-1430. 



The Tenebrionid beetle, Triholium navale, F., attacks a variety 



of cereals, but only those grains that have been already infested by 



weevils [Calandra]. To destroy it T. navale must be exposed for 



a longer time to the action of chloroi)icrin than is necessary for the 



wee^'ils. 



Chopard (L.). Observations sur^la Mante religieuse et ses Parasites. — 



C. R. Hebdom. Acad. Sci., Paris, clxx, no. 2, 12th January 1920, 

 pp. 140-143. 

 Besides a number of Sphegids that feed their larvae on young 

 individuals of Mantis religiosa, there are certain Hymenoptera that 



