40 



La Fourmi-Manioc en Guyane {At/a sexdens, L.) — BuU. Soc. Etude 

 Vulg. Zool. Agric, Bordea)ix,xiv, no. 11-12, November-December 

 1915, pp. 90-91. [Received 24th November 1916.] 

 The information contained in this article lias ah'eady been abstracted 



[see this Revieiv, ii., p. 223]. 



D6p6rissement des Grangers caiis6 par un Nematode. [Damage to 

 Orange-trees caused by a Nematode.] — Bull. Soc. Etude Vvlg. 

 Zool. Agric, Bordeaux, xiv, no. 11-12, November-December 1915, 

 p. 91. [Received 24th November 1916.] 



Examination of the roots of orange-trees, which were dying in large 

 numbers in Algeria, has revealed the presence of a Nematode, Tylenchulus 

 .semipenetrans. Cobb. Since Cobb's observations on this pest in 

 California, it has been found in Spain, Syria and Australia. Treat- 

 ments with carbon bisulphide and sulphocarbonates are being tested 

 as control measures. 



La Mouche des Fruits aux Environs de Paris. [Fruit-fly in the neigh- 

 bourhood of Paris.] — Bull. Soc. Etude Vulg. Zool. Agric, 

 Bordeaux, xiv. no. 11-12, November-December, 1915, pp. 91-93. 

 [Received 24th November 1916.] 



In October 1914, Ceratitis capitata, Wied., was bred from late pears 

 gathered at Asnieres (Seine), the locality being the same as that in 

 which Giard first recorded this insect in the neighbourhood of Paris 

 in 1900, and again in 1906. It would be interesting to elucidate the 

 method of hibernation of this troj^ical insect in the European climate. 

 The duration of the pupal stage, which in Italy is from 10 to 11 days in 

 summer and may be as long as 30 days in winter, leads to the conclusion 

 that hibernation must take place in this stage. The apparently 

 permanent presence of the fruit-fly in this region must be regarded as 

 a new and serious danger to fruit culture ; it is hoped that the attempts 

 to introduce some of its parasites into Italy and the Hawaiian islands 

 may give satisfactory results. 



Feytaud (J.). Sur I'lnvasion d'Otiorhynques de Saint-Pierre-d'Oleron. 



[On the Invasion of Oiiorrhynchus in Saint-Pirrre-d'Oleron.] — 

 Bull. Soc. Etude Vulg. Zool. Agric, Bordeaux, xv, no. 9-10. 

 September-October 1916, pp. 102-105. - 

 OtiorrJigncJ/us sidcatus, F., had become very abundant on the island 

 of Oleron when the author began his investigations in August 1913 

 [see this Revieiv, Ser. A, ii, p. 229], and a considerable amount of damage 

 was done in the vineyards. Oviposition having been completed in 

 June and July and the next generation being therefore assured, the 

 destruction of the adults would have been of little use. The young 

 larvae had already begun to attack the roots, causing much" more 

 serious, although less obvious, damage than the adults. Prolonged 

 submersion was impracticable and injections of bi-sulphide of carbon 

 would have been costly and very little use in view of the sandy nature 

 of the soil. The use of poultr}' was suggested for destroying lar^^ae 

 turned up by the plough, and immediately outside the affected zone 

 a barrier of several sulphated rows was renewed every 8 days, in 

 June and July. 



