178 



an appreciable percentage of the South American locust, Schistocerca 

 parmiensis, bv means of ingestion of virulent cultures of Coccobacillus 

 acridiarum, still remains doubtful. Judging from the negative results 

 obtained by the Argentine Coimnission in their repeated attempts, it 

 seems probable that in practice, where the chances against success 

 are much greater than in the laboratory, the microbe would prove 

 quite valueless. The question of the economy of this method is also 

 doubtful. The conclusions reached by Yelu in his work in Morocco 

 are also quoted [see this Review, Ser. A, v, pp. 99, 483]. 



Philbrook (E. E.). Report of the Special Field Agent in Charge of 

 Gypsy Moth Work. — 13th Ann. Rept. Maine Commissioner Agric., 

 1914; Watervilk, 1915, pp. 116-124, 5 plates. [Received 5th 

 AprH 1918.] 



During 1914 the work of the parasite laboratory in the control of 

 the gipsy moth [Lymantria dispar], resulted in the breeding and 

 liberation of large numbers of Compsilura concinnata and Calosoma 

 sycophanta, and of two small colonies of Schedius kuvanae, the egg- 

 parasite of the gipsy moth. Large numbers of Apanteles lacteicohr 

 and Meteorus versicolor, parasites of the brown-tail moth [Nygmia 

 phaeorrhoea, Don.], were also successfully bred [see this Review, Ser. A, 

 ii, p. 135]. 



Field work in the most hea\'ily infested districts was carried out 

 during the year by every known method, such as destroying the egg- 

 clusters with, creosote, spraying in early spring and again in August 

 with lead arsenate, and taking and destroying the caterpillars by 

 means of burlap in June, July and August. During these months 

 millions of caterpillars were also killed by the bacterial wilt disease 

 known as flacherie. 



Summers (J. N.). Work with Parasites of the Gypsy and Brown-tail 

 Moths in Maine. — 14th Ann. Rept. Maine Cmnmissioner Agric, 

 1915; Waterville. 1916, pp. 116-127, 4 plates. [Received 5th 

 April 1918.] 



Details are given of the rearing in the laboratory and the distribution 

 of the parasites of the gipsy moth [Lymantria dispar] and of the brown- 

 tail moth [Nygmia phaeorrhoea], and some account is given of the 

 history and habits of these parasites. They include Atiastatus bifas- 

 ciatiis, Apanteles lacteicolor, Meteorus versicolor, Compsilura concinnata; 

 the predaceous beetle, Cahsoma sycophanta, and Monodontomerus 

 aereus, which is a widely-known Chalcid parasite of these two moths, 

 though its value is somewhat questionable. 



Cadey (E. J.). Report of Special Field Agent in Charge of Gypsy Moth 

 Work. — 14th & 15th Reps. Maine Commissioner Agric. 1915 & 

 1916; Waterville, 1916 & 1917, pp. 109-115 & pp. 80-83, 1 plate. 

 [Received 5th April 1918.] 



During the years under re\'iew work was energetically pursued in 

 ■control of the gipsy moth [Lymantria dispar] and the brown-tail moth 

 [Nygmia phaeorrhoea, Don.], which are described as the most feared 

 and most formidable pests in the world. Details are given of the 



