191 



L\v. ; Pipiza pisticoides, Will. ; Melanosloma mellinum, L. ; Sphaero- 

 phoria ajlindrica. Say ; Syrphus americamis, Wied. ; S. ribesii, L. ; 

 S. torvus, O.S. ; S. xanthostomus, Will. ; S. nitens, Zett. ; and Didea 

 fasciata var. fuscipes, Lw. Almost all the species occurring in 

 Maine have been found to be beneficial. Practical measures are 

 suggested for the protection of these flies, and experiments are being 

 carried on which indicate that certain contact insecticides which will 

 not kill S^Tphid larvae can be used to kill Aphids. In laboratory tests 

 a solution of Black Leaf 40, 1 to 1,000 parts of water, with soap added, 

 killed every Aphid and only a small percentage of Syrphids. Besides 

 attacking Aphids, these flies are predaceous upon Coccids, and young 

 individuals of Aleurodids, Jassids, Psyllids and Membracids. A 

 few species occasionally cause serious injury to cereal crops, the most 

 important being Me^ogramma (Toxomerus) polita, which occurs on 

 maize in many of the American States, but has not yet been found in 

 Maine. Eristalis tenax, E. diniatus and E. arhustorum have been 

 known to occasion myiasis in man and animals, but such cases are 

 very rare. Keys are given to the larvae and pupae of the various 

 species. 



A bibliography of 66 works is given. 



Trabut ( — ) La Galle du Tamariz articulata dite Tak'out au Maroc 



[The Gall of Tamarix articidata, called Tak'out in Morocco.!— 



Bull. Soc. Hist. Nat. Afrique Nord, Algiers, iii, no. 2, 15th February 



1917, pp. 29-30. 



A description is given of a mite, a species of Eriophi/es, which occurs 



on Tamarix articulata in Morocco. The gall formed by it is used 



for tanning, as it contains more than 50 per cent of tannin. 



Cros (A.). Resistance vitale des larves de Stratiomyia anubis, Wiede- 

 mann. [Tenacity of Life of Larvae of Stratiomyia anubis, Wied.] 

 — -Bull. Soc. Hist. Nat. Afrique Nord, Algiers, iii, no. 2, 15th 

 February 1917, pp. 31-41. 



Experiments are described showing the extraordinary tenacity 

 of life of the larvae of the fly, Stratiomyia anubis, Wied., when subjected 

 to the action of such substances as ether, cyanide of potassium, 

 alcohol, benzine and petroleum. It is also stated that some larvae 

 and even adults of Drosupliila. rubrostriata, Beck., enclosed in sealed 

 vessels containing the heads of negroes preserved in formol, and sent 

 from German East Africa, were alive when they reached Europe. 



MiNOD (M.)& Baltzinger(G.), Notes surla Cochylis et sur le Mildiou. 

 [Notes on Clysia ambiguella and Mildew.] — Eev. de Vitic, Paris, 

 xlvi, no. 1177, 18th January 1917, pp. 37^2. [Received 15th 

 March 1917.] 



During a tour of inspection through several vineyards in the cantons 

 of Vaud and Geneva, it was found that in the higher vineyards round 

 Vevey the damage caused by Clysia ambiguella was not so severe 

 as in those at lower altitudes. Just above the lake of Geneva the 

 vineyards at an altitude of about 1,200 feet were very severely 

 attacked, but in those at Vignette the trellises above the vineyards were 

 more severely attacked than the vineyards themselves, which were 

 not so sheltered as the trellises placed against a southern wall. It 



