79 



being injured beyond recovery. Natural enemies were the predacious 

 beetle, Calosoma frigidwn, Kirby, and the bug, Podisus modestus, Dall., 

 which both fed on the caterpillars, as well as numerous parasites. 

 Anisota rubicunda, F. (striped maple worm) was frequently abundant, 

 but hardly ranked as a serious pest. Piens (Pontia) rapae, L., was 

 exceedingly numerous in July, and very few seemed to be parasitised. 

 Melittia satyriniformis , Hb. (squash-vine borer) and Hyphantria ctinea, 

 Drury, were also unusually abundant. 



Morse (A. P.). Orthoptera of Maine. Grasshoppers and Related 

 Insects. — Maine Agric. Expt. Sta., Orono, Bull. 296, March 1921, 

 36 pp., 25 figs. [Received 7th December 1921.] 



The author here deals with the Orthoptera of Maine on lines similar 

 to those of his manual of the Orthoptera of New England [R.A.E., 

 A, ix, 2871. The various families are enumerated, with their character- 

 istics, mode of oviposition, characters of the young, their development 

 and descriptions of the stages. The chief forms of injury caused by 

 them are reviewed, with discussion of remedial measures. A key is 

 given to the early stages of destructive species, with notes on injurious 

 indoor species, recent immigrants into New England, a key to the 

 families in the adult stage, and a list of 74 species occurring in Maine, 

 with notes on their habits and abundance. 



The most destructive species are Melanoplus atlantis, M. femur- 

 ruhruni, M. hivittatiis and Camnula pellucida, M. atlantis and C. pellu- 

 cida generally outnumbering the other species in dry situations. At 

 least one species is added to the known fauna of the State, namely, 

 Arphia xanthoptera. 



Schneider-Orelli (O.). Reblausversuche im Kanton Zurich. [Vine 

 Louse Experiments in the Canton of Zurich.] — Landw. Jahrb. 

 der Schweiz, Lucerne, xxxv, 1921, no. 5, pp. 481-509. 



The chief aim of the experiments, begun in 1914 and described 

 here, was to ascertain the effect of PhyUoxera-inie&ied. material from 

 Zurich on the varieties of American vines commonly used for recon- 

 structing vineyards. 



Swiss vines were severely attacked, while the American vines exhibited 

 varying degrees of resistance. Their behaviour when growing free 

 was different from that when grown in pots. Such American plants as 

 had become infested when in pots became free from Phylloxera when 

 their roots succeeded in reaching the free soil. 



It is clear from these tests that some American stocks are resistant 

 to Phylloxera as found in Zurich, and that there is no danger of 

 ungrafted native vines being infested from adjacent vine3'ards planted 

 with grafted vines, unless the graftings are allowed to put out roots. 



The progress of infestation on old native vines was watched, and 

 it was found that even in the seventh year of infestation the grapes 

 were not affected to any marked degree in quality or quantity. 



Numerous breeding experiments showed that the progeny of the 

 winged Aphids all belong to the sexual generations without a proboscis, 

 so that a direct attack on the roots by them can be excluded. As no 

 vine-louse leaf-galls have hitherto been seen in the Zurich region, it 

 may be assumed that the winged Aphids are unimportant there. 

 It would appear that the aerial, alate and sexual forms and the winter 



