356 EXPERIMENT STATION EECORD. 



order that the infestation may be checked and the pest controlled before it 

 scatters over the entire field. 



The control of plant lice on apple trees, H. E. Hodgkiss and B. B. Fulton 

 {'New York State Sta. Circ. 23, pp. 7, pis. 1,, figs. 6). — A popular account of these 

 pests with directions for the application of remedial measures. 



The phylloxera invasion and the reconstitution of vineyards in Spain, 

 R. J. Janini (Abs. in Internat. Inst. Affr. [Royne], Bui. Bur. Agr. Intel, and 

 Plant Diseases, 3 (.1912), No. 12, pp. 2762-276.',).— A somewhat detailed discus- 

 sion of the subject. 



A new California coccid infesting Manzanita (Aulacaspis manzanitae 

 n. sp.), B. B. Whitney {Jour. Ent. and Zool., 5 {1913), No. 1, pp. 50-52, figs. 

 2). — This new species has been collected at several points in California, havinf? 

 invariably been found on Manzanita species at an elevation ranging from 1,B22 

 to 4,701 ft. above sea level. 



The disastrous occurrence of Vanessa californica in California and Oregon 

 during the years 1911-12, F. M. Webster {Canad. Ent., J,5 {1913), No. Jf, 

 pp. 117-120). — The larvse of this butterfly are reported to have nearly de- 

 stroyed the alfalfa crop at Lake View, Oreg., in July, 1911, and to have been 

 the source of injury at other points in Oregon and in California in 1911 and 1912. 



Arsenate of lead as an insecticide against the tobacco hornworms, A. C. 

 Morgan and D. C. Parman {U. 8. Dept. Agr., Bur. Ent. Circ. 173. pp. 10). — In 

 view of the fact that Paris green frequently bums tobacco very severely and 

 may reduce the value of the crop as much as 50 per cent in exceptional cases, 

 the authors recommend that arsenate of lead be used and that it be applied in 

 dust form or powder. The dosage of arsenate of lead in powdered form varies 

 from 3i lbs. to 5 lbs. per acre, and when applied as a spray from 3 to 4 lbs. in 

 100 gal. of water. Dry wood ashes used in a bulk eqijal at least to the arsenate 

 of lead are said to be the best carrier for arsenate of lead in powdered form. 

 The application should be made with a dust gun having a fan diameter of at 

 least 8 in., and applied when there is no breeze and when dew is on the plants. 



The naaize stalk borer and its control (Sesamia fusca), W. Moore {Agr. 

 Jour. Union So. Africa, 5 {1913), No. 3, pp. Ifl9-.'f2S, figs. 5).— A discussion of 

 the life history and methods of controlling the maize stalk borer, its natural 

 enemies, etc. This insect is said to be the most serious enemy of maize in 

 South Africa, particularly on the high veld. 



Some notes on Laphygma frugiperda in Porto Hico, T. H. Jones {Jour. 

 Econ. Ent., 6 {1913), No. 2, pp. 230-236). — This paper deals with the occurrence, 

 life history, and enemies of, and an experimental poison bait for, the fall array 

 worm in Porto Rico, where it is a pest of considerable importance. 



It has been found at the experiment station of the Porto Rico Sugar Pro- 

 ducers' Association to attack sugar cane, Panicnm barbinode, corn, and onions. 

 Three tachinid parasites (Frontina archippivora, Gonia crassicomis, and 

 Archytas piliventris) have been reared from this insect at Rio Piedras. The 

 larvse of Remigia repanda are said to accompany the fall army worm. The 

 lan'ffi of L. frugiperda prefer to work among the opening leaves of the cane, 

 while those of Remigia repayida work upon the unfolded leaves, the older as 

 well as the younger portions of the plants being eaten. 



The 1912 outbreak of Alabama ^rgillacea in Peru, C. H. T. Townsend 

 {Jour. Econ. Ent., 6 {1913), No. 2, pp. 2'///-246).— The author reports that dur- 

 ing the first few months of 1912 the cotton-leaf caterpillar multiplied in extra- 

 ordinary numbers in the cotton districts of the Peruvian coast region from 9° to 

 nearly 12° south latitude, and more or less unusually and generally to the 

 northward as far as Piura Department. Complete defoliation is said to have 



