535 



Severin (H. H. p.). Sea Coast Flea Beetle {Disonycha maritima, 

 Mann.) injurious to Sugar Beets in Sacramento Valley, California. — 



//. Econ. Ent., Geneva, N. Y., xv, no. 4, August 1922, p. 312. 



During May of 1919 and 1920 Disonycha maritima, Mann., was very 

 abundant on certain beet fields in California, causing injury by feeding 

 on the foliage and gnawing holes in the roots. By the end of June 

 no adults could be found. 



WoLcoTT (G. N.). The Distribution of the Pink Bollworm of Cotton, 



Pectinophora gossypiella, Saunders, in Porto Rico. — //. Econ. Ent., 

 Geneva, N. Y., xv, no. 4, August 1922, pp. 313-314, 1 map. 



Soon after the first discovery of Platyedra {Pectinophora) gossypiella, 

 Saund., in Porto Rico in July 1921, it was found throughout the 

 cotton-growing section of the island. An account is given of the 

 distribution of this moth as ascertained by a survey made during the 

 winter and spring of 1922. 



Wellhouse (W. H.). The Apple Red Bug {Heterocordylus malinus, 

 Reut.). — //. Econ. Ent., Geneva, N.Y., xv, no. 4, August 1922, 

 p. 318. 



The author considers Crataegus to be the preferred and probably the 

 original food-plant of Heterocordylus malinus, Reut. 



Severix (H. H. p.). Infective Beet Leaf hoppers [Eutettix tenella, 

 Baker) do not transmit Curly Leaf daily. — Jl. Econ. Ent., Geneva, 

 N. Y., XV, no. 4, August 1922, p. 318. 



From the experiments described it is evident that individuals of 

 Eutettix tenella. Baker, that have completed all the nymphal instars 

 on infected beet do not transmit curly leaf daily. 



VVoLcoTT (G. N.). El Minador de las Hojas del Cafe, Leucoptera 

 coffeella. Stain. [The Coflee Leaf-miner, L. coffeella.} — Porto Rico 

 Insidar Expt. Sta., Rio Piedras, Circ. 52, October 1921, 12 pp., 

 6 figs. [Received 23rd August 1922.] 



In Porto Rico the most common parasite of the leaf-mining larva 

 of Leucoptera coffeella, Stn., is Chrysocharis livida, Ashm., Zagram- 

 mosoma multilineata, Ashm., being scarcer. In Cuba an emulsion of 

 1 part whale-oil soap and 1 part petroleum in 8 parts water has been 

 used against the larvae and pupae, and also a less costly nicotine 

 spray, such as Black-leaf 40. In Cuba, dry weather has been found 

 to decrease infestation. P'or Porto Rican conditions this action of 

 the weather in conjunction with that of the natural enemies mentioned 

 must be relied upon under ordinary circumstances. Manuring to 

 promote a vigorous growth and spraying with nicotine are exceptional 

 measures. 



WoLcoTT (G. N.) & Sei'n Jr. (F.). Los Caculos cornudos, o los Escara- 

 bajos Rinocerontes de Puerto Rico. [The Rhinoceros Beetles of 

 Porto Rico.] — Porto Rico Insular Expt. Sta., Rio Piedras, Circ. 

 58, 1922, 12 pp., 4 plates. 



This is a resume of a paper by E. G. Smyth [R.A.E., A, ix, 573]. 



