852 EXPERIMENT STATION EECORD. 



.•iiiimals, fruit trees nnd bushes, corn crops, root crops, pulse, hops, vegetables, 

 ;;iid flowers, those causing annoyance to man, and those injurious to buildings, 

 furniture, stores, and food. An account of the life history of the pear tlirips, 

 Eiithrips pyri, in England as followed by the author is- include'l. 



Hosts of insect egg parasites in North and South America, II, A. A. 

 GiRAULT (Psyche, 18 (1911), No. J/, pp. I.'i6-153). — This is in continuation of the 

 paper previously noted (E. S. R., 19, p. 57). 



[Mexican insect pests] (Estac. Agr. Cent. [Mexic()'\, WOO, Circ. 12, pp. 2, 

 pi. 1; 1910, Circs. 22, pp. 9, pis. 6; 26, pp. 8, pis. J/; 33, pp. 11. pi. i).— These cir- 

 culars are devoted to the fruit flies, ticks, ectoparasites of fowls, and the bean 

 conchuela (Epilaclina cornipta), and are by R. Ramii-ez, G. Gandara, A. Mada- 

 riaga, and J. R. Inda, respectively. 



Friendly insects, W. W. Froggatt (Dept. Agr. N. jS'. Wales, Farmers' Bui. 

 Sff, 1910, pp. 18, pis. Jf, figs. 15). — This is a popular account of the parasitic and 

 predaceous insects of Australia. 



A contribution to the study of insects injurious to cotton in the Trans- 

 caspian District, B. Uvarov (Russ. Ent. Ohozr., 11 (1911), No. 1, pp. 28-37).— 

 This article treats briefly of the various insect pests of cotton in the Trans- 

 caspian District. 



The cacao thrips (Heliothrips rubrocinctus), F. W. Urich (Dept. Agr. 

 Trinidad Bill., 10 (1911), No. 67, pp. 66-73; reprint, pp. 10, i)ls. 3).— This sum- 

 marized account of H. ruhrocirvctus includes a description of its several stages. 

 The cashew tree is said to be one of the favorite food plants of this species, 

 the author being led to think that it may be the original one. In some localities 

 certain cashew trees lose their leaves regularly through its attack. The author 

 has also observed thrips on guava, roses, almond (Terminalia catappa), and 

 mango, as well as cacao. 



Two new capsid bugs, resembling the tea mosquito bug, found attack- 

 ing bamboos on gardens in Cachar, C. B. Antram (Indian Tea Assoc., Sci. 

 Dept. Quart. Jour., 1911, No. 2, pp. 1-3, pis. 2). — A brief account of Mystilus 

 manni and M. antrami. 



Kesults obtained in the study of the froghopper during the wet season of 

 1910, L. H. GouGH (Dept. Agr. Trinidad Bui., 10 (1911), No. 67, pp. 5-50, pis. 

 7, fig. 1). — The author here reports studies conducted, under the headings of 

 (1) history of the froghopper blight in Trinidad, compiled from published 

 records; (2) the symptoms and results of the blight; (3) life history of the 

 froghopper, including its geographical distribution; and (4) methods of pre- 

 vention of the damage caused. 



On some Coccidae affecting rubber trees in Ceylon, with descriptions of 

 new species, E. E. Green (Jour. Econ. Biol., 6 (1911), No. 2, pp. 27-37, pis. 

 2). — Four species affecting rubber trees are described as new, namely, Inglisia 

 castillow, Mytilaspis fasciata, Tochardia alhizzice, and Dactylopius crotonis. 



Spraying for the melon aphis, M. 11. Swenk (Nebraska 8ta. Rpt. 1910, pp. 

 35-57, figs. 5). — Following a brief account of the life history, habits, and injury 

 of this species, spraying experiments are reported. Lady beetles and their 

 larvae are thought to be the most valuable and effective of the natural enemies, 

 especially Hippodamia convergens. The larva of Allograpta obliqua is the most 

 abundant and useful of the 4 species of syrphus flies, and the larvae of Chry- 

 sopa oculata, C. nigricomis, and probably other species are important enemies 

 of the pest. 



In experiments conducted with kerosene emulsion, it was found that in order 

 to destroy the aphids it must be used at a strength that would burn the 

 tender leaves. Experiments were then made with 5 other washes, namely, 



