300 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 5 



G. Gandara. La plaga de las garrapatas y medics para combatirla. 

 Gircl. 22, Estacion Agricola Central, 1910. 



This circular deals with the cattle tick which occurs throughout Mexico and causes 

 enormous losses. Dipping vats are described in detail and an outline is given of a 

 method of pasture rotation which is practicable under Mexican conditions. 



L. DE LA Barreda. Doryphora de la patata. Bull. Estacion Agri- 

 cola Experimental de Rioverde, San Louis Potosi, 1910. 



This bulletin deals with obser\^ations and experiments on Leptinotarsa decern' 

 lineata made on plots of potatoes growing on the grounds of the experiment station 

 at Rioverde. The wTiter sets forth in a skillful manner considerable elementary 

 information regarding the hfe history of the insect, with the intent of interesting 

 the readers in observations on injurious insects of various kinds. After a discussion 

 of historical and biological matters, the bulletin proceeds to an account of experi- 

 ments made with Paris green which destroyed the beetles although the plants suc- 

 cumbed later to the attacks of fungus enemies. 



R. Ramirez. Mosquitas de la fruta. Circl. Estacion Agricola 

 Central, 1909. 



This leaflet deals with several species of Drosophila which appear to follow rather 

 than to cause injury to fruits of various kinds. The colored plate which accompanies 

 this circular is evidently incorrect in showing some Coleopterous lai-\'a as the larva of 

 Drosophila. 



Guillermo Gandara. Enfermedades y Plagas del Naranjo. 

 Boletin No. 31, Estacion Agricola Central, 1910. 



Professor Gdndara presents a comprehensive treatment of the diseases and insect 

 enemies of the orange in Mexico. The bulletin covers 51 pages and is accompanied 

 by 60 illustrations, many of which are colored plates. Among the insects 32 species 

 are discussed of which 16 are coccids. The list includes in addition one Aleurodid, 

 one Aphid, three Hemipterons, one Dipteron, one Lepidopteron, two ants, five 

 Coleopterons and one Acarid. 



Of most interest to American entomologists is the discussion of Trypeda ludens. 

 The pest is said to be restricted to the state of Yautepec and other localities in the 

 "tierra caliente." Reference is made to the former absolute quarantine against 

 Mexican oranges in the state of California and the statement is made that the inter- 

 diction was found to be entirely unnecessary because of the biological impossibility 

 that the insect would be able to develop in that state. 



Julio Riquelme Inda. El Gusano de los Sauces. (Clisiocampa azteca 

 Neum). Boletin No. 63, Estacion Agricola Central, 1911. 



This bulletin deals with a local pest {Clisiocampa azteca Neum) of the weeping 

 willow. In the vicinity of Mexico City this insect frequently defoliates the willows 

 during the months of March and April. In addition to the injury to these important 

 shade trees, the species is a pest on account of the numerous urticating hairs which 

 it bears. The bulletin discusses geographical distribution, amount of injury and 

 methods of control. It is accompanied by four plates. 



