26 



literature, are given of its habits and of the appropriate measures-, 

 against it. Those advised are the use of repellents, such as nicotine 

 sulphate or mercury bichloride, the poisoning of the fungus, Roziies 

 gongylophora, cultivated in the nests, the collection and destruction 

 of the females, and fumigation of the nests. 



Zetek (J.). La Oruga de los Pastes. [The Grass CaterpiUar.] — 

 Reprint from Rev. La Salle, Panama, September 1920, 6 pp., 

 1 fig. [Received 8th November 1921.] 



The southern grass-worm, Laphygma friigipeyda, S. & A., does much 

 damage to pastures and crops in Panama. The caterpillars must 

 be noted when they first appear, as it is very difficult to deal with 

 them when they are mature. Spraying with the arsenates of lead, 

 lime or zinc, or the use of a poison-bran bait, may be resorted to. 

 Rolling is also a valuable measure on pasture land. Trap-trenches 

 account for large numbers, and the pupae may be destroyed by 

 ploughing. 



Zetek (J.) . La Mosca Prieta en Panama. [The Black Fly in Panama.] 

 — Reprint from Rev. La Salle, Panama, December 1920, 6 pp., 1 fig., 

 [Received 8th November 1921.] 



This article reviews existing knowledge on the citrus black fly, 

 Aleiirocanthus woglumi, Ashby, which occurs throughout Panama 

 as the result of the absence of any quarantine to prevent its intro- 

 duction. After referring to the recent United States quarantine 

 against this Aleurodid, it is suggested that the Canal Zone should 

 adopt the United States plant quarantines and that the Republic of 

 Panama should empower the Canal Zone to extend them to products in 

 transit for Panama through the ports of Cristobal Colon, Balboa and 

 Panama. Meanwhile Panama could establish a less comprehensive 

 quarantine system against products from Costa Rica and Colombia. 



Zetek (J.). La Cuarentena de los EE. UU. contra la Mosca Prieta. 



[The United States Quarantine against the Black Fly.] — Rev. 

 La Salle, Panama, [v,'no. 56] May 1921, pp. 205-208. [Received 

 8th November 1921.] 



This is an account of the recently established United States quaran- 

 tine against Aleurocanthns woglumi, Ashby [R.A.E., A, ix, 357]. 



Zetek (J.). El Comejen. [The Termite.] — Rev. La Salle, Panama,. 

 [v, nos. 57-58] June-July 1921, pp. 237-239, 268-271. [Received 

 8th November 1921.] 



Termites are among the worst insect pests in Panama. This article 

 deals with their habits and describes the measures usually employed 

 against them. Prevention is preferable to remedial methods, and 

 the importance of termite-proof houses and clean cultivation are 

 emphasised. 



