591 



Calderon (S.). Silk-producing Insects of the Republic of San Salvador : 



Euiachyptem psidii and Rothschildia joruUo. — Rev. Agric. Tropical, 

 San Salvador, i, no. 1, January 1921, pp. 9-14, 4 figs. (Abstract 

 in Internal. Rev. Sci. & Pract. Agric, Rome, xii, no. 12, December 

 1921, pp. 1602-1603.) [Received 3rd October 1922.] 



Aniong the silk-producing moths in San Salvador, Euiachyplera 

 psidii, Salle, found in oak woods, and Rothschildia joridlo, Westw., 

 are capable of attaining a certain economic importance. In his experi- 

 ments the author was unable to breed the latter because all the pupae 

 were parasitised by a Tachinid, Belvosia analis, Macq. 



Brocq Rousseu (— ). The Separation of Sound Beans from those 

 attacked by Bean Weevil {Acanthoscelides ohtectus). — Bull. Soc. 

 sci. d'Hyg'' alimentaiyc ct d' Alimentation rationelle de V Homme, 

 Paris, ix, no. 5, 1921, pp. 332-335. (Abstract in Internal. 

 Rev. Sci. & Pract. Agric, Rome, xii, no. 12, December 1921, 

 pp. 1645-1646.) [Received 3rd October 1922.] 



The proportion of beans infested with Bruchus {Acanthoscelides) 

 ohtectus, Say, varied from 1 to 67 per cent, in samples examined. If 

 the beans are placed in liquids of densities appropriate to the kind 

 of bean under examination, the sound ones will sink and the others 

 float. For a lot of white beans, of which 67 per cent, were infested, 

 the author had to use a 50 per cent, solution of sodium nitrate with a 

 density "of 1-418. The sound beans that have sunk to the bottom 

 can be washed immediately and their value is unaffected. Other 

 beans of lower specific gravity are more easy to treat. For red beans 

 a 25 per cent, solution of sea salt (sp. gr. 1-26) proved suitable. 



A Forest Insectarium in Spain. — Rev. de Monies, Madrid, xlv, no. 1065, 

 1st November 1921, pp. 466-467. (Abstract in Internal. Rev. 

 Sci. & Pract. Agric, Rome, xii, no. 12, December 1921, p. 1651.) 

 [Received 3rd October 1922.] 



The Spanish Forest Fauna Commission has recently opened a forest 

 insectarium for the study of parasites that destroy insects injurious 

 to forest trees. 



De Freitas Machado (L.). Insects injurious to the Cotton Plant, in 



Brazil.— Layoz^ra e Criagao, Rio de Janeiro, vi, no. 8, August 

 1921, p. 189. (Abstract in Internal. Rev. Sci. & Pract. Agric, 

 Rome, xii, no. 12, December 1921 , p. 1652.) [Received 3rd October 

 1922.] 



The following are the insect pests of cotton hitherto recorded in 

 Brazil : — -Lepidoptera : Plalyedra gossypieUa (pinkbollworm) ; Alabama 

 argillacea, Utetheisa ornatrix and U. bella, attacking the leaves ; and 

 Ephestia cazf/^Z/a, destroying the seeds. Coleoptera : Colaspis sp. , injuring 

 the leaves ; Spermophagus hoffmannseggi, destroying the seeds ; and 

 Gasterocercodes gossypii, attacking the plant at the region of the collar. 

 Rhynchota : Saissetia depressa and Hemichionaspis minor, injuring 

 the stem ; Aphis gossypii, injuring the leaves ; and Dysdercus ruficollis, 

 Plociomera (?) sp., Oncopeltus sp., and Gargaphia sp., attacking the 

 bolls. 



