324 



Popp. ?) ; the Chrysomelid beetles, Nisotra theobromac, Lab., and 

 Lymidus variicolor, Berl. ; the Coleopterous borers, Mallodon downesi, 

 Hope, and Apate monacha, L. ; and termites. 



The most se\-ere borer injury was due to a Lepidopterous larva 

 generally believed to be Zeiizera coffeae, Nietn. Though the larvae 

 of this moth may attack the trunks, in the author's breeding experi- 

 ments a female of the Megalopygid, Eulophonotus myrmeleon, Feld.. 

 was obtained. Infested branches must be burned, or the galleries 

 may be closed with a plug soaked in carbon bisulphide. Only one 

 adult was bred, the larvae being parasitised by a fly thought to be a 

 Tachinid. which is probably the factor that keeps do\\Ti this pest. 



The insect pests of cacao in Africa that were not found in San Thome 

 are reviewed. 



After reference to cultural and other work in connection with the 

 plantations, the pests of plants other than cacao are noticed, Orydes 

 latecavatus, Fairm., being the chief enemy of coconut. 



The final section deals with the preparation of insecticides and 

 fungicides. 



Maheux (G.) . Les Insectes dans nos Serres. — Scientific Agric. Garden- 

 vale. Quebec, ii, no. 8, April 1922, pp.- 265-267. 

 A brief account is given of the more important pests of green- 

 houses, including Tortrix {Archips) rosaceana, Pseudococcus spp.. 

 Coccus hesperiditm, Hemichionaspis aspidistrae. Macrosiphum sanborni 

 and Tarsonemus pallidus. Regular fumigation is advocated as a 

 means of preventing the estabUshment of any of these pests. 



Williams (R. O.). Cacao Cultivation in Grenada. — Bull. Dept. 

 Agric. Trinidad & Tobago. Port-of-Spain, xix, pt. 4, 1922, pp. 

 215-223. 

 The most widely distributed and most virulent pest of cacao in 

 Grenada is the thrips [Heliothrips rubrocinctus, Giard], for which the 

 remedies are improved cultivation and nicotine sulphate sprays [R.A.E., 

 A, vi, 496; \ai, 5301. Mealy-bugs [Ps<?//rfococcMS spp.] are frequently 

 troublesome, especially in combination with the black ant [Cremasto- 

 gaster brevispinosa var. miniitior]. Crude oil emulsion has proved 

 the best remedv, but must be applied when the trees are not in flower, 

 as the strength used (1 gal. to 1 lb. soap in 10 gals, of water) injured 

 those blooms that came into contact with it. A large termite, Calo- 

 iermes balloui, enters trees through old wounds and causes great 

 destruction. All wounds caused by pruning, etc., should be treated 

 at once with an antiseptic, crude oil having proved the best for the 

 purpose. 



Plant Diseases and "Pests.— Bull. Dept. Agric. Trinidad & Tobago, 

 Port-of-Spain, xix, pt. 4. 1922, pp. 169-187, 11 figs. 

 The text of the Plant Protection Ordinance, no. 29 of 1919, for 

 the prevention and eradication of diseases and pests affecting vegetation , 

 is given verbatim. This repeals the previous ordinances, and under 

 its terms Proclamation no. 56 of 1921 is issued declaring certain pests 

 and diseases to be regarded as coming within the meaning of the 

 ordinance. The pests enumerated are Brassolis sophorae (coconut 

 butterfly), the parasol ant, the cacao beetle, locusts, Rhynchophorus 

 palmarum (gru-gru beetle) and Strategus aloeus (rhinoceros beetle). 



