289 



Tlie author has frequently bred the Noctuid moth, Euhlemma costi- 

 macula, Saahn. (Erastriinae) from S. dimorphus. Other Uganda 

 representatives of the genus Stidococcus are formicarius, Newst., and 

 gowdeyi, Newst. ; the former attacks Ficus sp., and the latter 

 Harrogania niadagascarensis and coffee. 



[The Uganda and West African representatives of Stictococcus 

 dimorphus have recently been separated specifically by Prof. Silvestri 

 from the typical East African form under the name of S. diversiseta, 

 Silv.— Ed.] 



Tryon (H.). Onion white blast. — Queensland Agric. JL, Brisbane, iii, 

 no. 1, January 1915, pp. 27-28. 



The so-called blight or " white blast " affecting the onion crop in 

 the Memerambi district is due to an, as yet, undetermined species of 

 thrips. The use of a nicotine spray is advised : 1 lb. of tobacco in 

 2 gallons of water diluted to 4 gallons, adding a little soap or molasses 

 to promote adhesion. Sprays containing white oil soap and kerosene 

 emulsion have been advocated and may be used, but both are liable 

 to do injury, especially if not well made or if applied when the light 

 is strong. 



Jarvis (E.). Beetle borers of sugar-cane. — Queensland Agric, JL, 

 Brisbane, iii, no. 1, January 1915, pp. 32-33. 



Crgptorrhynchus sp. and Rhabdocnemis sp. have been found at 

 Macnade in two varieties of sugar-cane. The inj ury done by the former 

 is somewhat similar to that caused by Rhabdocnemis obscurus, but the 

 tuimels seldom exceed 4 inches in length, are very irregular in width, 

 and may entirely encompass an affected internode, thus destroying 

 most of the internal portion. The larva does not construct a cocoon, 

 but pupates at the end of its tunnel in an egg-shaped chamber, one 

 end of which consists of debris tightly compacted, the whole interior 

 being smoothed and rounded. The other weevil inflicts injury very 

 similar to that caused by R. obscurus. 



Ehrhorn (E. M.). Division of Entomology. — Hawaiian Forester and 

 Agric, Honolulu, xii, no. 1, January 1915, pp. 13-16. 



During November 1914, the pests intercepted were : Balaninus sp. 

 (chestnut weevil), infestmg a package of chestnuts from Kentucky, 

 and Bruchus sp., in forest seeds from Ceylon ; both packages 

 were fumigated with carbon bisulphide before delivery. Two large 

 boxes of ornamental plants arrived from Japan and were fumigated 

 and all soil removed from the roots of the plants. In this soil were 

 iound the larvae and pupae of a small weevil said to be injurious to 

 pot plants in Japan ; some larvae of an Anomala beetle Avere found, 

 also one larva of Serica japonica, all these being injurious to the roots 

 of various plants. Durmg the month, 15,775 parasites were liberated. 

 For fruit fly, {Ceratitis capitata) : 1,250 Opius humilis, 700 Galesus 

 silvestrii, and 1,0.50 Tetrastichus gijfardi. For horn-fly, stable-fly and 

 house-fly : 5.500 Philippine Spakingia, 2,600 Muscidifurax vorax, 

 4,000 Phihppine Pteroraalids and 675 Dirhinus giffardii. 



Appended is a report by D. T. Fullaway Avho during November 

 1914 amongst other parasites bred 2,450 Tetrastichus giffardi from 

 1,967 pupae. 



(ClGl) B 



