402 Notes 



Experiment 4. The formula of the resin-soda wash was: 

 Soda, caustic ... . . . . . . 3 lbs. 



Kesin . . . . . . . . . . 10 lbs. 



Fish oil f lb. 



Water . . . . . . . . . . 25 gals. 



Experiment 5. The stock solution of lime-sulphur wash was made 

 according to the formula: 



Lime, unslaked . . . . . . . . 20 lbs. 



Sulphur, flowers of . . . . . . 15 lbs. 



Water . . . . . . . . . . 50 gals. 



and this was diluted to 85 gallons. 



Experiment 6. Kerosene-lysol emulsion was made by emulsifying: 

 Lysol . . . . . . . . . . 3 ozs. 



Kerosene . . . . . . . . . . 9 ozs. 



Water . . . . . . . . . . 4 gals. 



Experiment 7. The soft soap-kerosene wash was made by boiling 

 together 8 lbs. of soft soap and 5 gallons of kerosene. On cooling 

 this becomes a jelly, 10 lbs. of which was added to 30 gallons of water 

 for use. 



Experiment 8. For the purpose of comparison eight untreated pods 

 were examined. 



Natural enemies. I have frequently bred the Noctuid, Eublemma 

 costimacula Saalm., of the subfamily Erastriinae, from this scale 

 insect. During the examination of the pods treated with the above- 

 mentioned sprays for dead insects several larvae of this moth parasite 

 were found. 



At a distance I have observed the bird, Melanopteryx nigerrima, 

 picking at a cacao pod infested with this scale insect, but I could not 

 be certain whether it was feeding on the scale insect or on the ants 

 which accompany the scale insect. 



The other local representatives of the genus Stictococcus are the 

 species recently discovered by the writer, St. formicarius Newst., 

 and St. gowdeyi Newst. ^ The former attacks a species of Ficus, and 

 the latter Harrogania madagascarensis and cofEee. 



C. C. GOWDEY, B.Sc, F.E.S., F.Z.S., 



Government Entomologist, Uganda. 



' Newstead, Bulletin of Entomological Research, vol. iv, p. 70, f. 4 (1913). 



