TfiE StJGAR-CANE FROGHOPPEF. IN GRENADA. 87 



I took with me to Grenada two or three pounds of artificially prepared spores 

 of the Green Muscardine Fungus mixed with rice flour, kindly given to me by the 

 Usine St. Madeleine, Trinidad, from one of their recently opened culture cabinets. 

 As the fungus was so rare naturally in Grenada, this mixture was spread over the 

 damaged fields in the hope of infecting the froghoppers. The greater part of the 

 material was distributed in Field 2. The spores were distributed at first by beating 

 the bag containing the powder while carrying it through the canes. As, however, 

 the field was exposed to a strong trade wind, and as also the supply of spores was 

 limited, a number of stools were infected by shaking the powder from a small tube 

 down into the axils of the upper leaves where the adults were congregated. This 

 was much less wasteful of material, but was naturally a more expensive method and 

 could not be recommended on a large scale. 



I had to leave Grenada before any visible results could be expected from this 

 treatment, but I was later informed by Mr. Berkeley, the Manager of Mount Home, 

 that a number of dead infected hoppers were found. 



In 1917, I was also informed, the froghoppers appeared again in both fields but 

 not to the same extent as in 1916. 



Tomaspis saccharina was found at the following localities in the Island (see map). 



St. George : — Belmont, on grass among cane ; Morne Rouge, on cane ; St. George 

 Lower Road, on grass ; Woodlands, on cane ; Calvini, on cane. 



St. Davids : — Main Road one mile North of Bailey's Bacolet, on grass ; La Sagess, 

 on grass. 



St. Andrews : — Menere, on grass ; Simon, on grass ; St. Andrews Harbour, on 

 grass ; Lower Simon, on cane ; Mount Home, on cane ; Nainganfoix, on cane. 



St. Patrick. 



St. Mark and St. John were not visited, but there is no doubt that it occurs 

 there also. 



