41- i"k«)<;hoppi:r iii.i»;HT of slitAR-caxk. 



GEENADA. 



Grenada is about 90 miles North of Trinidad and froghoppers liave 

 only once been recorded as causing serious injury. This was at the end 

 of 1916 (a year exceptionally free from damage in Trinidad). A report on 

 this i.utbreak has already been publislied (Williams 1918 A;. 



The insect was found to be the same as the Trinidad species 

 although previously recorded under a different name by Uhler (189:'5) 

 and thought to be different. 



The outbreak occurred on two estates "Mount Home" and 

 "Xaingainfoix" in the East and centre of the island. The latter was 

 not seen but the former showed most of the typical symptoms of a 

 severe outbreak as seen in Trinidad. One of the fields was in plant 

 canes after 8 years in pasture. Both localities were in the hills at an 

 altitude of three to four hundred feet on a soil composed chiefly of 

 volcanic ash, and all the damaged fields seen were on steep slopes. 



No parasites were seen and the green muscardine fungus was only 

 found on one adult. 



Two or tljree pounds of the usual mixture of green muscardine 

 spores and rice flour were distributed in the fields in the hope of start- 

 ing an infection, and Mr. Berkel^-, the Manager of Mount Home, 

 informed me that a number of dead infected adults were found later on. 



In the following year (1917) Hutsou (1918) reported that there was 

 " no extension of the infected area and the infestation has been less 

 severe than last year." 



In m}- report, (I.e.) the wide distribution of the insect in the island 

 is considered as indicating that it is not a recent introduction. In the 

 collection of the United States National Museum at Washington there 

 are specimens from the following additional localities : — Mt. Gay, 

 Balthazar, and Gx'ande Ance. 



ST. VINCENT. 



There is a single specimen of the Ti-inidad froghopper Tomaspis 

 saccharina in the collection of the British Museum of Natural History 

 at South Kensington, London labelled St. Vincent. It was collected by 

 H. H. Smith about 1890 and recorded bj' mistake by Uhler (1895) as 

 Tomasjns incHyen'iiis, a species originally described from Mexico 

 which is not at present known to exist in the West Indies. 



As it became necessary, for quarantine purposes, to find out if the 

 insect still existed in any numbers in St. Vincent, I visited the island in 

 I'ecember 1917 and spent three days searching suitable localities in the 

 southern half of the island ; but not a single speciraen was found. 



If still present in the island it must be very rare in the parts visited, 

 and special quarantine regulations against the island based on the single 

 specimen at present known would be, in the absence of any further 

 evidence, undue interference with trade. 



BARBADOS. 



No froghopper has ever been found in this island and strict regu- 

 lations have been made to prevent their importation (see p. 50). 

 Local conditions of rainfall, soil, drainage and agriculture, however, 

 make it improbable that the froghopper would ever be a serious pest, 

 <iven if it should be accidentallv introduced. 



