70 



A species of wild grape grows commonly in the woods, and 

 furnishes food for the larvae of the grape leaffolder, Desmia 

 funeralis. The adults were common in July. The species causes 

 more or less damage to cultivated grapes in various parts of the 

 country. 



The southern corn leaf beetle, Myochrous denticollis, is a 

 common insect at Cameron. This species has been reported as 

 injuring corn in Tensas parish, Louisiana, and in other States. 

 After a freshet which flooded some low grass land near the Sta- 

 tion building the beetles crawled upon the grass and weeds that 

 protruded above water in large numbers. In this case the insect 

 must have depended upon grass entirely for food for there was 

 no corn at hand for it to feed upon. 



The region in the vicinity of the Station is well suited for 

 stock raising and a great many cattle and horses are raised; 

 therefore the insects that interfere with these interests in any 

 -way are of consequence. 



The horn fly, Haematobia serrata, and the screw worm fly, 

 Chrysomyia macellaria, are plentiful and the former is a pest 

 v.'hich does much injury to cattle. It may be repelled by spray- 

 ii.g animals with a mixture made of three gallons of kerosene, 

 one quart of pine tar and one pint of carbolic acid. Many of 

 the specimens that are on the animals at the time they are being 

 s^-rayed are killed. A single spraying is of short duration and 

 for that reason the mixture is not as popular as it would be if 

 it lasted longer. 



The Ilippelates flies of two or more species are plentiful. 

 They are exceedingly small but their size does not hinder them 

 from doing much injury. They do not appear to fly at night 

 but they were observed around cattle and horses very early in 

 the morning and continuously during the remainder of the day. 

 Ilippelates flavipes is charged with facilitating the spread of 

 the disease known as pinkeye. 



Several species of horseflies have been taken at Cameron, 

 but three of these are usually more plentiful than the others, 

 and are so near in size and coloration that they are often taken 

 fcr the same. They have been figured and enlarged views of 



