24 SCIENCE BULLETIN, No. 19. 



Genus LI I. Ourococcus, Fuller. 



Trans. Ent. Soc, London, p. 452, 1899. 



This genus was formed for three West Australian coccids, living in creyices 

 in the bark of trees and producing a single long glassy tail from between the 

 pair of anal tubercles. Abdomen tapering to the extremity; antennae 

 aborted, rudimentary ; legs aborted or absent. 



The species are described from West Australia ; Cockerell, in his paper 

 in the Canadian Naturalist, entitled the " Determination of the Genera of 

 Coccidae," 1899, proposes to place these insects in his group Conchaspinae, 

 coming after Gallipappus, but in Mrs. Fernald's catalogue they are placed 

 after the Sphaerococcus. 



Ourococcus cobbi, Fuller. 

 Journal Bureau Agriculture, West Australia, p. 1346, 1897. . 

 Trans. Ent. Soc, London, p. 453, 1899. 



Adult female found on crevices of the bark of an undetermined species of 

 Eucalyptus. Abdomen rounded, furnished with long glassy tail ; West 

 Australia. 



385. Ourococcus cobhi. Cat. Coccidse, p. 88. 



Ourococcus eucalypti, Fuller. 



Journal Bureau Agriculture, West Australia, p. 1346, 1897. 

 Trans. Ent. Soc, London, p. 452, 1899. 



Adult female with similar habits and food plant to 0. cobbi, producing a 

 long glassy tail, but with the abdomen tapering to the extremity and ter- 

 minating in two incurved points ; West Australia. 



386. Ourococcus eucalypti. Cat. Coccidse, p. 88. 



Ourococcus casuarina', Fuller. 

 Journal Bureau Agriculture, West Australia, p. 1346, 1897. 

 Trans. Ent. Soc, London, p. 453, 1899. 



The adult female in the bracts of the Casuarina branchlets ; forming 

 similar tails, but the tip of the abdomen tapering, and ending in two strong 

 tuberciiles. 



384. Ourococcus casuarinae. Cat. Coccidae, p. 88. 



