231 



The summary of the Hfe history is as follows : 

 Egg period 3 to 6 days. 

 Larval period 15 to 28 days. 

 Pupal period 3 to 9 days. 

 Egg to maturity 21 to 43 days. 

 HAB. Malayan Islands; Queensland, New South Wales, 

 Australia ; Tasmania ; Balade, New Caledonia. 



Vcraiiia liiicola, Fabr.* (PI. XV, fig. 11.) 



This species was collected in Queensland and New South 

 Wales, Aus., by Messrs. Perkins and Koebele. Several ship- 

 ments of it were received at the Experiment Station during 

 1904. Some were liberated directly on Oahu Plantation. In 

 a shipment received October 4, only one pair were alive, and 

 they were retained for breeding. Their progeny were liberat- 

 ed on Oahu Plantation, and the plantation of Hawaiian Agricul- 

 tural Co., Pahala, Hawaii, before they had increased to large 

 numbers. 



It is primarily an Aphis feeder, but ate young leaf-hoppers in 

 confinement, and no doubt would do so in the cane-fields when 

 Aphids were not readily obtainable. In Australia, they were 

 found feeding on Aphis in grass and cane-fields. 



In size this species is about 4 mm. long by 3 mm. wide. It 

 is of a dull yellow color with four black spots on prothorax, 2 

 near the middle and two larger at the posterior margin, and 3 

 longitudinal black lines on the elytra, i. e., one formed by the 

 black margin of the elytra, w'here they come together in the 

 median line, and a black line near the middle of each elytron, 

 nearer the outer margin and nearly concentric with it, some- 

 times terminating without reaching the margin; when it does 

 reach the margin, it is at the inner margin a little distance from 

 the apex. 



Life History. 



Eggs are yellow, laid on end, in clusters of 6 to 17, on under 

 surface of leaves or other sheltered places; clusters deposited at 

 intervals of 2 to 5 days. 



Eggs hatch in 3 to 6 days. 



Larvae full grown in 13 to 31 days. 



Pupal period 4 to 8 days. 



Eggs to maturity 20 to 45 days. 



* Crotch, Cocciuellidae, p. 170; Froggatt, Agric. Gaz. N. S. W., XIII., p. 901. 



