Notes on Insects Damaging Sugar Cane in Queensland. 21 



(14) ATRACTOMORPHA CRENATICEPS, Blancli. (Family ACRIDIIDAE). 



Plate III., Fig. 14, p. 20. 



This curious locust differs from the preceding species in general 

 structure, the elongate head being somewhat flattened horizontally and 

 produced into a point. A row of minute pearly bead-like projections 

 forms a longitudinal ridge on sides of head, starting immediately behind 

 eyes and extending along lower edge of pronotum. In both sexes the 

 tegmina (wing-covers) are of a uniform grass-green colour, closely 

 harmonising with that of various cereals, etc., on which the insect sub- 

 sists ; and the wings clear, with neuration bright pink except on costal 

 margin, where the nervures of apical portion of wing and a narrow 

 strip of membrane close to edge of costa are pale greenish-yellow. When 

 resting on cane leaves it usually remains motionless on the approach of 

 danger, preferring to trust to protective colouration rather than its 

 limited powers of flight. 



The female is about 1^ inches long, with a wing expanse of 2i^ 

 inches, the male being much smaller. 



This common locust attacks young plant and ratoon suckers, and is 

 a well-known cane pest in Java. 



(15) OXYA VELOX, Fab. (Family ACRIDIIDAE). 



Plate III., Fig. 15, p. 20. 



Occasions in.jury to the foliage but is somewhat sparingly distributed 

 and by no means a serious pest. 



The adult female, which is nuich larger than the male, measures 

 11/4 inches in length by nearly 2 inches across the extended tegmina, 

 which are pale brownish-green and broader on basal than central portions, 

 as indicated in photo. (Plate III., Fig. 15). Wings clear. Head, sides 

 of thorax, and femora of legs greenish-yellow; tibia' and tarsi light blue. 

 Antenna' pale pinkish-brown shaded into dark In-own towards tips. The 

 general colouration of this species renders it inconspciuous whilst feeding. 



Like the preceding, it has also been recorded as destructive to sugar- 

 cane in Java. 



(16) CYRTACANTHACRIS ? PROXIMA, Walk. (Family ACRIDIIDAE). 



Met with rather sparingly amoiig cane at Gordonvale, where it is 

 no doulit responsible for minor injuries to the foliage. This grasshopper, 

 which is referred provisionally to genus Cyrtacanthacris, is of moderate 

 size, measuring about 3^/4 inches in expanse, and having light-brown 

 wing-covers marked with four unecjual sized conspicuous reddish-brown 

 blotches on basal and central portions, and a number of nuich smaller 

 rather indistinct fainter markings scattered over apical area. 



Wings very light brownish-yellow. 



