The Cane Grubs of Australia. 2g 
The following table gives a slight idea of relative abundance :— 
Golisétion ; Number of Grubs. 
inal. Source of Collection. : : Average per Yard. 
| Red Volcanic. | Loam. 
| Plough Furrows—Yds. 
Tee es ae 4,375 | re | 11 -00251 
2 Sc 5,760 | ‘a A 00122 
Dos 51 3,645 a 13 -00357 
Ae 3 5.0 1,050 8 ate “00762 
| 
DISTIBUTION AS REGARDS NATURAL HABITAT. 
Known to us only from the neighbourhood of Gordonvale, and 
frequenting the open forest lands and grassfields, more than the cane- 
fields. Of a total number of 136 larvee whose habitat was recorded, 104 
came from forest and grass land, and 32 from canefields. Of course, 
these numbers cannot be given too much consideration, still they seem to 
be about the right proportions. Upland and lowland soils are both 
infested, but our data are not sufficient to give the relative ratios. 
THE PUPA. 
None obtained. 
EMERGENCE (2.e., Adults of ZL. rothet). 
The only dates on which this species has been recorded are—January 
22nd, 1912; December 27th, 1912; and February 13th, 1913; December 
Zot, 1913. 
It breeds in the township of Gordonvale in company with frenchi, 
and the remarks regarding the emergence of that species will refer to 
this also. Specimens have been taken from the foliage of Hucalyptus 
platyphylla and E. corymbosa. At dusk on the 24th December, 1912, 
numbers of this species were observed flying round a clump of young 
trees of the former food-plant growing in the forest. The flight lasted 
for about ten minutes and then suddenly ceased. The shrubs were then 
searched, beetles being found on each tree, all singly, none being noticed 
nating; they were clinging to the edges of the leaves, forcing the beaks 
deep into them. Thirteen specimens (ten males, three females) 
were brought indoors, and enclosed in a wire cage; on last looking at 
them at 10 p.m. they were still feeding. By next morning they were 
hiding under dead leaves on the bottom of the cage, where they remained 
during the day, coming out to feed again at twilight. None mated, 
though they were kept for three days. 
LEPIDIOTA Sp. No. 89. 
THE EGG. 
None obtained. 
THE LARVA. 
Only stage III. has been found, taken at Gordonvale on the 
following dates :—February 15, March 31, April 16, June 23, July 11, 20, 
August 12. 19. Also taken at Mossman March 22, October 31, November 
21; and at Cooktown, February 28 and March 9. 
DISTRIBUTION IN REGARD TO SOILs. 
There is little doubt that this species favours the red voleanic soils, 
almost all our specimens having been taken in that kind of soil, only 
