59 The Cane Grubs of Australia. 
THE LARVA. 
DEVELOPMENT OF STAGES. 
The stages have been recorded at Gordonvale on the following 
dates :— 
Stage I. Stage IT. Stage III. 
July 8 April 13 June 16, 30 
June 16, 30 July 7, 23, 28 
July 8, 28 August 15, 17, 23 
August 15, 17, 22, 25 September 5, 10 
October 
November 25, 26 (indoors) 
From this scanty data it cannot be determined how long the life- 
eycle lasts. It will, however, probably be found to be longer than one 
vear, since Stage If. larve in August cannot be expected to conclude 
the life-cycle by the end of the year. The larve have been found in 
almost pure sand in the bed of the Mulgrave River, but not elsewhere. 
MELE WPI Ac 
No pupe have been obtained, though pupating larvee have been taken 
from our cages on November 25 and December 18. 
THE ADULT. 
The adult of this species is net connected with the larva. It possibly 
is Horonotus optatus Sharp, a species which has been reared from cages 
containing supposed larve of No. 576 only. 
ANOPLOGNATHUS BOISDUVALI Boisd. 
THE EGG. 
LENGTH OF STAGE. 
Lot Number. pa ria pi Date Deposited. | Date Hatched. | papers tae 
1 60 11-15 December .. | 22-29 December .. | 7-18 
2 23 16-22 December .. | By 2 January | 11-17 
3 6 _ 1-6 January .. | 15-18 January 40 9-17 
4 44 | 20-30 December .. | By 14 January (larve 15-25 
| several days old) 
5 63 | 20-30 December .. | By 14 January x 15-25 
Excluding the last two records, which are not exact enough, we 
obtain an average of 13-16 days; including the last two records the 
average is 15-9 days. The length of the stage is probably between the 
two averages, namely 14-53 days. 
DURATION OF PERIOD OF OVIPOSITION. 
Eggs have been obtained from November 3 to January 6. 
MANNER OF DEPOSITION. 
In confinement, eges are laid single or in clusters of from two to six. 
None have been obtained out of doors. 
