The Cane Grubs of Australia. 
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Gs 
PERCENTAGE OF LARVa HATCHED. 
When obtained in confinement, the eggs were placed in fine, sifted, 
damp earth, in glass vessels, at a dept of an inch or two. The following 
table shows the percentage of mortality :— 
Lot Number. Number of Eggs Placed in Vessel. Larve Hatched. 
MM 
1 ae 44 | 20 
0) saa - 63 18 
3 O0 30 6 | 4 
4 OO oie 55 31 
5 20 ole 23 21 
——_—_ | — 
191 | 94 
= 49.215 per cent. reared. 
THE LARVA. 
DEVELOPMENT. 
The stages have been found on the following dates at Gordonvale :— 
Stage I. | Stage IT. Stage ITT. 
November 22 (reared) | March 16, 18, 23, 24, | Mareh lie 132 18s 25" 24096: 
December 23, 29 (reared) | April Tis MMOs MGs UG. eee Ae 28 
January 2, 15, 18 (reared) | May 8, 6, 12 April 7, 10, 14, 15, 16, 19, 22 
March 26 June 1, 5, 15, 30 | May 2, 6, 8, 11, 13, 15, 18, 21, 
April 8, 17, 18 July 1, 6, 8, 11, 21, 31 28 
August 3, 4, 7, 12, 22 | June 1, 4, 7, 15, he 24, 26, 30 
October 10, 27 (in cages) | July 1, 6, 8, 1 5, 20 
November 6 (in cages) August 3, 5, 7, ata 21, 27 
September : 2 
October 7 
December 24 
October 6, 24, 27, 31 
November 7, 12, 20, 26 
December 6, 8, 17, 29 
January 6 
———$——— 
‘In confine- 
ment 
Also, Stage I. at Normanby, near Cooktown, N.Q., 5th February, 
at Babinda 27th January; Stage II. at Normanby 5th February, at 
Babinda, N.Q., 25th August, at Mossman, N.Q., 19th March, at Murwil- 
lumbah, Tweed River, and Harwood, Clarence River, N.S.W., May; 
Stage III. at Normanby, N.Q., 5th F ebruary, at Mossman, N. Q., 23rd 
March, at Childers, S.Q., Ist July, at Murwillumbah, Tweed River, and 
Harwood, Clarence River, N.S.W., May; at Babinda, N.Q., 27th January. 
From these data it is obvious that the species has a life-cycle of more 
than one year. Thus Stage II. larve confined on 21st April were still 
in Stage IT. on 11th November and similar records. These larve could 
not pass through Stage IIT., pupate and emerge, the same season or 
hardly so. 
