26th July 
29th July 
ord August 
10th August 
21st August 
29th August 
7th September 
18th Se ptember 
28th September 
6th October 
20th October 
31st October 
The Genus Hylastes, Er. 151 
(a) Eggs and larvee. 
(>) Still feeding. 
(a) Larval galleries on two stems interfered with by larval 
tunnels of P. pine. 
(6) Young adults feeding. 
(a) Larvee—some well grown. 
(5) Young adults feeding. 
(a) Do. 
(0) Do. 
(a) Larve well grown. 
(6) Feeding. 
(a) Larvee well grown. » 
(b) Young adults pairing 
(a) Adults have left roots ; larvee pupating. 
(b) Young adults cutting brood-galleries. 
(a) Some old adults feeding ; others dead. No more larve 
pupated. 
(b) 3 eggs in gallery of young adults. 
(a) Old adults feeding. Larvee and pupex dried up by 
exposure of galleries. 
(0) Eggs in young adults’ galleries. 
(a) Old adults feeding ; more dead. 
(b) Eges and larvee. 
(a) Do. 
(D) Do. 
(a) Do. 
(6) Larvee. 
Tabular Summary of Laboratory Observations on H, palivatus. 
As will be observed, these observations extend only over the six months 
May to October 1916. Owing to the heating of the laboratory during the 
winter, difficulty was experienced in keeping pine stems or logs suitably 
moist for the breeding or rearing of H. pailliatus, which prefers thin-barked 
material. 
Year | Jan. 
| | | | | at | | 
Feb. | Mar. April | May | June | July | Aug. Sept. | Oct. | Nov. | Dec. 
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| | 
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