sears fea 
among the 1930 tests and 100 traps of it distributed uniformly over the 
S57-acre area this season captured 47 per cent more moths per trap than 
the average of the other 115 baits tested there. The fact that this 
bait was used throughout the 42,000-trap area where the moth catch per 
acre was half as much but the worm entrances in fruit twice as numerous 
seems to prove that a mixture of different baits makes for zreater effi- 
ciency." 
Mr. Steiner states that estimates of the costs of bait trapogae 
"including interest and depreciation indicate that baiting could be prac— 
ticed by individual growers in this vicinity for 7 1/4 cents per tree 
or $8.00 per acre for a six-month period if one trap is operated in 
every second tree and the work is conducted on a 400—acre basis." 
James Zetek, Panama Canal Zone, submits additional data on pupa-— 
tion of Anastrepha striata Schin. Using 50 larvae in each case, one 
set kept in light pupated the same dey; the other, kept in total dark- 
ness, distributed pupation over three days, beginning on the first day. 
The first test was in petri dishes and was without earth or water. ° 
These tests were repeated with a small amount of water added, all of 
the larvae mature and from the same source. "Those in the light behaved 
aS follows: At 11.50 a.m. November 16, test started; at 5.00 pum 
larvae had pupated; on November 17, 29 puparia: on November 18, 3 pu- 
paria; on November 19, 4 puparia; on November 20. 1 puparium; on Novem— 
ber 23, 1 puparium and 12 dead larvae. One of the larvae pupated on 
under side of upper dish. Those in the dark behaved as follows: At 
11.50 a.m. on November 16, test started: at 5.00 p.m. no larvae had 
pupated; on November 17, 5 puparia; on November 18, 4 puparia; on No- 
vember 19, 5S puparia; on November 20, 5 puparia and 31 dead larvae. 
Additional tests were made with mature larvae of striata by submerging 
them in water for various periods." Results showed that submergence for 
5 to 48 hours results in dead pupae and that submergence for 25 to 68 
hcurs is fatal to larvae. 
A. C. Mason, of the Mediterranean fruit fly project at Honolulu, T. 
H., reports on the hibernation of Diachasma tryoni Cam.: "A collection 
of parasitized fruit fly larvae which pupated on August 22 was taken 
up to an elevation of 1,800 feet and held. They produced 139 D. tryoni 
adults between September 10 and 28, 1 on November 2, and one on Noven-— 
ber 4. The last two had hibernated more than six weeks after the major— 
ity of the parasites emerged. A similar collection of pupae (formed also 
on August 22) produced 172 D. tryoni between September 6 and 24, at the 
1,000-—-feet elevation. After being carried down to the laboratory on 
October 19, the remaining unemerged pupae produced 4 adult D. tryorms 
between October 22 and November 9." 
A study of the longevity of adult fruit flies is also reported 
by Mr. Mason: "In order to determine the relation of temperature to lon— 
gevity of the adults, cages containing 60 freshly emerged adults were 
placed at each of the three elevations under observation. They were 
