52 THE PLUM CURCULIO. | 
The longest egg period was 11 days 2 hours, the shortest 7 days 18 
hours, the average length of all lots being 9.23 days. These figures 
are in wide contrast to those obtained at Washington in 1905, and 
indeed at all other localities, except for April, at Barnesville, Ga., | 
and the early part of June at Douglas, Mich., in 1910. 
Comprehensive data were obtained by Mr. Hammar during 1910, 
at Douglas, Mich., for June and July, these months averaging some- — 
what cooler than normal. <A total of 944 eggs was observed under | 
out-of-doors conditions, as detailed in Table XVI. 
TaBLeE XVI.—Length of egg stage of the plum curculio, Douglas, Mich., 1910. 
Eggs hatching in specified days from 
Eggs Date deposition. : : 
under of 4 
obser- | deposi- - 
Verona) Hei eiC 1 Call aaah ier sett ees ae eee eke 
ATG) Tne Oui ses sen eee eee Be ec Oe |e 
Sot SUNS ON Be eee ee eee Se 2 |e See 
40 | June 11 ee ia leo) | eee 
22 | une: 12a eee Soar 3 | 19 
52 | June 13 ee LON e405) oz 4 
46 | June 14 eoeel eas |) 10) 
54 | June 15 20 | 30| 4 
28 | June 16 16K 2s Bess | 
27 | June 17 PA Pa he eat ; 
36 | June 18 36 Leafs 
11 | June 19] 34 8). eel | 
50) | June-21 12: )/32 | 4) 2 
SL lumen 22) i> (Gal LS a jase 
30) aeMeR2o 0] LOM 2RIEy Age 
18 | June 24 dW Hata | fia] we SEF Ne 
14 | June 25 Aa LOE | Mees |e 
22 | June 26 CoN ales |e 2 
36 | June 27 28) 7 1 
38 ; June 28} 3 | 24} 11 |. 
33 | June 29} 11 Tee 
37 | June 30 BY (al eel here soe ors 
647 FTO Ge oios see) Snake aro. eet eae oot lef ree eee ore 
r na 
AS || DULL Yi | Sorell ee daa | eee eee 
22 Nitty aoa | kon | aoa see eee 
12 \naly, Ais a ees Pe ae eee 
PAE aie Ny aemmenaye| ome |e atom iret) Serep Be ea e 
1G) ABU GTS el beep LED) | eel 
TRH] Mualiys Tl A Dit ZN et 
TG |) ait “ASSL 1 | Ep 
30| July 9 | ROSH MOM Preece |S 
40 | July 10 aH2Ou E20 Mle |e al So aE Etoile |e ever 
| 10 | July 11 Sil cereal CO Sos laecialeeoeaeer (ener 
TS] dsl: = el Seen IO ees ees | evened | erect | antes eters 
16 | July 14 2 BL Nite se | eh clleea al See eree alae 
14a Oubyets yy Ga esse |e Or ru saat | betel e rota eee 
Si ate livg wivenl ere meee BT Ve Ae bs eee al Ler 
Gal dialyeet See ae soe Sele ss] Sk [Gare SIC abel sata ee 
8 | July 19 Beet ee alo gees aa ae 2a ee 
8 | July 21 Ga eae leeters) ees) bones Beene Sel esse 
8 | July 22 bie eae pees enon Geen tees) Fenc Isarsc 
10 | July 23 By) 6 ise See oe eee |e rere es 
e Di Lye 26) |e esee Bees lisa fees! | ae eae 
ON Fully 28s ie. alee Oa selsr Slade '.o avon eer 
297 Totall..3. 26 J nenss oe eee eae a aseaneee 
Average length of egg: stage for June: 3: 2. = ace- or See ee ati Slee oer ereia ee eee days.. 6.20 
Average iength of ege stapedor Uiliyics5- ee a ee ee ele tele oe late do.... 5.61 
Average length of ege stage for Juneand July. 2 ~~ <6 se eciem ae ele ce omnia niall erent rs do.... 6.02 
