192 PHIL RAU AND NELLIE RAU 
TABLE 8 
Mean temperatures 
1969 1910 1911 
IMamehe ot aes ae 44 58 AT 
PACT Tell Denar eeey ee acai Sear 54 56 54 
INTE G ches Se a ei CO, 64 61 71 
75 | 72 79 
TINT Psy eee ae te te 
Thus the warm March 1910 brought forth the insects at an 
abnormally early date; a warm May and June 1911 was asso- 
ciated with shorter lives of the animals, while for the same period 
in 1910, a slightly longer duration of life was associated with the 
lower temperature. 
It will be seen that none of the animals emerged at an abnor- 
mally early period and that none lived an unusually long number 
of days. The table below gives further details on this lot. 
TABLE 9 
St. Louis Cecropias, 1911 
DAYS 
CLASS Sd = me , a, aris 
Sa a6 | 7 | 8 | 9) | 100) 11) 22) 13} 14 
WW icnrol etic Gnaspacecene ae PaeAcao Mock 1 4 | 3 An) Govan! | 21 eae 
Winmateditoustconss cece a eeere see) One eal kOe Lon ic One 24al neo om eo mere i) 121 } 7273 
Misaite di QUsis oe corde sfatstatcisie alert stanpeeaters Cale elt LO es tee: 1 | 28 | 6.96 
Unmated Qs Foes Seo De aU TSE aL) ey 3 a) we) DN A) SSO 1) e600 
Alllomatediimsects: 2 ey) ase ce ei -ecul V1) Sy 10!) SOs} 5; | 49 | 7.20 
Alllinimmatedhinsectsas see eee see sae 5 | 6 | 21 | 24] 46 | 52] 32] 29] 10|| 4) 4] 1 234 | 7.81 
UN bkopht Shas c a cia etna tite eee Ont tn, = 4| 4/ 12) 16) 26) 28 | 26 | 19 | Dales | 142 | 7.70 
AED is rice aes rapere leceenteecs oe lol ete: = eee 2} 22) } 20))| 13/30), 32)) 15) 155), Sy) 2 | AS 141 real 
6 | 41| 34| 10] 4| i 
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NEW YORK MATERIAL, CECROPIA 1911 
To ascertain just how foreign material would compare with 
St. Louis material, both in time of emergence and duration of 
life, 200 Cecropia cocoons were procured™ from Queens County, 
Long Island, N. Y. These arrived during the latter part of 
March, and between May 15 and June 3, 139 imagines emerged, 
79 males and 60 females. Notes on the duration of life were made 
1 Prom the American Entomological Company, New York. 
