1915} Behavior of Anopheles 2DiL 
bar nets under buildings with negroes as bait. A table of 
recovered mosquitos is inserted here: 
M. Cororep Mosguitos RECOVERED AT GATUN, C. Z. 
Distance 
Date | Place Captured Species Color from 
Breeding 
Jan. 24 EVO Gel INO alls See seeeete ae Walbimanus?.: =. |) "Go Vix || 4,875’ 
ae Q.M. D. Storehouse....| 1 albtmanus....... : 1,500’ 
pre DA: Gentent sheds...) 5,2) a1 : x 2,000’ 
es DA Bock Ghamiberas ees TST aes ects: “ 3,000’ 
ie VLD : RNs a aces aera ts 1 tarsimaculata... . EO. | 3,000’ 
o reve y ee Ml paces, Yap re Ll MORE De eaten all SEL | 3,000’ 
Feb. 1 W. of Locks. ...........| 1 tarstmaculata.... 1D; (Os PATI Oe 
a 5 Wockichamber®4-00. 0) 1 ne ae & 3,000’ 
c 7 . eee Pr eK 1 “ | . 3,000’ 
é a UMN Ker OW eaey tye mers ey eee " ee SK) iI ge ment ed 
x 8 Campi Sonar ae il | te 4,125’ 
e 8 BidgNo 1006.2 4... 1 i 5,000’ 
“ 8 Otel Nome ras. teens 1 ¢ . 4,875/ 
oa alll CamprNosonaneeae = 2 & S 5 BAS 
pare EO telsINovdler 34s. 1 s yee © | 4,875’ 
arom kif a ee sre ata Ren 3 iFculex spon ernc: 4,875’ 
foe LL eiCommissanys,. 5.262) letarsimaculaia... |) (GeV. 4,375’ 
eles BidoeiNo,. DOs ce Wore se 2 “ Pal} eA Os | 4,400’ 
eee eae Col. Sibert’ Stig. eon che oe: 1 albimanus....... e 6,200’ 
OS eet US cai ia) eae a 4 tarsimaculata... . i | 6,200’ 
Pe ainG amppAchton-: 14 2 ra. : | DyLA5L 
eee al Administration Bldg... 1 ¢ Batt ss 4,375' 
earls bem live e nae Cy 4375’ 
Sen Sm ai GampeAct Ole selena oe 2 ‘ oe | Hy 5,125’ 
Total: albimanus 5; iarsimaculata 38; culex sp. 1; indet. 1. 
45 recovered—6 G. V. and 39 Eo. 
Attention is called to the finding of a violet colored mosquito 
on the 11th of February, fourteen days after this stain was last 
used. It is hoped an opportunity may present itself to some 
one to be able to stain no less than twenty thousand mosquitos 
one night, and two weeks or so later to stain a similar quantity, 
using a different stain each time. By careful recovery of 
mosquitos in the townsite and environs, one should get some 
idea as to the longevity of individuals. 
The number of recovered mosquitos is not phenomenally 
large, but it is conclusive proof that the mosquitos seen flying 
from the marsh toward Gatun, actually entered that town. 
About sixty specimens were found which showed a very faint 
tinge of color when the testing solution was applied, but these 
were not considered; only specimens which showed a decided 
color reaction have been incorporated in the table. When 
