APPENDIX. 
AN EARLIER ‘ACCOUNT OF THE LARVA OF ANOPHELES. 
Just as this manuscript was about to be sent to the printer the 
writer’s attention was called to a paper by F. Meinert, entitled ‘‘ Die 
encephale Mygelarver” (Sur les larves encéphales des Diptéres; leurs 
meeurs et leurs Snes K. Danske Videnskabernes Selskabs 
Skrifter (Copenhagen), ii, pp. 373-493, Pls. I-IV (1886), in which, 
among other ee ie gives a brief statement concerning Ano. 
pheles which is sufficiently interesting to translate: . 
“ Anopheles.—In the ‘ Observations @Histoire Naturelle’ of Joblot 
one finds a description of this larva, ‘* Description of a new fish,” 
which is rather insignificant, and a drawing which is not badly done. 
The larva drawn by Brauer as Anopheles is a larva of Dixa, and those 
reported by Fischer d’Waldheim as C. claviger are larvee and nymphs 
of the genus Corethra, while his nymph is a Tanypus, and his fly an 
Anopheles. Aside from this, Gerke has briefly mentioned this larva 
in his paper entitled ‘On the metamorphoses of the dipterous genus 
Dixa,’ page 166. 
“The larva of Anopheles lives in still owilene or in a weak current 
with a rich vegetation, in wooded or unwooded regions. It does not 
like the shade of great trees, but seeks the sun and the light, as is 
indicated by its fresh green color. It does not hibernate, but in mild 
seasons it is found in a half-grown condition by the end of March. In 
July or a little later in the course of a summer the second generation 
of the full-grown larve are found, and in 1882, a year when the spring 
was very forward, the writer found at the end of October small larve 
which certainly belonged to the third generation; but it was not to be 
supposed that these larvee would become full grown, since as they live 
at the surface of the water the first film of ice would kill them. 
‘The larve hold themselves at the surface of the water, where they 
float with the extremity of the abdomen turned toward the bank or 
toward the plants which cover the surface. The larva is stretched out 
in the water with the respiratory tube at the surface. The larger part 
of the abdomen and posterior part of the thorax are submerged, only 
a little portion of the prothorax emerging. The head is under water. 
The long hairs with which the body of the female is provided on the 
sides, on the metathorax, and the first three segments of the abdomen 
are of great assistance to it in maintaining a fixed position. It rests 
often for a long time immovable and only occasionally changes its 
location. Its movements denote a certain apathy or indolence, but at - 
the same time much prudence and apprehension. When it moves it 
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