1 5° Mosquitoes 



Time of Hatching. No of Larvae. 



Brought Forward, 41 



August 9, 12:30 P.M. . . I 



" I P.M I 



" " 4 " 1 



" " 5 " 4 



" 5:10 P.M. .... 4 



" * 5^ .... 4 



IO, II A.M. . . . . -4 



3 p-m 3 



Three of the eggs did not hatch. 



Total 63 



In Dr. Berkeley's Laboratory Work on Mosquitoes, 

 Dr. Agramonte gives a number of interesting notes 

 on Stegomyia. He speaks of never having found 

 them in the open fields or in the woods. He notes 

 that the larvae are killed both by cold and drying. 

 The adult, he says, may bite at any time, but does 

 so chiefly in the late afternoon. In Baton Rouge I 

 was troubled most before 9 A. M. in warm weather, 

 and in the evening they were often troublesome be- 

 side a lighted lamp, though they could be escaped 

 by sitting on the upper gallery. They used some- 

 times to attack us on the lower gallery on warm, 

 bright, moonlight nights. In Para, says Dr. Goeldi, 

 people are punctured from fifty to a hundred times 

 a day, the insects being abundant in the houses and 

 hovering in groups of from four to ten over each 

 person — a pleasant state of affairs, indeed. Dr. 

 Agramonte's specimens rarely fed before the fourth 

 day, and oviposited at about this time. They could 



