248 Journal New York Entomological Society. [Voi. xii. 



with blue-gray. Two hours later (2.50) they were of a gray such as 

 that of the freshly broken surface of cast iron and at 4.20 they were 

 a dark iron gray and had not yet attained their full coloring. 



Upon the same day, at 1.25 p. m., a second mosquito was found 

 ovipositing close by the first egg-cluster. Over one third of the eggs 

 were already laid. The attitude and behavior of this mosquito were 

 much like those of the other one. The hind legs, however, were 

 placed closely along the sides of the egg cluster, while in the other 

 mosquito they had been well apart. It is quite possible that the hind 

 legs are crossed in the beginning to receive the first few eggs, as 

 Reaumur has observed in Ciilex pipiens. The second mosquito con- 

 cluded her egg-laying in 15 minutes and flew suddenly away. The 

 egg-cluster was more elongate and straight-sided than the first one 

 and contained 105 eggs in six rows. The number of eggs in the rows 

 was: 6, 21, 21, 21, 20, 16. 



The day upon which these observations were made was warm and 

 partly cloudy. 



My experience in western Massachusetts has been that, aside from 

 the species frequenting rain-barrels, Culex territans is the only species 

 of Culex breeding continuously and in numbers throughout the sum- 

 mer. It frequents pools in the woods with clear cool water and 

 ditches with a slight current. I have also found a few of the larvEe in 

 a clear mountain spring. The attitude of the larva when at the sur- 

 face is very characteristic and enables one at once to distinguish it 

 from closely related forms. The breathing tube is vertical while the 

 body is horizontal in position. In all other forms that I have seen 

 the body inclines downward at a greater or less angle. 



The eggs of Culex territans have been noted by Dr. Dyar (Science, 

 n. s., xvi, 672, 1902) who says " they are laid in little groups of two 

 or three side by side." It is obvious, however, that he observed only 

 the parts of a cluster that had become broken apart after hatching. 



