Notes on the Commoner Species i6r 



are all over the marsh, each heavy rain or extra tide 

 means a fresh batch of larvae. The early brood hatches* 

 in March, the adults beginning to emerge early in 

 April, finishing in May. A second brood is found 

 about June, and breeding thereafter goes on all 

 summer. 



Ochlerotatus taeniorhynchus. — This is also one 

 of the inhabitants of the salt marsh, though not found 

 in such abundance as sollicitans. It breeds in fresh 

 water at Baton Rouge swamp, and occurs along the 

 coast from Louisiana to New York, more abundantly 

 south. By day it often hides in the grass or shrubs, 

 or in swampy woods, and will bite in the daytime 

 during warm weather. Dr. Smith says that it migrates 

 in small numbers, but not so far as do sollicitans and 

 cant at or. 



The adults were taken at Baton Rouge from May 

 25 to September 5. They generally made a single 

 meal, laying one set of eggs, much like those of 

 sollicitans, but one specimen bit four times and laid 

 two batches. They will feed both before and after 

 mating. There are from sixty-one to seventy-one 

 ova in a clutch, which is laid three to six days after 

 biting. They hatch in from one to twenty-two days. 

 The larval stage lasts four to seven days, the pupal 

 twenty-four to thirty-eight hours. The adults lived 

 in captivity twenty-five days, biting the second day 

 after emergence. In habits the larvae are much like 

 sollicitans and cant at or. 



Group III. — Other Swamp Forms 



Culiseta consobrinus. — This species is, in Louisi- 



