OF WASHINGTON. 49 



The larvae of the above four species of Culex resemble each 

 other in general structure. They differ in several minor char 

 acters. Pip lens and territans agree in having a long, slender 

 breathing tube, that of territans being especially long, and in 

 the position of the antennal tuft, well developed at the outer third 

 of the joint. They differ in the broad head of territans with the 

 antennae distinctly banded with white and the narrower head of pi- 

 piens with pale luteous or infuscated, unbanded antennae. Sollici- 

 tans and cantans agree in the shorter conical or fusiform breath 

 ing tube, the antennae blackish at the outer half, with the tuft at 

 the middle of the joint, often weak or invisible. They do not 

 sensibly differ; certainly not in any readily appreciable character 

 that I have been able to find. All the larvae from the Ama- 

 gansett marsh had very short anal finger-shaped processes, while 

 those from Bellport had them moderately long, but both colonies 

 were mixed. Anyway, the length of the anal fingers is not a 

 specific character. 



The habits appear to be correctly expressed as follows : 



Living in cold springs or lakes territans. 



Living in small confined bodies of rain water pipiens. 



Living in fresh water grassy marshes cantans. 



Living in saltwater grassy marshes sollicitans. 



Uranotccnia sapphirina O.-S. 



The larvae occurred rather commonly in a warm pool filled 

 with green algae (Spirogyra) along with Anopheles. A few 

 were found in the cold lake, as above noted. The little larvse 

 remain mostly at the surface, not being easily disturbed. They 

 float flatly, though below the surface film, and were several times 

 mistaken for the Anopheles with which they occurred. The 

 head is elongate and blackish brown, the hairs of the first two 

 abdominal segments are long, the rest short and stellate. Alto 

 gether the larva presents a good generic type, quite distinct from 

 both Culex and Anopheles. The little adults caused no trouble 

 and were not seen flying. I give a more complete description 

 of this form in another place. (Jour. N. Y. Ent. Soc., ix, 179, 

 1902.) 



Prof. Smith records this species as having been bred from the 

 pitcher plant (Ent. News, xii, 189, 1901), but he informs me by 

 letter that the published statement is an error and that he has not 

 bred sapphirina. 



I exhibit, for comparison with the foregoing, drawings of 

 Psorophora ciliata Fab., made from Dr. Howard's specimens 

 which were loaned to me by Mr. Kotinsky, Aedes smithii Coq., 

 from pitcher plant larvae obligingly sent to me by Prof. Smith, 

 after whom the species was named, Stegomvia fasciata Fab., 

 from larvae which I owe to the kindness of Dr. W. C. Reed, of 

 the Army Medical Museum, and Culex; confinis Lynch, which I 



