70 SMITHSONIAN AIISCELLANEOUS COLLECTIONS VOL. 52 



CULEX GAUDEATOR Dyar and Knab 



\'ery close to and possibly merely a color variety of the preceding 

 species, together with which it was found in a Tillandsia species on a 

 tree near Tabernilla. 



The eggs of this species are very remarkable, quite different from 

 any mosquito-eggs at present known. They are laid in an egg-shaped 

 gelatinous mass about 6 by 10 mm., which suggests a mass of frogs' 

 eggs. The mass contained about twenty-five eggs, each of which is 

 oblong, more pointed at one end and rounded at the other, and each 

 surrounded by its own spherical gelatinous envelope, about 2.5 mm. 

 in diameter. The egg-mass floats at the surface of the water, kept 

 buoyant by small air-bubbles, one near the end of each egg. The 

 gelatinous substance is consumed at least partly by the newly hatched 



larvae. 



CULEX FACTOR Dyar and Knab 



Bred from leaf corners of a Tillandsia species, on a tree overhang- 

 ing the water on the upper Chagres River. It was there associated 

 with the larvae of Wyeomyia macrotus. Also bred from bromelia 

 water near Tabernilla. 



CULEX FUR Dyar and Knab 



The type of this species is in the U. S. National Museum and came 

 from Colon, Panama (A. C. H. Russell, collector). I did not find 

 the species. 



CULEX (CARROLLIA) IRIDESCENS Lutz 



This pretty, easily recognized little mosquito was bred on several 

 occasions in large numbers from my bamboo traps in the neighbor- 

 hood of Tabernilla. The species was not hitherto represented in the 

 collection of the U. S. National Museum. 



Subfamily SabETHIN.i; 



Genus SABATHES Desvoidy 



SABETHES UNDOSUS Coquillett 



A common species bred in large numbers from bamboo at Taber- 

 nilla, Lion Hill, and Gatun. The larva has a long air-tube and hangs 

 perpendicularly from the surface of the water when at rest. 



Adults of this species were also collected as they came to bite in 

 the bamboo woods. 



