176 INSECUTOR INSCITI^ MENSTRUUS 



leaf-like appendage, straight on one side, with a seta beside 

 it and a seta beyond ; second plate of the unci produced into 

 two arms, neither membranous, the upper long and pointed, 

 the lower bent at a rounded right angle; between these are 

 some six teeth of various sizes ; the long horn-shaped process 

 from the base is flattened and seems to form the third plate 

 rather than a tooth of the second. 



7. Culex (Culex) palus Theobald. 



Culex similis and C. palus Howard, Dyar and Knab, 1. c, iii, 339, 

 342, 1915. 



There seems no doubt that the names similis and palus refer 

 to the same species. Edwards's opinion, quoted by us, may be 

 definitely accepted. 



This species inhabits the West Itidies, covering also most of 

 southern Florida. The larvae inhabit the pools in coral rock, 

 so abundant in the islands and generally any water of a per- 

 manent or semi-permanent nature. They are not found in 

 artificial receptacles. The air tube is very long and slender, 

 the skin of the body covered with little spiculse. The genitalia 

 have the lobe of the side piece with three rods, the marginal 

 one smaller, a leaf -like appendage and a rod-like seta, no sec- 

 ond seta between the rods and the leaf; the second plate of 

 the unci has the outer arm membranous and curved, but small 

 and without teeth, being finely pectinate outwardly ; at the 

 base of this piece the plate forms a rounded angle with a char- 

 acteristic pectination; a long horn arises from the base; inner 

 arm of plate horn-like, and three or four teeth on the margin 

 between the arms, of different sizes. 



8. Culex (Culex) restuans Theobald. 



Culex restuans Howard, Dyar and Knab, 1. c, iii, 333, 1915. 

 This species inhabits the United States east of the Great 

 Plains, extending from Canada to Florida. The larvje inhabit 

 all sorts of collections of water, especially of a somewhat foul 

 character, having been found in rain barrels and old tins. The 

 larva is recognizable from pipiens and qninquefasciatus by the 

 peculiar antennae, which are uniformly shaped and without 

 the "notch" generally characteristic of Culex. The male 



