224 Journal New York Entomological Society, [vol. xiv 



Culex melanurus Dyar, Proc. ent. soc. Wash., v, 143, 1903. 

 Culex melanurus Dyar, Science, n. s., xvi, 672, 1902. 

 Culex melanurus Felt, Bull. 79, X. Y. Sta. Mus., 337, 1904. 

 Melanoconion melanurus Dyar, Journ. X T . Y. ent. soc. xiii, 28, 1905. 

 Culex melanurus Smith, N. J. Agr. exp. Sta., Rep. Mosq., 322, 1905. 



Occurs in the northern Atlantic States ; we have it from New Hamp- 

 shire, New York and New Jersey. The fully grown larva hiber- 

 nates, which is the only known instance of such a habit. 



Mochlostyrax erraticus, new species. Fig. 61. 



The larva resembles that of Culex salinarius. The skin is 

 densely covered with minute spieulae, making it appear pilose. The 

 air tube is long and straight, about six times as long as wide, has the 

 pecten small, running to the basal third, followed by five moderate 

 tufts on the posterior edge and two very short dorsal ones. The lat- 

 eral comb of the eighth segment has the spines in a rather irregular 

 row, not in the normal perfectly straight line, yet not doubled. We 

 have the species from Dr. Dupree, Baton Rouge, Louisiana. It was 

 identified as "Melanconion atratus Theoh." by Mr. Coquillett, but of 

 course erroneously. 



Mochlostyrax pilosus, new species. Fig. 62. 



The upper epistomal hair is double, the lower single, the anteanten- 

 nal tuft of four. Air tube straight along the front side, curved be- 

 hind, the pecten not reaching one-half, composed of long spines; 

 eight hair tufts on the posterior edge, the two within the pecten very 

 long, the others shorter. Comb of the eighth segment of 15 thorn- 

 shaped scales in a curved row. 



The specimens were collected by the junior author in Santa Lucre- 

 cia, Mexico, in cattle tracks filled with water in the edge of a swamp. 

 They have the habit of lying on the back at the bottom. The adults 

 were named "Melanoconion atratus Theob." by Mr. Coquillett. 



Mochlostyrax caudelli, new species. Fig. 63. 



The upper epistomal tuft has three hairs, lower three, the small 

 tuft below eight hairs, the anteantennal tuft five hairs. Air tube 

 straight or slightly concave before, curved behind, with a pair of 

 hooks at the tip. Pecten very long, not reaching half way along the 

 tube; seven tufts on the posterior edge, the two within the pecten 



