140 THE CANADIAN ENTOMOLOGIST. 



The first adult emerged August 2nd, a period of 4^ days from the 

 first pupation, and this proved to be very close to the average period. 



The insect was a male, very pretty, and utterly unknown to me ; 

 certainly not a long-billed mosquito. Mr. C. W. Johnson, to whom I 

 submitted a specimen, made it Culicid on venation, but could not 

 identify it with any described form. 



Later Mr. Coquillett pronounced it a new species of Corethra, and, 

 at my request, named it Brakeleyi, the description appearing in a recent 

 number of the Entomological News. 



August 13th, Mr. Brakeley sent me another lot of the larvae, taken at 

 the same place as the last lot, and stated that some very minute examples 

 occurred, evidently babes. 



Other collections were made September 17th, October 14th and 

 October 20th. The latter was made after a heavy frost (min. 21° on the 

 bog close by), and in each case half-grown to full-grown examples were 

 found. No pup?e were found with the larva? at any time, and no adults 

 were collected. 



The life-history is very imperfect : the egg stage is not known, nor 

 the duration of the larval stage. We know that the larva occurs very 

 late in the fall and quite early in spring, and I am inclined to believe that 

 hibernation is in the larval stage ; but I have no proof more positive than 

 I have stated. 



The larva was submitted to Dr. Dyar, who separates it from all other 

 Culicid larva because it has the antennae arising from the dorsal aspect 

 of the head, close together, above the mouth. There is no mouth brush, 

 the eyes are rounded, and the abdominal hairs are unequal. 



The pupa is brown in colour, and floats parallel to the surface, with 

 the long slender air tubes slightly projecting. It is entirely different from 

 that of any other Culicid known to me. 



The adult has mouth-parts similar to those of some Simuliids that I 

 have seen ; but I have not yet studied them closely. 



The larva of this species is not in the least like the descriptions or 

 figures of Corethra heretofore published, nor does it accord in any way 

 with what Theobald says of the early stages of this genus. It agrees 

 much better with Mochlonyx, except for the unusual position of the 

 antennas ; but in the pupal stage it is utterly and completely unlike any 

 other Culicid known to me or described by Theobald. 



Based upon the early stages, Corethra Brakeleyi should form a 

 distinct generic type. 



