Sept., 1905.] Dvar : Brief Notes on Mosquitoes. 107 



D. harrisii. — Labrum nearly truncate in middle ; coxal processes 

 not produced, blunt ; thorax at base, apex and sides broadly bordered 

 with yellow. Females dimorphic. 



Cybister fimbriolatus . — Distinguished by its wedge-like, instead of 

 regularly oval shape and the generic characters. 



Class I, HEXAPODA. 



Order IV, DIPTERA. 



BRIEF NOTES ON MOSQUITOES. 



By Harrison G. Dvar, A.M., Ph.D., 

 Washington, D. C. 



Distribution ok Theobaldia absobrinus Felt. — In reex- 

 amining my series of Theobaldia incidens from British Columbia (Pro. 

 ent. soc. Wash., vi, 38, 1904), I find it to contain a mixture of a 

 second species which I am able to identify with T. absobrinus belt, 

 both by the larvae and male genitalia of the adults. This greatly ex- 

 tends the known distribution of this form which was described from 

 northern New York. 



Identity of Culex consobrinus Desv. — We have examined 

 material collected by Mr. August Busck in St. Louis, Missouri, which 

 Mr. Coquillett considers to be'C consobrinus, and recognize it as C. 

 magnipennis Felt. It is altogether probable that magnipennis is a 

 synonym of consobrinus, as we know of but the one larval form and 

 the male genitalia of Mr. Busck's specimens agree exactly with Dr. 

 Felt's figure. Dr. Felt did not know consobrinus in describing magni- 

 pennis. The species will find place in the genus Theobaldia, or rather 

 Culiseta since Theobaldia is preoccupied by Theobaldius Nevill, as 

 Mr. Cockerell has pointed out to me. 



Exclusion of the name "Culex reptans." — Linnaeus de- 

 scribed a Culex reptons, which is not a mosquito, but, on the principle 

 of " once a synonym, always a synonym " the use of the name is pre- 

 cluded in any other sense. The name " Culex reptans Meig. " must 

 therefore cease to be used. 



Hibernation of the hollow tree species. — Of the two spe- 



