Genus Janthinosoma. 155 



brown, petiole of first sub-marginal cell from two-fifths to three-fifths 

 as long as that cell, hind cross- vein less than its length from the small ; 

 length, 4 mm. Las Penas and Ionala, Mexico (Dr. A. Duges) and Agricul- 

 tural College (Mississippi) (May 18, Glenn W. Herrick)." 



Note. — Coquillett makes Grabham's johnstonii from Jamaica 

 a synonym of his varipes. I have not seen the description of 

 this species. 



Janthinosoma sayi. nov. nom. 



Janthinosoma musica. Say (1827). (Non 

 Leach) (1825). 



Culex musicus. Say (1827). 



Janthinosoma mexicanas. Blanchard (non 

 Bellardi). 



Culex posticatum. Coquillett (non Wiedemann). 



Joum. Acad. Nat. Sc. Phil. VI., p. 149 (1827), Say; Mono. Culicid. I., 

 p. 255 (1901) ; III., pp. 124 and 126 (1903), Theobald; Handbk. Gnats, 

 p. 276 (1900), and 2nd ed., p. 340 (1902), Giles ; Mosq. N. Jersey, p. 180 

 (1905), Smith; Les Moustiques, p. 234 (1905), Blanchard (mexicanus) ; 

 Class Mosq. N. and M. America, Tech. Se. 11, p. 17 (1906), Coquillett. 



Additional localities. — New Jersey (but not yet found below 

 red shale belt), (Prof. J. B. Smith) ; Arrayollos, Paranaguara, 

 Brazil, in April and May (Dr. Goeldi) ; Augusta Arsenal and 

 Fort Oglesthorpe ; Fort Brown, Texas ; Jackson Barracks and 

 Fort St. Philip, Louisiana ; Fort Logan, Arkansas ; Fort Leaven- 

 worth, Kansas (Miss Ludlow) ; Sao Paulo, Bahia, and generally 

 common in the Brazils (Drs. Lutz and Goeldi) ; Mississippi (Prof. 

 Glenn Herrick). 



Further Observations on habits, etc. — In New Jersey this 

 persistent biter appears at the end of June, through July and 

 August, and a few as late as September. 



The eggs were first observed as previously reported (Yol. III., 

 p. 124, 1903) by Professor Morgan, and much further detail has 

 been added by Dr. Goeldi. 



The larvae occur in woodland pools in New Jersey. The first 

 were taken on June 20th, and adults hatched out on July 2nd 

 and 3rd. Larvae were found again July 15th and many as late 

 as September 30th, pupation beginning on October 1st, adults 

 appearing October 4th. In New Jersey Smith tells us the 

 development is rapid in summer, becoming slower in autumn. 



