40 PROCEEDINGS OF THE NATIONAL MUSEUM. Vo. 62. 
United States Records. 
NEw JERSEY: Delair, June 28 (W. P. Seal). 
District oF CotumBiIA: Washington, September 9, 1901 (J. Kotinsky). 
VIRGINIA: Grassymead, May 24 (H. G. Dyar). 
NortH CAROLINA: Charlotte, May 5, 1915 (H. P. Barret). 
MIssIssippI: Clarksdale, July 31, 1904 (H. S. Barber). 
LOUISIANA: Baton Rogue (J. W. Dupree). 
Texas: Plano, May (E. S. Tucker). 
Brownsville, August 30, 1916 (M. M. High). 
PSOROPHORA (GRABHAMIA) COLUMBIAE Dyar and Knab. 
Janthinosoma teranum Dyar AND Knap, Proc. Biol. Soc. Wash., vol. 19, 
p. 135, 1906. 
Janthinosoma columbiae DyaR AND Knap, Proc. Biol. Soc. Wash., vol. 19, 
p. 135, 1906. 
Janthinosoma columbiae DyaR AND KNar, Proc. Biol. Soc. Wash., vol. 19, 
p. 135, 1906. 
A rather large blackish mosquito. Mesonotum with brown or 
bluish scales, more or less frosted, with irregular reflection, some- 
times forming paired spots. Abdomen black, with paired oblique 
whitish powdery spots at the apices of the segments, spreading and 
diffuse posteriorly. Legs black, the femora with white rings be- 
fore the apex; tibiae spotted with white on the outside; tarsi with 
white rings at the bases of the joints, the first joint also with a 
whitish ring in the middle. Wing scales black, peppered with 
white, forming a black spot at the base of the third vein. Proboscis 
with a whitish ring in the middle. 
The larvae occur in ground pools filled with rain water, and de- 
velop rapidly. The adults are not very troublesome, although they 
are said to bite, but without leaving a severe irritation. 
A number of names were applied to this species, which was also 
considered identical with Psorophora jamaicensis Theobald of the 
Antilles. The present arrangement on the basis of the male geni- 
talia may be found discussed by Dyar." 
Distribution.—Cuba, the Bahamas, Florida, and Texas northward. 
United States Records. 
New Yorx: Cold Spring Harbor, July 17, 1901 (F. E. Lutz). 
NEw JERSEY: Delair, July 10, 1901 (W. P. Seal). 
MaryLAND: Hyattsville, August, 1906 (A. Busck). 
DistTRIcT OF COLUMBIA: Washington, (W. V. Warner). 
VirGINIA: Woodstock, June 6, 1900 (F. C. Pratt). 
WEsT VirciIniA: Kanawha Station, July 20, 1907 (A. D. Hopkins). 
GrorctA: Atlanta, July 4, 1906 (W. B. Summerall). 
NortH Carolina: Greensboro, August, 1901 (F. C. Pratt). 
11 Ins. Ins. Mens., vol. 8, p. 140, 1920. 
