100 PROCEEDINGS OF THE NATIONAL MUSEUM. vor. 62. 
MEGARHINUS RUTILA Coquiilett. 
Megarhinus rutila CoquitLetTt, Can. Ent., vol. 28, p. 44, 1896. 
A very large mosquito with bent proboscis, metallic green and yel- 
low. Mesonotum dark brown, with a border of light green scales 
and a line through the center. Abdomen metallic green or blue with 
a broad white stripe along the sides. Palpi of the female three- 
quarters as long as the proboscis, of the male longer, the last joint 
long and acuminate. Legs black with blue reflection, brassy yellow 
neler knee spots white; tarsi of the female on front ad middle legs 
with ee of first sghett and all of second, third, and fourth white, 
hind legs with apex of third, fourth, and all but tip of fifth ee 
in the male, front and middle legs with second joint and basal two- 
thirds of third white, hind legs with fourth and basal two-thirds of 
fifth white. Wings smoky, the scales dark. 
The life history and habits are unknown and the larva is un- 
described. The species is very rare and females very difficult to dis- 
tinguish from the following better known species. 
Distribution—F lorida and extreme south. 
United States Records. 
FiLoripa: Georgiana (W. Wittfeld). 
ALABAMA: Empire, August, 1913 (W. S. Sowell( (female only). 
MississiprPi1: Sibley (A. Fleming) (female only). 
MEGARHINUS SEPTENTRIONALIS Dyar and Knab. 
Megarhinus septentrionalis Dyan and KnaB, Smith. Misc. Colls., Quart. 
Iss., vol. 48, p. 247, 1906. 
Megarhinus herrickii THEOBALD, Entom., vol. 39, p. 241, 1906. 
A very large mosquito with bent proboscis, metallic green and yel- 
low. Mesonotum dark brown, with a border of light green scales 
and a line through the center. Abdomen metallic green or blue with 
a broad white stripe along the sides. Palpi of the female three- 
quarters as long as the proboscis, of the male longer, the last joint 
long and acuminate. Legs black with blue reflection, brassy yellow 
below; knee spots white; tarsi of the female of front and mid legs 
with second and third and all but apex of fourth joints white, hind 
tarsi with extreme apex of third, all of fourth, and all but tip of 
fifth white; in male mid tarsi with second and basal two-thirds of 
the third joint white on outer side, hind legs with fourth joint en- 
tirely white, and base of fifth. Wings smoky brown, the scales black. 
The larvae live in the water in holes in trees and feed exclusively 
upon other mosquito larvae, namely, Aédes triseriatus, Orthopodo- 
myia signifer, and perhaps Anopheles barberi. The females fre- 
