1925 ] 
A New Species of the Genus Gaurax 
47 
A NEW SPECIES OF THE GENUS GAURAX. 
By Charles W. Johnson. 
Boston Society of Natural History. 
Gaurax dorri sp. nov. 
Upper part of front, vertex, and occiput dull black, with 
short black hairs, lower part of front and orbits yellow, face 
whitish, oral margin above black, cheeks with a narrow black 
line which extends as a faint brownish line to the base of the 
antennae, the latter yellow, the margin of the third joint and 
arista dark brown. Thorax and pleura black, shining, with two 
small yellow spots near the base of the scutellum, the latter 
yellow, the disc slightly darkened. Abdomen black, shining, 
the middle of the first segment and venter yellow, in the female 
the first segment is entirely yellow. Front coxae black, middle 
and hind coxae yellow, femora black, with bases and apices 
yellow, front and middle tibiae and tarsi yellow, posterior tibiae 
black, first and second joints of the posterior tarsi yellow, the 
others black. Halteres yellow. Wings hyaline. Length 2 mm. 
Holotype and allotype, Great Pond, Mt. Desert, Maine, 
June 27, 1922 (C. W. Johnson). In the collection of the Boston 
Society of Natural History. The species is dedicated to Mr. 
George B. Dorr, Director of the Lafayette National Park, who 
has greatly aided in the work on the insect fauna of Mt. Desert. 
