Genus Theobaldia. 
275 
£. Much as female; antennae give banded appearance 
verticels light brown ; palpi as long or longer than proboscis,, 
dark brown, with a light band at base of apical joint, plumes 
brown except at the light band, where they are yellowish; very 
marked contraction at the distal end of the second abdominal 
segment, giving a ‘wasp waist’ effect; legs as in female, but 
the bands distinct and fairly wide, especially on the hind legs,, 
where there is a narrow band on the third tarsal; in the fore 
and mid legs this joint has only a suggestion of a band ; fourth 
joint brown ; ungues large, unequal in fore and mid legs, the 
larger biserrate and the smaller uniserrate, in hind legs large, 
simple and equal. 
Length. —10-11 mm. 
Habitat. —Fort Egbert, Alaska. Taken May-June. 
Type.—Ho. 9959, U.S.N.M. 
Described from five 9’s and one $ sent by 1st Lieut. J. R. 
Bosley, Asst. Surg. U.S. Army, in two collections from Fort 
Egbert, Alaska. 
It is closely related to both annulata , Shrank, Ficalbii, ISToe, 
and penetrans, Desvoidy. Differs from the former in that it has 
only the tiny spot on the thorax ; there is no band on the female 
palpus, and only one on the male ; there is no ring on the femur, and 
the leg bands are much narrower and ochraceous rather than white. 
It differs from Falbiei also in the thoracic markings; the 
palpi have only white scales ; the median stripe on the second 
abdominal segment; the tarsal bands are basal only, and the 
mid ungues of the male have only one tooth on the smaller. It 
apparently reverses the colouring of penetrans, and has only four 
‘ maculis plus minusve distinctis.’ 
It is possibly not out of place to state here that the speci¬ 
mens from San Francisco, Cal., which otherwise agree well with 
Theobald’s description of T. annulata, Shrank, lack the mid band 
on the metatarsi, and that three, and sometimes even four, tarsal 
joints are minutely banded.” 
Theobaldia incidens. Thomson (1868). 
Culex incidens. Thomson (1868). 
Culex particeps. Adams (1903). 
Eugen. Resa. Dipt., 443 (1868), Thomson; Mono. Culicid. III., 151 (1903) ; 
IV., 279 (1907), Theobald. 
United States ; British Columbia. 
