574 PROCEEDINGS OF THE NATIONAL MUSEUM VoL. 113 
particularly in Alaska, may reveal more data concerning variations 
within this species. 
Scoliocentra thoracica Collin 
Scoliocentra thoracica Collin, 1935, p. 381. 
This species was among those reported by Collin from Akpatok 
Island, Ungava Bay, Canada. I have not seen the species, but 
according to the original description, the foretarsi are only slightly 
longer than the foretibiae, and the hind tarsi are shorter than the 
tibiae. This character will apparently serve to distinguish the 
species from S. tincta (Walker) and S. fraterna Loew. 
Genus Anypotacta Czerny 
Anypotacta Czerny, 1924, p. 143. 
Members of this genus have 1 pair of prosternal bristles, the an- 
terior and posterior fronto-orbital bristles are equal in length, and 
the pteropleuron is bare. This combination of characters will dis- 
tinguish Anypotacta from related genera. 
Key to the Species of Anypotacta (Males only) 
Surstylusisingle-lobed 3). 0. Sas... wee Soe) ezernyi Garrett, new species 
Surstylus with two distinct lobes; 2.4... 2... wa aldrichi (Garrett) 
Anypotacta aldrichi (Garrett) 
Figure 70 
Leria aldrichit Garrett, 1921, p. 121. 
Anypotacta aldricht (Garrett), Czerny, 1924, p. 148. 
Matz.—Front reddish yellow; fronto-orbital plates, ocellar tri- 
angle, and vertex ash gray; face and cheeks dirty yellow; antennae 
reddish brown, aristae minutely pubescent; oral vibrissae strong, 
the hairs immediately behind the vibrissae bristlelike, grading into 
the rather long buccal setae; buccal setae in a single row, often 
irregular; cheek-eye ratio 0.35. 
Thorax cinereous, scutellum concolorous with the remainder of the 
thorax; evidence of a brownish median vitta, a lateral vitta through 
each row of dorsocentrals sometimes present; dorsocentrals 1+3; 
prescutellar bristles weak; mesonotum with scattered setae, about 3 to 
5 irregular rows between the dorsocentrals; scutellum bare except for 
2 pairs of lateral bristles; pleura may be somewhat brownish along 
edges of sclerites; propleural bristle present; mesopleuron with a few 
small setae in anterior corner, otherwise bare; sternopleuron with a 
strong bristle in upper hind corner, a few scattered setae near the 
