12 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 52. 



STENIOLIA ALBICANTIA, new species. 



Figs. 9, 14, 23, 24, 25. 



IfaZe. — Black: labrum, mandibles except apices, clypeus except a 

 pair of small black basal spots, spot on either side of anterior ocellus, 

 space between antennae, scape and first two flagellar segments below, 

 anterior and posterior orbits, posterior border of pronotum, tubercles 

 and more or less of the sides of the prothorax, spot on tegulae, smaD 

 lateral spots on scutum above base of wing, triangular lateral spots on 

 scutellum, fascia on metanotum, small spot on mesopleurae, spot on 

 metopleurae, large spot on sides of median segment, smaller one near 

 the spiracle of the segment, fascia of first tergite broken into pair of 

 large lateral spots and a pair of dorsal triangular spots on posterior 

 part of tergite, fascia of second similar to that of first, but with the 

 anterior border of the lateral spots prolonged medially and the pair 

 of dorsal spots larger and more elliptical, remaining fasciae similar 

 in design but in most specimens not broken into dorsal and lateral 

 spots, apex of ultimate tergite, continuous fasciae on all sternites 

 emarginate medially, spot on coxae below, stripe on anterior and 

 posterior surfaces of femora, tibiae except spot below on all, and tarsi, 

 pale yellowish or soiled white. 



Length. — 18-21 mm. 



In development the antennae, legs, and genital stipes are quite 

 similar to those of duplicata. Segments 4-11 of the flagellum bear 

 narrow elongate pits on the posterior surface. The second sternite 

 bear a prominent, pointed spine. It differs from duplicata in having 

 the pubescence of the head and thorax somewhat better developed, 

 in being of larger size, in having the mesosternum black, and in the 

 reduction of the markings of the scutum and dorsum of the median 

 segment, which latter is without maculations on the type and on all 

 specimens except one. It is more robust than duplicata, showing a 

 relatively greater width of thorax and abdomen. Furthermore, the 

 maculations, especially the dorsal markings of the abdomen, are in 

 color quite distinct from those of duplicata. In that species the 

 markings are usually a bright clear yellow, whereas in albicantia 

 they are a soiled faded yellow or muddy white. 



Habitat. — Washington and Oregon. 



Number of specimens examined — males 9, females 0. 



Type.— Cat. No. 19802 U.S.N.M. 



STENIOLIA OBLIQUA Cresson. 



Figs. 10, 15, 26, 27, 28, 31. 



Monedula obliqua Cresson, Proc. Ent. Soc. Phila., vol. 4, 1865, p. 469, female. 

 Steniolia obliqua Handlirsch, Sitz. Akad. Wissensch. Wien, vol. 98, 1889, p. 

 511, pi. 1, fig. 16, female and male. 



Male. — Black: Clypeus, labrum, mandibles except tips, scape and 

 first two segments of flagellum below, frons below insertion of anten- 



