1864.] 
411 
Abdomen subovate, convex above, black, finely and densely punctured, 
sparsely clothed with short pale pubescence; apex incurved; on each 
extreme side of the three basal segments of the abdomen a rather small 
ovate yellowish-white spot; on each side of the fourth segment a trans¬ 
verse yellowish-white stripe rather deeply indented posteriorly , on each 
side of the disk of the fifth segment a transverse yellowish-white spot ’ 
apical segment black, rotundate. Length 2^ lines. 
Hab. —Pennsylvania. One specimen. Coll. Ent. Soc. Phila. 
4. S. elegans, n. sp. 
Female .—Head dark blue, with green refiections, shining, closely 
punctured; face and cheeks densely clothed with long white pubes¬ 
cence, that above the insertion of the antennae and on the vertex mixed 
with fuscous; antennae black. Thorax same color as the head, shin¬ 
ing, closely punctured rather densely clothed with whitish pubescence; 
tegulae greenish-blue, shining, punctured. Wings subhyaline, apical 
margins faintly clouded, nervures black; the second recurrent nervure 
received by the second submarginal cell a little within its apex. Legs 
dark blue, punctured, slightly hairy. Abdomen subovate, convex above, 
dark blue, shining, finely and closely punctured} apex incurved, clothed 
with rather short, erect blackish pubescence; on the middle of each of 
the five basal segments a narrow whitish fascia, interrupted on the disk, 
and having their posterior margins slightly waved; that on the fifth 
segment interrupted on the disk and again on each side, making four 
spots, the extreme lateral ones minute; apical segment immaculate., 
rotundate. Length 3 lines. 
Hah. —Pike’s Peak, Colorado Territory. One specimen. Coll. Ent. 
Soc. Phila. 
An elegant little species. The termination of the second recurrent 
nervure in the wings of this and the preceding species does not accord 
with that mentioned in the generic description given above, and there¬ 
fore they may not belong to this genus. 
