120 Trans. Acad. Sci. of St. Louis. 
northern Asia and Europe; it descends along the mountains 
in America as far south as Colorado. It is not at all closely 
related to Lathrotaxis, which follows, although classified 
under the same head in the table on account of the form of 
the gular sutures, but, as before stated, belongs with Lathro- 
tropis and H'ulathrobium. The fewspecies thus far brought to 
light within our territories may be briefly described as fol- 
lows: — 
Body broader and stouter, the prothorax but slightly elongate; pale rufo- 
testaceous throughout, the antennae and abdomen dusky; head large, 
fully as wide as long, parallel and nearly straight at the sides, the 
base broadly arcuato-truncate, the angles moderately broadly rounded; 
eyes moderate, the punctures rather small and close-set, sparse on the 
vertex; antennae but little longer than the head and prothorax, rather 
slender, the medial joints decidedly longer than the subapical and fully 
twice as long as wide; prothorax distinctly narrower than the head, 
widest anteriorly, the sides distinctly converging to the base and 
nearly straight, a fourth or fifth longer than wide, the anterior angles 
moderately broadly rounded, the punctures rather small but deep, 
irregular, close-set near the subelevated median line, the latter nar- 
rowly impressed behind the middle for a short distance; elytra slightly 
elongate, as wide as the head, subparallel with the sides feebly arcuate, 
scarcely longer than the prothorax and about a fourth wider, coarsely, 
very closely and sublinearly punctate; abdomen parallel, about as wide 
as the elytra, finely, closely punctate. Male with ventrals two to five 
strongly, not very broadly impressed along the median line throughout, 
the fifth with a broadly rounded shallow sinus as wide as the attend- 
antimpression; sixth broadly impressed throughout in median third in 
continuation of the preceding impressions, the apex with a narrower 
and abruptly formed sinus nearly as deep as wide and widely rounded 
at the bottom; impression anteriorly with a large patch of short 
black spiculiform hairs narrowly divided along the middle; female 
unknown. Length 7.0 mm.; widthl.l mm. Washington State (Thurs- 
TON CO.) coccseccccscccccceccccccvcscvccs sees cocevessesfRCOMAe ND. Sp. 
Body narrow and slender, the prothorax narrow and notably elongate; 
medial joints of the antennae about equal in length to the subapical and 
much less than twice as LONG AS Wide....e-cceee- see S88 *Feeceeerere Z 
2— Sides of the prothorax feebly converging from apex to base, broadly 
and almost evenly arcuate throughout; dark fusco-testaceous, the 
elytra flavo-testaceous, gradually blackish-piceous in basal half; ab- 
domen piceous-black, the legs dark ferruginous, the antennae dusky, 
longer than the head and prothorax, rather stout, feebly incrassate dis- 
tally; head rather longer than wide, parallel and broadly arcuate at the 
sides, the base broadly arcuato-truncate, somewhat wider than the ely- 
tra, with the basal angles moderately broadly rounded, the punctures 
rather fine but deep and close-set toward the sides and base; prothorax 
much narrower than the head, a third longer than wide, the apical angles 
