( S3 ) 
3. punctatostriatum, Say, Trans. Amer. Philos. Soc- 
The posterior angles of the thorax are very acute ; the basal 
and anterior margins are slightly longitudinally wrinkled, 
the dorsal line transversely wrinkled on its margins, and the 
basal lines are obliquely wrinkled ; the sides of the thorax 
are also somewhat undulatedly wrinkled. The third inter- 
stitial space is much wider than the others, and the posteri- 
or puncture is much nearer to the anterior puncture than to 
the tip. 
4. E. Icemgatum, Say, Trans. Amer. Philos. Soc. The 
basal thoracic lines are much dilated. 
5. B. coxendix, Say, Journ. Acad. Kat. Sc. 3, 151. An- 
tennse with the three basal joints and base of the fourth pale 
yellowish ; palpi (in the dry state) pale yellowish, dusky 
at tip : face with an impressed line each side : vertex lon- 
gitudinally wrinkled : thorax with the posterior margin a 
little depressed ; surface somewhat wrinkled transversely 
and at base longitudinally ; basal indentations dilated, mi- 
nutely rugose : elytra with the anterior and posterior discs 
obscurely testaceous. — I am not so fortunate as to possess 
definitions of the several genera into which this genus, as 
originally constructed by Latreille, has been recenlly divi- 
ded ; but I ratht^r think, by analogy, that the present spe- 
cies is a Feryphiis, Meg. 
6. E. dorsalis^ Say. Trans. Amer. Philos. Soc. This 
species varies considerably. The dorsal line is more or 
less obvious, and sometimes rather deeply impressed. In 
one specimen is a slight appearance of puncturing on the 
middle of the thoracic base. The thorax is more or less 
engraved with undulated lines, which are sometioies almost 
imperceptible. Perhaps a Notaplius, Meg. 
7. E. tefracolum, Say, Trans. Amer. Philos. Soc. Al- 
lied most closely to Peryphus rupestris, Iliig. than which it 
is somewhat larger. 
8. B. postremum^ Blackish ; elytra brownish, obscure 
yellowish at tip. 
Inliab. Pemisylvania. 
Head gveenhli black; /ace with an indented line each 
side, between which and the eye is a large orbicular punc- 
ture: anternm piceous at base: palpi dark honey 
yellow: mandibles at base piceous : bronze black, 
very obscurely piceous on the middle of the anterior margin; 
contracted behind ; posterior angles obtuse-angular ; dorsal 
