182 CORYMBITES. 
7. Corvusites NusiLus. Crassiusculus,  niger, cinereo-pubes- 
cens, thorace non transverso, lateribus rotundatis, subtilissime 
punctulato, angulis posticis testaceis, elytris lurido testaceis, macu- 
lis5 pone basin (una communi) rotundatis, alteraque utrinque pone 
medium lunata, nigricantibus, tenuiter striatis, interstitiis [ere 
Planis punctulatis, antennis pedibusque nigris. — Long. 5” 5. 
Lec. loc. cit. p. 438, 8. 
One specimen, collected in California by M. Child, and given me 
by M. Rathvon. The markingsare on the same plan as those of the 
preceding species, but they are not dilated along the suture, 
and the anterior is broken up so as to form a roundet spot each side 
behind the humerus, and a larger less distinct one at the suture. 
The finer punctuation of the thorax, and the black feet, will enable 
it to be readily recognised. 
8. CORYMBITES UMBRIPENNIS. Elongatus, linearis, vix pallide pu- 
bescens, niger; fronte subconcava, thorace latitudine longiore, an- 
trorsum vix angustalo, tateribus paulo rotundatis, minus dense 
punctato, postice canaliculato, elytris parallelis, striis punctatis, 
interstitiis disperse punctulatis, testaceis pone basin et ad medium 
infuscatis. — Long. 5” 4. 
Lec. Rep. ofexæplor. and surv. from Mississip. to the Pacif.oc. IX, Ins. E, p. 4. 
Cor. nubilipennis. Esusp. Am. phil. Soc. Trans. X, p. 441. 
One specimen from Oregon, Col. MCall. The posterior angles of 
the thorax are long' and acute; the third joint of the antennæ is 
equal in length to the fourth, but is not at all dilated. The last joint 
is wanting, so that we cannot be certain that it belongs to this divi- 
sion (1); its general appearance, however, prevents it from being 
placed in any other. The front is slightly concave, not showing the 
quadrate outline which may be perceived in the others of this 
group. 
9. Corvusires mauRus. Ater, minus nitidus, tenuissime fusco-pubes- 
(1) Voyez la classification des Corymbites, de M. Le Conte, aux généralités du 
genre. (p. 80). 
