282 [FEBRUARY 
terior angles, which are slightly acute. The punctures are very indistinct, the 
transverse scratches are as fine as in C. californicus. 
7. C.terminans, oblongo-ovalis, minus convexus, nigro-piceus, subtiliter 
pubescens, elytris distinctius - rugose punctulatis, stria suturali profunda, thorace 
breviore, antrorsum valde angustato, angulis posticis vix productis; pedibus 
fuscis, antennis apice flavis, basi testaceis. Long. +12. 
Le Conte, Agassiz’ Lake Superior, 218. 
Very abundant at the mouth of the Pic River, on the north side of Lake 
Superior, under dried animal matter. This species is broader and less convex 
than the preceding, and is easily known by the more distinct punctuation, and 
by the absence of the transverse lines. ‘he thorax is densely and finely punc- 
tulate, it is about twice as wide as its length, strongly narrowed. in. front, 
rounded on the sides, especially anteriorly, slightly emarginate at apex, trun- 
cate at base, and very slightly sinuate at the posterior angles, which are scarcely 
pereeptibly acute. The anterior tarsi of the male, and the first joint of the 
middle tarsi, are dilated. 
By a misprint, the length in the description ced from Agassiz’? Lake Supe- 
rior, 1s: made +15 instead ‘Of « 12% 
8. C. oblitus, subellipticus minus convexus, rufo-fuscus, pubescens, 
thorace punctulato antrorsum subangustato, basi truncato, angulis posticis fere 
obtusis, elytris transversim minus dense strigosis, stria suturali distineta, an- 
tennis flavis art. 4—10 fuscis. Long. -07—-08. 
Three specimens, Georgia. Hasily distinguished by its sub-elliptical and less 
convex form. I cannot discover any punctures on the elytra; if they exist, 
they are concealed by the dense pubescence, which is, however, scarcely seri- 
ceous. The male has three joints of the anterior tarsi dilated; the middle 
tarsi are simple in both sexes. 
9. C. parasitus, breviter ovatus, piceo-rufus, sericeus, thorace disco ob- 
scuriore, brevi, antrorsum valde angustato, angulis posticis non productis, 
elytris transversim strigosis, stria suturali profunda, antennis basi apiceque 
flavis. Long. :08. 
New York, in ants’ nests, with Hetezrius brunnipennis, March and April. 
This species is much broader and more suddenly narrowed posteriorly than the 
others. The thorax is fully twice as wide as its length, punctulate, not strigose, 
strongly narrowed in front, broadly rounded on the sides, truncate at base, with 
the posterior angles simply. rectangular and not produced. The elytra are 
punctulate and distinctly striate transversely. The antenne are as long as the 
héad and thorax, very slightly incrassated, rufo-piceous, with the ‘first 4 joints 
and the apical one yellowish; the 7th joint is more .than twice the size of the 
6th; the 8th joint is much shorter, but scarcely thinner than the following ones. 
The anterior tarsi of the male are broadly dilated; the first joint of the middle 
tarsi is less dilated than in C. terminans. 
The following species are unknown to me: 
C. basillaris Say, Journ. Acad. Nat. Sc. 8, 194, Missouri. 
C. cadaverinus Man. Bull. Mose. 1843,254. Sitka. 
Choleva (Catops) Spenciana Kirby, Fauna Bor. Am. 108. 
Coton Herbst. 
Mylechus Latr. 
1. C.dentatus, fuseus, oblongus, fulvo- -sericeus, valde punctulatus, tho- 
race latitudine vix breviore, antrorsum magis angustato, angulis posticis vix 
rotundatis, elytris stria suturali postice profundiore, antennarum clava magna 
picea, pedibus rufo-piceis, femoribus posticis dente acuto armatis. Long. -09. 
This, the first species of the genus found on this continent, was discovered by 
the Rev. D. Ziegler, at York, Pennsylvania. The characters above given will 
at once distinguish it from any European species. The thorax is scarcely wider 
than long , strongly narrowed in front, broadly rounded on the sides, truncate at 
