40 
U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY-47TH PARALLEL. 
Serica McLeay. 
S. anthracina, ovata, nigra fere opaca, cyaneo-micans, clypeo punctato, valde margfnato, 
lateribus fere parallelis, ad apicem late emarginato, thorace brevi confertim punctato, antrorsum 
valde angustato, lateribus rotundatis, elytris striatis, punctatis, ad apicem late truncatis. 
Long. - 25—‘35. 
Oregon, Dr. Townsend and Col. McCall ; San Francisco, Mr. Child; Sacramento, Mr. 
Wittick. The small specimen is reddish brown, but is perhaps immature. 
Camptorhina Kirby. 
C. serotina, oblonga, obscure ferruginea, capite punctato, margine reflexo, antico late biemar- 
ginato ; thorace suhtiliter punctato, linea dorsali fere laevi, convexo, lateribus valde rotundato, 
elytris leviter sulcatis, sulcis confertim punctatis, interstitiis punctis paucis notatis, pygidio 
confertim punctato. Long. - 42. 
One specimen, Sacramento, collected by Mr. Wittick. Of the size and form of C. vespertina 
Lee. (Serica vespertina Schonh. Camptorhina atricapilla Kirby ,) but with the thorax finely 
punctured, and the elytra less sulcate and less coarsely punctured. 
IIoplia Illiger. 
K. irrorata, oblonga, nigra, squamulis griseis setisque intermixtis vestita, clypeo antice 
truncato, thorace antrorsum angustato, lateribus valde rotundato pygidio abdomineque densius 
squamosis, tibiis anticis bidentatis, tarsis anterioribus unguiculis fissis, interiore duplo breviore. 
Long. *28. 
Oregon, Dr. Townsend ; California, Mr. Child. The antennae are 9-jointed. The elytra are 
sometimes reddish brown. 
Pleocoma Lee. 1 
P. jimbriata, latiuscula, ovalis, parum convexa, nigra, nitida supra glabra, capite inter cornua 
excavato laevi, occipite subtiliter rugose punctato, thorace latitudine fere triplo breviore, an¬ 
trorsum valde angustato, lateribus rotundatis, parce punctulato, antice modice declivi, elytris 
stria suturali, alterisque 8 per paria approximatis punctatis parum distinctis, interstitiis sat 
dense punctatis; ad marginem et subtus, dense et longe flavo-villosa. Long. 1.05. Tab. I, 
fig. 13, (antenna 13a.) 
Mas capite antice in capite furcato protenso, vertice breviter cornuto. Lee. Proc. Acad. Nat. 
Sc. 8. 
Antennae (maris) 11-articulatae, articulo 3io elongato, 4to intus, ad basin producto, 6-11 laminatis, clavam kepta- 
phyllam formantibus. Maxillae et mandibulae invisae, minutae. 
On the eve of my departure from the country, perfect specimens of this most curious genus have arrived, but do not, in 
the hasty manner in which I am obliged to study them, throw much light upon its affinities. Although agreeing with 
Geotrupidae in the eleven-jointed antennae, the form of the antennae is entirely anomalous in that and allied groups, and 
the small size of the oral organs would seem to indicate a new group between Geotrupidae and Copridae. 
These specimens are much smaller than the other one, being only .8 of an inch long. The figure is made from the one 
first obtained, but the antennae are supplied from the smaller specimens, those of the former being very imperfect, though 
still sufficiently preserved to be correctly described in the text, having only four long leaves, and one short one in the 
club. These differences may be sexual, at least no adequate specific difference on comparison, unless it be in the thorax, 
which, in the large specimen, is very finely and sparsely punctured, while in the small ones it is quite densely punctured 
and clothed sparsely with long hairs like those on the margin. 
