22 Mr. G. R. Waterhouse on Coleopterous Insects 
divisions of the great Feronian group; possessing the essential 
characters of Feronia, they have the general form and aspect of 
the species of Calathus: so like indeed is one of the species to 
Calathus cistelloides, that I could scarcely doubt its belonging to 
the same genus, and was somewhat surprised to find the claws of 
the tarsi destitute of the usual denticulations. The dilated tarsi 
of the males have the joints triangular, as in Feronia. 
Family Harpaip2. 
Selenophorus (?) galapagoensis. Sel. piceus, marginibus thoracis ely- 
trorumque rufescentibus ; antennis, palpis, pedibusque ferrugineis ; 
thorace transverso-quadrato, postice paululum angustiore, angulis 
posticis obtusis, foveis duabus postice obsolete impresso ; elytris 
striatis, striis 2°, 52 et 7* punctis remotis, indistinctis, impressis ; 
interstitiis levibus.—Long. corp. 43 lin.; lat. 13 lin. 
But one specimen of this species was brought home by Mr. 
Darwin, and that being a female, I cannot feel certain that it be- 
longs to the genus Se/enophorus ; it agrees in general aspect with 
the species of that genus, and in having no tooth in the emargi- 
nation of the mentum. : 
Amblygnathus (?) obscuricornis. Ambl. niger subobscurus ; antennis 
fuscis, articulis basalibus nigris apicibus piceis, palpis rufescentibus, 
tarsis piceo-rufis ; thorace transverso, subquadrato, postice paulo 
angustiore, supra convexo, angulis posticis rotundatis ;_ elytris 
subparallelis, convexis, striatis, striis 2*, 5 et 74 punctis remotis 
obsolete impressis, interstitiis convexis.—Long. corp. 42 lin. 
This insect like the last is a female, there bemg but one spe- 
cimen in Mr. Darwin’s collection ; it is almost destitute of any 
gloss, and has a slight silky appearance. In general aspect it 
greatly resembles a Cratognathus, having the same convex form 
of body ; the mandibles however are obtuse at the apex, the 
labrum much less narrow in the antero-posterior direction, the 
head smaller, and the anterior tibize less dilated. Both im this 
and the preceding insect there are three or four short spines on 
the outer side of the anterior tibize. 
The thorax has the ordinary two impressions behind, but)they 
are extremely indistinct: the elytra are distinctly striated ; and 
the striz are impunctate, if we except the second, fifth and seventh 
from the suture, in each of which are a few punctures which are 
widely separated and by no means distinct: at the apex of the 
elytron, near the outer margin, is a series of five or six tolerably 
distinct and large punctures ; the interspaces between the striz 
are rather strongly convex on the hinder part of the elytra, and 
but shghtly convex on the anterior part. 
I am not acquainted with Dejean’s genus Amblygnathus, ex- 
cept through his description, and with that the present insect 
