LeConte. | 374. [Feb. 1, 
I am indebted for two specimens. This beautiful species is 
easily recognized by the peculiar coloration. I have referred 
it to Onola Chaud.. because the 4th joint of the tarsi is broad, 
and deeply bilobed, and the claws are pectinate. The teeth 
of the claws are only four in number, and are much larger 
than in the other species. The tarsi are glabrous on the 
upper surface. The last joint of the maxillary palpi is eylin- 
drical, slightly oval, and more than twice as long as the pe- 
nultimate joint; the last joint of the labial palpi is oval, 
pointed and somewhat flattened. Mentum not toothed. It 
is by this last character that it mainly differs from Callida, 
with which it agrees in having two bristles near the tip of 
the ligula. 
3. Platynus fleridanus, n. sp.—Dark-green, shining, siightly 
bronzed, antennie, legs and under surface piceous-black. Prothorax 
scarcely longer than wide, sides broadly rounded, and finely margined ; 
apex emarginate, front angles slightly rounded; base broadly sub-trun- 
cate, oblique towards the side angles, which are obtuse and almost 
rounded ; basal impressions rather long, not punctured ; dorsal line ex- 
tending to the posterior transverse impression, which is faint. Elytra one- 
third wider than the prothorax, emarginate at base, obsoletely sinuate at 
tip; strie fine, but well impressed, not punctured ; interspaces flat, 8d with 
usually 6 small dorsal punctures, the 1st and 2d adjacent to the 8d stria, 3d 
and 5th upon the interspace, 4th and 6th adjacent to the 2d stria. Hind 
tarsi with the 1st, 2d, and 3d joints broadly grooved on the outer side. 
Length 9.6 mm.; .85 inch. 
Capron and Lake Harney, abundant. This species is 
closely related to P. californicus, and differs only by the 
hind angles of the prothorax being much less distinctly de- 
fined; in fact, almost rounded. The size is usually larger, 
so that the smallest individuals of P. floridanus are equal to 
the largest of californicus, but this is a character of small im- 
portance. Closely allied to these two is the following: 
4. Platynus texanus, n. sp.—Less shining, with a green-metallic 
reflection. Antenne black; under part of ist joint, palpi and legs testa- 
ceous ; knees, tarsi and tips of tibia blackish-piceous. Prothorax, as in 
P. floridanus, except that it is a little wider than long. Elytra simi- 
larly striate and punctured, but with the stris a little deeper ; epipleuree 
testaceous, under surface black. Groove of the outer side of the hind tarsi 
on the joints 1-3 deep Length 9-10 mm.; .35-.40 inch. 
