406 
INSBCTA. 
The following species is placed by Count Dejean among his 
T achy pi. 
B.Jlavipes; Panz. Faun. Insect. Germ. XX, 2; Cicindela 
Jiavipes, L. Very similar to the Elaphrus riparius; two lines in 
length ; thorax rather narrower than the head, cordiform, trun- 
cated, and as long as it is Avide; eyes large; the body blackish- 
green above, bronzed beneath and mottled with cupreous-red; 
two large impressed puncta on each elytron near the suture ; 
base of the antennae, palpi and legs yellowish. V ery common in 
the environs of Paris * *. 
Trechus, Clairv. 
The last joint of the exterior palpi, from its thickest part to its 
origin, as long as the preceding or longer, so that the two united 
make a fusiform body f . 
The Pentamerous Aquatic Carnivora form a third tribe, that of 
the Hydrocanthari, Lat. The feet of these Insects are fitted for 
natation ; the four last are compressed, ciliated or laminiform, and 
the two last at a distance from the others; the mandibles are almost 
Certain species, whose thorax, although narrowed near the posterior angles, is 
less than in the others, so that the posterior rtiargin is scarcely narrower than the 
anterior, compose the genus Notaphiis, Dej. and Megerle. 
Among those in which the thorax is considerably narrowed behind, its length 
is sometimes only a little greater than its width, and it has the form of a truncated 
heart : such are the Peryphus of these naturalists. Sometimes much shorter in 
proportion, its form approaches that of a cup or of a heart with a very hroad base ; 
in some it is even rounded at the posterior angles. They form the genus Leja of 
the same. The Tachypi, on account of the extraordinary protuberance of their 
eyes, and other relations to the Elaphri, are sufficiently distinct ; but such is far 
from being the case with the other genera ; it is impossible to mark them by rigor- 
ous characters. Those which might be drawn from the respective and comparative 
length of the second and third joint of the antennae, appear to me to be also uncer- 
tain. See the Catal. de la Coll, des Coleop., of Dejean. 
* Add Carabtts tricolor, Fab.; — C. modestus ; — cursor; — higuitatus ; — i-guttaius; 
■ — guttula, Id.; — C. miniittis, Panz. Faun. Insect. Germ. XXXVIII, 10; — C. 
pygnmus, Fab.; — Panz. Ib. 11 ; — C. articulatus, Panz. Ib. XXX, 21 ; — Cicindela 
quudrimaculafa, L; — Carabus pulchellus, Panz. Ib. XXXVIII, 8; XL, 5 ; — C. doris, 
Panz. Ib. 9 ; — Ela^Jlirus rvpestris, Fab. ; Panz. Ib. XL, 6 ; — C. decorus, Panz. Ib. 
LXXIII, 4 ; — C. uslulaius, L. ; — Panz. Ib. XL, 7, 9 ; — C. bipunciatus, L. ; Oliv. 
Col. Ill, 35, xiv, 163; — Elaphrus rvficollis, Panz. Ib. XXXVIII, 21; — Elaphrus 
impressus, Fab.; Panz. Ib. XL, 8 ; — Elaphrus paludosus, Ib. XX, 4. 
Trechus rubens, Clairv., Entom. Helv., II, ii, B, b. The Carabus meridianus, 
which he figures in the same plate. A, a, is a Stenolophus . — Carabus micros, Panz., 
Faun. Insect. Germ. XL, 4. — The genus Masokeus of Ziegler and Dejean appears 
to me to approach that of Trechus. The species on which it is founded is closely 
allied to the II arpalus collar is of Gyllenhal. The maxillary palpi, as in Trechus, have 
a fusiform termination, the penultimate joint merely being a little shorter than the 
last. The anterior tarsi are slightly dilated in the males. This Insect seems to 
connect Trechus with various small species of the Stenolophus of Dejean. 
Ihe Blemi of these same savans are a kind of naiTower and more elongated 
Trechi with a subisometrical thorax, in the form of a reversed and truncated trian- 
gle, with much larger mandibles that project beyond the labrum. They are found 
along the sea-coast of France, under stones, and even in the sea. 
