COLEOPTERA. 
535 
The third tribe, Serropalpidesy is distinguished by the maxillary palpi being serrated, very large, and 
drooping ; the antennae are inserted in a notch of the eye, often short and filiform ; the mandibles are 
generally bifid at the tip, and the tarsal ungues simple ; the front of the head is not produced, and the hind 
thighs are not thickened, in which they differ from the foUowing; the penultimate joint of the tarsi, of the 
four fore-feet at least, is bilobed, and in those in which it is entire, the hind feet are fitted for leaping, 
being long, compressed, with slender tarsi. This tribe has for its type the genus— 
Dirc^a, Fabr. 
OrchesiaMtY., differs from the rest in having the antennae clavate, the maxillary palpi terminated by a hatchet- 
shaped joint, and the hind feet are formed for leaping. [O. micansy Latr., a minute British species.] 
Eustrophus, Illig. (with the body ovoid, and the antennae shorter than the thorax), and 
Hallomenus, Payk. (with the body elongate oval, and the antennae longer than the thorax), have the palpi but 
slightly thickened at the tip. The remainder have the body narrow and elongated, with the maxillary palpi hat- 
chet-shaped, and some of these have the antennae thick and short. 
Dirccea proper {Xylita, Payk.), has the maxillary palpi not serrated, the antennae thick, the body oval-shaped 
and the scutellum very small. ^ * 
I Melandryay Fabr., with the maxillary palpi evidently serrated, the thorax depressed at the sides, and the 
scutellum moderate-sized. \_M. caraboides, a common British species.] 
Hypulus, Pk., has the body narrow and nearly linear, with the thorax oblong and narrow behind. D. quercinus 
[a very rare British species]. ’ 
Serropalpus, Hellw., has the antennae slender, subcylindric, the body of a firm consistence, and the maxillary 
palpi strongly serrated. ' 
Serropalpus, Gyll., differs from the last in having the body soft, the maxillary palpi scarcely serrated and the 
penultimate joint of the tarsi bilobed. [Two very rare British species.] * 
The fourth tribe, (Edemerites, is nearly aJKed to the preceding in the insertion of the antennte, bifid 
mandibles, bilobed penultimate joint of the tarsi, and securiform maxillary palpi ; but (with the excep- 
tion of Nothus, which, although nearly allied to some of the preceding, differs in having the hind 
femora thickened) exhibits a series of characters which does not allow them to be confounded with 
any other Heteromera. The body is long, narrow, nearly linear, with the head and thorax rather nar- 
rower than the elytra ; the antennae are longer than these parts of the body, serrated in some, but 
composed of long cyHndric joints in the others ; the anterior extremity of the head is more or less 
produced into a short muzzle, with the eyes more prominent ; the thorax is at least as long as broad, 
nearly square or cylindrical ; the elytra are linear, narrowed behind, and often flexible. These insects 
are related to the Telephori and Zonites. They are found in flowers or trees ; their metamorphoses 
are not known. They form a single genus,— 
CEdemera, OIiv, 
Nothus, Zeigl. {Osphyay Illig.), has the antennae short, simple, and inserted in a notch in the eyes • the hind thighs 
thickened in one sex, the thorax as broad as the base of the abdomen, and the tarsal claws bifid ’ m ^ 
very rare insect, found in Huntingdonshire.] * ^ ^ 
RJuebusy Fischer, ought probably in a natural system to be placed here. 
CaZopus, Fab., has the antennae very long and serrated, the hindlegs simple, with the second joint very short 
C. serraticornisy [a common continental species]. * ^ 
Sparedrus, Megerle, differs from Calopus in haying the antennae simple. 
Dytilus, Fisch., has the antennae also fiUform, inserted in front of the eyes ; the elytra are not narrowed at the 
tips. D. helopioidesy [a continental species], 
(Edemeray Oliy., has the hind legs thickened in one sex, the antenn* long and slender in one sex and the 
elytra yery much narrowed at the tips. [CEd. coerulea, a yery common British insect. Seyeral of the species 
haye been separated as distinct subgenera by Stephens.] ^ 
The fifth and last tribe of the Stenelytra, that of the Rhyncostomuy is composed of insects some of 
which are nearly allied to the (Edemerites, whilst the others appear to belong in a natural order 
to the family of the Weevils {Rhyncophora). The head is evidently prolonged in front, in the shape of 
a muzzle or flattened rostrum, having the antennae at its base and in front of the eyes, which are al- 
ways entire. These insects form a single genus 
Mycterus,— ■ 
Some of which have the antennae filiform, and the muzzle not dilated at the tip. 
Stenostomay Latr. (Leptura, Fabr.), has the body narrow, the thorax conical, truncated, the elytra flexible nar- 
rowed to a point. (Ed, rostratay Latr., [South of Europe], ’ 
Mycterusy Clairv., has the body ovoid, solid, silky, [with the elytra entire] ; the antenn* appear to be 12-jointed. 
\M. griseus, a continental species.] 
