COLEOPTERA. 535 



The third tribe, Serropalpides, is distinguished bj' the maxillan' palpi being serrated, very hirge, and 

 drooping ; the antennae are inserted in a notch of the eve, often short and fiUform : 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 following; 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.'EA, Fabr. 



Oi-cIicsia,hatr., differs from the rest in having the antenna clavate, the maxillary palpi terminated by a hatchet- 

 shaped joint, and the hind feet are formed for leaping. [O. rnicans, Latr., a minute British species.] 



Eustrophus, lUig. (with the body ovoid, and the airtenns 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. 



Dirccta proper (Xi/lita, Payk.), has the maxillary palpi not sen-ated, the antennae thick, the body oval-shaped, 

 and the scutellum very small. 



Melandiya, Fabr., w ith the maxillary palpi evidently seirated, the thorax depressed at the sides, and the 

 scutellum moderate-sized. [M. carahoides, a common British species.] 



Uypidus, Pk., has the body narrow and nearly linear, with the thorax oblongand 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 

 ]ialpi 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 allied to the preceding in the insertion of the antenna, 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 cylindric 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 Telcphori and Zonites. They are found in flowers or trees ; their metamorphoses 

 are not known. They form a single genus, — 



ffiDEMERA, Oliv 



NotIms,Zt\g\. (Osjo/ij/a, lUig.), hasthe 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. [N. clavipes a 

 very rare insect, found in Huntingdonshire.] 



Rluebus, Fischer, ought probably in a natural system to be placed here. 



Calopus, Fab., has the antennae very long and serrated, the hind legs simple, with the second joint very short. 

 C. serraticornis, [a common continental species]. 



Sparedrus, Megerle, differs from Calopus in having the antennae simple. 



Di/liliis, Fisch., has the antennae also filiform, inserted in front of tlie eyes'; the elytra are not narrowed at the 

 tips. D. helopioidex, [a continental species]. 



CEdemera, Oliv., has the hind legs thickened in one sex, the antennfe long and slender in one sex, and the 

 elytra very much narrowed at the tips. [CEd. coerulea, a very common British insect. Several of tlie species 

 have been separated as distinct subgenera by Stephens.] 



The fifth and last tribe of the Stenelytra, that of the Rhyncostoma, is composed of insects some of 

 which are nearly allied to the CEdemerites, whilst the others appear to belong in a natural order 

 to the family of the Weevils {RhyncopJwra). The head is evidently prolonged in front, in the shape of 

 a muzzle or flattened rostrum, having the antenna; at its base and in front of the eyes, which are al- 

 ways entire. These insects form a single genus 



MVCTERUS, — 



Some of whicli have the antennae filiform, and the muzzle not dilated at the tip. 



Stenostoma,\j^U: {.Leptura, V-Ahr.), has the body narrow, the thorax conical, truncated, the elytra flexible, nar- 

 rowed to a point. (Ed. rostrata, Latr., [South of Europe]. 



Mi/cterus, Clairv., has the body ovoid, solid, silky, [with the elytra entire] ; the antenna; appear to be 12-jointed. 

 [M. i/riseus, a continental species.] 



