COLEOPTERA. g^ 



and elongated joint. The posterior legs are very stout in one of the 

 sexes, with one stout tooth and two small spurs beneath, near the 

 inner extremity of^ their tibiae. The head is not prolonged ante- 

 riorly * 



In a nateral order this would perhaps be the place for the Rhcebus 

 of M. Fischer f. 



In the others, where the antennae are always longer than the head 

 and thorax, and where the legs are most commonly of the same thick- 

 ness, the thorax is narrower than the base of the abdomen and some- 

 what narrowed behind, and the hooks of the tarsi are entire. 



Calopus, Fab. — Cerambyx, De Geer. 



Where the posterior legs, in both sexes, are the size of the others, 

 or nea,rly so, and whex-e the serrated antenna? are inserted into an 

 emargination of the eyes, with the second joint much shorter than the 

 third, in the form of a knot and transversal |. 



Sparedrus, Meg. Dej. — Pedilus ?, Fisch. 

 Similar to Calopus in the legs and insertion of the antennae ; but 

 these latter organs are simple, with their second joint obconical like 

 the third, and at least half as long §. 



Dytilus, Fisch. — Helops, Dryops, Necydacxs, Fab. — CEdemera, 

 Oliv. 

 Where the legs are also of the same thickness, or nearly so, in both 

 sexes, but where the antennae, always filiform, are inserted before 

 the eyes. The elytra are not subulate or abruptly narrowed towards 

 the extremity ||. 



CEdemera, Oliv. — Necydalis, Dryops, Fab. 

 Where the posterior thighs are strongly inflated in one of the sexes, 

 where the antennae are usually long and smaller at the extremity, and 

 the elytra suddenly narrowed near the end ^. 



The fifth and last tribe of the Stenelytra, that of the Rhyncho- 

 STONA, is composed of Insects, some of which, such as the first, are evi 

 dently related by the ensemble of their characters to the (Edemerae, 

 while the others, in a natural series, appear to belong to the family of 

 the Rhynchophora. The head is considerably prolonged anteriorly 

 in the form of an elongated snout or flattened proboscis, bearing the 



* Oliv., Encyc. Method., article Nothus. See Schoenh., Synon. Insect., I, iii, 

 App., p. 8. 



•f See the family of the Rhynchophora. 



X Calopus serraticornis, Fab. ; Oliv., Col. IV, 72, 1, 1. 



§ Calopus tesiaceus, Schoenh., Synon. Insect., I, iii, p. 4 — 11 ; — Pedilus fuscus, 

 Fisch., Entom. Imp. Russ., I, iv. 



II Dyiilus helopioides, lb., I, v, 1 ;— D. rvfus, lb., 2, and the CEdemerje with sim- 

 ple thighs of Olivier. 



^ The CEdemerae of 01i^^er with inflated posterior thighs, and subulate elytra. 

 See Encyc. Method., article (Edimere, 



