COIiEOPTERA. 403 



PoGoxoPHORUs, Lat. Gyllen. — Leistus, Frcel. Clairv' — Carabus, 

 Fab. — Manticora, Panz. 



Remarkable for the elongation of the exterior palpi, those of the 

 labium being longer than the head, for the mandibles, the external 

 side of which forms a salient and flattened, angle, and for the project- 

 ing ligula terminated by three spines. The head is suddenly narrow- 

 ed behind the eyes, and the joints of the antennae are long and. slender. 

 All the species known belong to Europe *. 



Nebria, Lat. 



The Nebriae only differ from the Pogonophori in negative charac- 

 ters, or in the much greater shortness of the palpi ; in the want of 

 dilatation in the external side of the mandibles, which merely forms 

 a very small auricle, not extending beyond the base of the jaws; and 

 in the absence of the strangulation, or neck, in the head. The an- 

 tennae are also proportionably thicker, and composed of shorter 

 joints -j-, 



Alpteus, Bon. 



Mere apterous Nebriae, somewhat more oblong, that especially 

 inhabit high mountains %. 



Sometimes the body, arched or convex above, is nearly obicular, 

 the thorax very short, transversal, strongly emarginate anteriorly, 

 and wider and lobulate posteriorly. The scutellum is not apparent. 

 The first joint alone of the two anterior tarsi of the males — and 

 sometimes that of the intermediate ones as in the O. melange — is sen- 

 sibly dilated. 



Omophron, Lat. — Scolytus, Fah. 



This subgenus is composed of a small number of species found on 

 the shores of rivers, &c. in Europe, North America, Egypt and the 

 Cape of Good Hope. M. Desmarest has described the larva of the 

 most common species. Its form approaches that of the larva of a 

 Dytiscus. The anatomical observations of M. Dufour appear to con- 

 firm this affinity §. 



The others, in which the body is tolerably thick, have large and 

 very prominent eyes ; antennae that are slightly enlarged near the 

 extremity, and composed of short joints, mostly in the form of a top 



* Carabus sjnnibarhis, Fab. ; Leisiits cxrulais, Clairv. Entom. Helv., II, xxiii, 

 A, a ; — C. spinilabris, Fab. ; Leistrus rufescens, lb. B, b ; — C. rufescens, Fab. ; 

 Carabus terminafus, Panz., Faun. Insect. Germ., VII, ii. For the other species, 

 see Spec. Dej., II, p. 212, et seq. 



t Nebria arenaria, Lat. Gener, Crust, et Insect., I, 2, vii, 6 ;— Carabus brevi- 

 colh, Fab. ; Panz. lb. XI, 8 ; Clairv. lb. XXII, B ;— C. subuhsus, Fab. ; Clairv., 

 lb. A ; Panz. lb. XXXI, 4 ;— C. Picicornis, Fab. ; Panz. lb. XCII, 1 ;— C. psam- 

 modes, Ross., Faun. Etrusc, Mant. 1, v. M. 



X The C. Hehdgii, Panz. lb. LXXXIX, 4, is an Alpaeus. See Spec. Dej. II, 

 p. 221, et seq. 



§ See Encyclop. Method., article Omophron; Entom. Helv., II, xxvi ; Lat., 

 Gener. Crust, et Insect. I, 225, vii, 7, and the Srec. Dej., II, p. 257, et seq. 



