34 Monograph on the Cebrionidce, hy Dr. Leach. 



num, in some of these genera, concave, with the margin elevated 

 or reflexed, in others flat or convex ; feet strong, thighs thick and 

 compressed, the hinder ones bear an appendage resembling a 

 trochanter ; tarsi of the fore and middle feet five-jointed, the 

 hinder ones four-jointed. Head oval, eyes large, rounded and 

 prominent. Maxilla? membranaceous, mandibular strong, ex- 

 serted, with an hiatus interposed. Antennae nearly of the length 

 of the body, ten-jointed and inserted before the eyes. Labrum 

 very short ; ligula furnished with a palpus-bearing appendage. 

 Palpi four. 



STIRPIUM ET GENERUM SYNOPSIS. 



* Thorax quadratus, antice subangulalus. Sternum antice pro- 

 ductum. 



Stirps J. — Elytra integra. Antennae et tarsi elongati: — 



Antennae articulo secundo tertio breviore, ultimo abrupte 



mucronato. — i. analestesa. 

 Antennae articulis secundo et tertio aequalibus, aliis breviori- 

 bus ultimo gradatim attenuate — n. boscia. 

 ** Thorax transversus, antice rotundatus. Sternum concavum, 

 margine dilatatd, planum aut convexum. 



Stirps 2. — Elytra integra. Antennae et tarsi crassiores et breviores. 

 Antennae subcrassae, filiformes, simplices, longae articulis 2 et 



3 brevioribus, ultimo abrupte acuminato. — in. cebrio. 

 Antennae articulis, 2 et 3 longitudine aequalibus, latitudinem 

 longitudine aequante, ultimo apicem versus incrassato, 

 abrupte acuminato. — iv. tibesia. 

 Stirps 3. — Elytra postice dehiscentia. Antennae et tarsi breves. 

 Antennae articulo tertio multo crassiore, ultimo apicem ver- 

 sus gradatim acuminato. — v. dumerilia. 

 Antennae subabrupte extrorsum crassiores. — vi. hammonia. 

 Antennae filiformes, articulis moniliformibus, ultimo acuto. — 



VII. BRONGNIARTIA. 



GENUS I.— ANALESTESA.+ 



Antennm elongatae, articulo secundo tertio breviore, ultimo mu- 

 cronato. 



* Prostemum, Fischer. + Habent species omnes hujus generis, caput 

 s uperne et thoracis dorsum, dense villosa. 



