INSECTA. 535 



Colon HERBST. 



Consult STURM Deutschl. Fauna, Ins. xiv. pp. 4674. 



Scaphidmm OLIV. Antennae straight, moderate, thicker at the 

 apex, mostly provided with a club of five joints. Mandibles small, 

 horny, with border membranous internally, unidentate or bidentate. 

 Maxillae with two membranous laciniae. Maxillary palps quadri- 

 articulate, with last joint acuminate at the apex. Labial palps 

 very short. Body navicular, at both ends angustato-acuminate, 

 with head small, deflected. Elytra truncated at the apex. Feet 

 slender. 



Sub-genera : Scaphidium LEACH, Scaphium KIRBY, Amalocera 

 ERICHSON, Scaphisoma LEACH. 



Sp. Scaphidium agaricinum, Silpha agaricina L., PANZER Deutschl. Ins. 

 Heft 2, Tab. 3, &c. 



Nitidula FABR. Antennas straight, clavate, club mostly triarti- 

 [culate. Labrum distinct. Mandibles partly exsert, emarginate or 

 I bidentate at the apex. Maxilla? mostly with single membranous 

 I lacinia, the external lacinia obsolete. Palps short, filiform. Head 

 I retracted within thorax almost as far as the eyes. Elytra often ab- 

 tbreviate. Tarsi with fourth joint very small, subindistinct. 



Cercus LATR., Brachypterus KUGEL., Carpophilus LEACH, Nitidula 

 LATR., (Ipidia, Epurcea, Nitidula, Soronia, Amphotis, Omosita 

 ERICHS., Pria KIRBY, Meligethes KIRBY), Thalicra ERICHS., Poca- 

 dius ERICHS., Cychranus KUGEL. (Strongylus HERBST), Cybocephalus 

 ERICHS., Cyllodes ejusd. 



Compare ERTCHSON, GERMAR'S Zeitsch. f. d. Entom. iv. 1843, P- 22 5> 

 &c. v. 1844, p. 438 &c. ; ERICHSON'S Naturgesch. d. Ins. Deutschl. in. 

 pp. 125 220. 



Sp. Nitidula Upustulata FABR., Silpha Upustulata L., PANZER, Deutschl. Ins. 

 Heft 3, Tab. 10, STURM Deutschl. Fauna, Ins. xv. Tab. 298, &c. 



Ips. FABR. Labrum membranous, concealed under the clypeus, 

 porrect between the mandibles. Maxilla with single lacinia. Tarsi 

 as in the preceding genus. 



Rhizophagus HERBST. 



Peltis GEOFFR., TJiymalus LATR. Antennas with club triarticu- 

 Ilate. Maxilla3 with two lacinige, the interior armed with a horny 

 | hook. Body broad, depressed, with thorax and elytra marginate. 



