ELATEIUDAE. 101 



clumtin, middle coxa' rounded witliout trocliaiitiii, posterior coxft 

 transverse, dilated in a plate jiartly covering the tliiglis. Abdo- 

 men with six free ventral segments. Legs subibssorial, the ante- 

 rior tibia; somewhat dilated. Tibial spurs long, ungues simple. 



A sub-fiimily of small extent considered, until very recently, 

 a distinct family. The differences formerly existing have gradu- 

 ally disappeared by the discovery of additional species until, at 

 the present, very little remains to sei)arate them from the Elate- 

 rinas even to the extent admitted here. 



The genera in our fauna are: — 



Anterior tibiae entire. Cebrio. 



Anterior tibiae emargiiiato externally. Scaptolenus. 



AnachUus Lee, formerly included in the tal)le, does not differ 

 essentially from Cebrio. 



Su])-Family lY.— PEROTHOPIN J3. 



Antennae not very closely approximated at base, arising under 

 well-marked frontal ridges from small foveas, at a distance in 

 front of the eyes; mouth inferior; labruin transverse, arcuati! 

 anteriorly, closely united with the front; mandibles acute at li}) 

 slightly projecting beyond the labrum ; palpi moderate, the last 

 joint slightly dilated. Anterior coxob small, globular, without 

 trochantin, middle coxae oval with a small trochantin ; j^osterior 

 coxae transverse, the plate broadly dilated internally. Tibite 

 slender, the spurs moderate in extent. Tongues serrate. 



This sub-family contains but one genus, Perothops, which had 

 for a long time been associated with the Enenemina?. In the 

 preceding edition of this work it formed with Ccrophytuin the 

 sub-family CerophytidjB. Li his elaI)orate monograph of Eucne- 

 mido3 de Bonvouloir rejects it from association with that series. 

 It seems to be a peculiar form intermediate between tin- Eucnc- 

 minae and Cebrionina;, related to the laltcr series probably 

 through 3Ii(so'pHis Che v. 



Perothops contains but two species. /'. muculn Gyll. from the 

 Atlantic States and P. Witticki Lee from California. 



Sub-Family V.— CEROPH YTINyE. 



Antenmr approximate at base, arising each side of a frontal 

 ))rotuberanee ; mouth inferior; labrum sliort, transverse, closelv 



