DESCRIPTION'S OF NEW SPECIES. 137 



of the body, moderately stout, and not serrate, with the 3d joint 

 equal in length to the 4th, but a little more slender.* 



* Several of the genera of Cistelidse, now reoognised by me IS repre- 

 sented in North America, are not mentioned in the table of genera on |>. 

 244 of the Classification of Coleoptera. The following table Bhoald be 



substituted : — 



A. Mandibles emarginate at tip (truncate in Stenochidtu) ; 



a. Body Upiform, thorax snbquadrate, narrower than the 



elytra, which are elongate, anil deeply striate ; pe- 

 nultimate joint of tarsi lobed. UPINELLiB. 



This group is represented by Stenochidus, which 

 differs from the European Upinella by the maiulibles 

 less emarginate at tip, and the last joint of maxillary 

 palpi comparatively much longer, the external side 

 being nearly twice as long as the basal side. 



b. Body oval, thorax widest at base, with basal angles 



distinct. CISTEI..E. 



* Penultimate joint of tarsi lobed beneath ; 

 Last joint of maxillary palpi with the apical side 



longest. Allb ii.a. 



Last joint of maxillary palpi with the apical side 

 nearly equal to the external (hind angles of 

 thorax nearly rectangular.) Hymkxorcs. 



** Tarsi not lobed beneath ; 



Last joint of maxillary palpi elongate triangular. Cistela. 

 Last joint of maxillary palpi broad triangular ; 



Third joint of antennae nearly equal to the 4th ; 

 Anterior tarsi as long as the tibiae ; antenna? slender. Isomira. 

 Anterior tarsi shorter than the tibiae ; antenna? stout. My< et<m i 

 Third joint of antenna? much shorter than the 4th 

 (b'th ventral segment visible) ; 

 Antennae strongly serrate, 2d and 3d joints equal. C'iikomatia. 

 Antenna? elongated, not serrate, 3d joint longer 



than 2d. Capwochbi 



B. Mandibles acute at tip ; 6th ventral segment visible. CTENIOPI. 



Hind coxa? divided by a transverse groove; the pos- 

 terior portion larger, flat, with the hind 

 acute ; 

 Anterior tarsi elongated, deformed in the male. AVOROCHIBDS. 



Hind coxa? divided into two nearly eqnal porl 

 Antennae slender, hind angles of thorax reotangnlar. Crnriopro. 

 The species of Cistela are easily reoognized by the last joint of the 

 maxillary palpi being elongate triangular, the apical side mnofa shorter 

 than either of the other two in the first division, eqnal to the basal one in 

 the second. They form two divisions ; in the first (as in the European 



