40 THE ORDER OF COLEOPTERA. 



apart from this sexual, and therefore often unavailable character, the 

 Chkeniides can usually be distinguished from the Carabides i)roi)er by 

 the presence of the tibial notch, and by their smaller size and more 

 varied colors ; from the Scari tides by the absence of the gap between 

 the thorax and the elytra; from the Brachinides by the thorax and ab- 

 domen never being of contrasted colors, and by their simple claws ; and 

 from the Ilarpalides by their usually lighter colors and silken surface. 

 But a considerable number of species which are black and hairless, like 

 the Harpalides, are included with the Chlajniides proper on account of 

 the structure of their feet. But these we shall explain more particularly 

 in our references to particular genera. 



In a strictly scientific point of view, the Chl^eniides can scarcely be 

 regarded as forming a sub family distinct from the Harpalides, but it is 

 a matter of convenience, in practice, to subdivide very extensive groups. 

 If we regarded structural considerations alone, a large proportion of the 

 Carabid* would have to be united in one great division, whilst certain 

 anomalous genera such as Omophron, Ozccna, Morio, and a few others, 

 would really constitute the types of distinct sub-families. 



A. Body biisute; head 'attaclied by a 'short neck; abdomen pedunculated; size below medium; 



colors varied with fiilvoua and black PANAOiEUS, 3 sp. 



A A. Bodj' finely pubescent; head without neck; abdomen sessile ; thorax narrower than abdo- 

 men; si7.e about medium ; colors mostly green or blue-black Ciii.jEVH's, 35. 



AAA. Body glabrous ; thorax nearly or quite as wide as abdomen ; size medium or above ; color 

 black. 

 B. Body elon;4'atedor elliptical ; anterior angles of the thorax advanced ; elytra cariuated near the 



margin ; color black, usually with rich violet or metallic tints DictLUs, 21. 



B B. Bo ly oval; thorax and elytra, ordinary color black. 

 C. Head broad_ and obtuse.- thorax a little narrower at base than elytra; mentum without 



tooth DirLOCUEILA, 3. 



C C. Head small and pointed; thorax as wide at base as elytra ; mentum toothed Oodes, 8. 



A A A A. Body glabrous ; thorax small ; size small ; color light red with black spots. .Badisteu, 8. 



Fanaga'm contains two N. A. species, the crucigenis and fasciatus of 

 Say, both of which are rare. The generic name means holy, in allusion 

 to the arrangement of the spots on the elytra, in the typical species, 

 somewhat in the form of a cross. GhUvnius contains many species, one 

 of the largest, most beautiful, and commonest of which is the Chlwnius 

 sericeus of Forst. (fig. 12), a fine green insect, with yellow legs, and clothed, 

 like the rest of the species, with a microscopically fine silken down, or 

 I)ubescence, which can scarcely be seen directly from above, but which 

 is quite distinct when viewed side- ways, with the aid of a lens. Diccvlus 

 [two-pitted, in allusion to the hollows on the thorax) contains a number 

 of rather rare beetles, some of which are pure black, but most of them 

 ar^ very richly tinted. They can be distinguished from the black Har- 

 palides by their more elongated form, and more particularly by the 

 shape of their thorax, which is almost square, with its anterior angles 

 advanced, and considerably turned up at the sides. 



