CARABIDAE. 45 



mm. — Tcnninal jcnnts of Ijotli jnalpi similar, more or less cylindri- 

 cal, truncate. Pinacodera. 

 II. — Tarsi hairy above. Penultimate joint of labial paliii usuallv 

 with more than two set<e. Cymindis. 

 jj. — Tliorax lobed at middle of base. Tarsi hairy above. Last 

 joint of labial palpi securiform. Apenes. 

 A-b. — AntenniB with less than three joints glabrous. Menium not 

 toothed. Terminal joint of palpi ovate, acuminate at tip 

 and pubescent. Ungues simple. Eucaerus. 

 B. — Mandibles without scrobes. Mentum not toothed. 



Ungues simple, fourth tarsal joint not dilated. Pentagonica. 



Ungues pectinate, fourth tarsal joint bilobed. Onota. 



Tribe XXVII.— HELLlIOi^IlVI. 



AntennJE moderate in length, rather stout, usually compressed, 

 arising under a distinct frontal plate, all the joints more or less 

 pubescent, two or four at the base less densely, first joint stout, 

 equal in length to the next two. Head broadly oval, not nar- 

 rowed in front of the eyes, with a distinct neck more or less 

 :il)ruptly formed, clypeus moderately prolonged, a setigerous 

 puncture at eaijh side, front with two supra-orbital setigerous 

 l)unctures. Eyes round, moderately prominent, close to the 

 mouth beneath. Labrum usually large and prominent, more or 

 less concealing the mandibles, sexsetose in front. Mandibles 

 stout, arcuate, rarely prominent, acute at tip. Mentum broad, 

 deeply emarginate, usually toothed ; ligula prominent, bisetose at 

 tip, the paraglossse adherent to the sides, rarely {Poli/i^tichui:;) 

 longer than it, and usually semicorneous ; the paljn of moderate 

 Uuigth, the terminal joint elongate-oval or fusiform and obtuse at 

 tip, the penultimate l)isetose in front. MaxilliB hooked at tip, 

 ciliate or spinous within, the outer lobo rather stout, biarticulate, 

 the palpi stout, the terminal joint oblong-oval, truncate at tip, 

 more or less flattened. Thorax more or less cordate, sides and 

 hind angles with a distinct setigerous puncture. Elytra oblong, 

 truncate at apex, base not margined, sides narrowly indexed, 

 margin entire, disk striate or broadly sulcate, without dorsal 

 punctures. J'rostornum not prolonged. Mesosternal e])inK'ra 

 narrow. Metasternal epimera distinct; the posterior coxte con- 

 tiguous. Legs moderate in length, the anterior femora more or 

 less clavate. Tibiije sometimes {Ilelluomorpha) compressed, fuid 

 finely bicarinate on the outer edge, the anterior rather stout and 



