130 Trans. Acad. Sci. of St. Louis. 



coxae and abutting against or slighU}- overlappiog the broad apex of 

 the metasternal projection; carina generally entire thougti frequently 

 abbreviated, sometimes as much so as in the two preceding i^enera; 

 head rather small in size, subparallel or only slightly narrowed behind 

 the well developed eyes, the front between the latter angulate; an- 

 tennae variable but more or less well developed; prothorax variable in 

 sculpture, the basal angles more or less broadly roundeU and indis- 

 tinct; elytra each broadly arcuate at apex, not sinuate externally; 

 abdomen densely to very sparsely punctured, the first three tergites 

 alone impressed at base, gradually and rapidly less strongly as a rule; 

 hind tarsi variable. Cosmopolitan. Baryodma 



10 — Body only moderately stout, parallel, strongly convex, the mesosternal 

 process somewhat abbreviated, attaining the acute apex of the rather 

 strongly produced metasternum, the carina strong and entire; head 

 rather small, parallel behind the well developed eyes, the front angulate ; 

 maxillary palpi normal; antennae unusually small, the second joint 

 much longer than the third; prothorax sparsely, irregularly and 

 strongly punctured, with two deeply impressed median sulci, the base 

 broadly lobed in the middle, the angles obsolete; elytra very coarsely 

 sculptured, each strongly sinuate laterally at tip; abdomen parallel, 

 finely, closely punctate throughout except along the more or less im- 

 punctate median line, the first four tergites strongly impressed at base, 

 successively somewhat less strongly so, the depressions more coarsely 

 punctured; hind tibiae sparsely setose, very slender at base, swollen 

 thence to the tip, equal in length to the tarsi or but slightly longer, the 

 first joint of the latter elongate. Pacific Coast of America. .Eucliarina 



II— Middle coxae widely separated. Body more or less stout, frequently 

 very large in size, with partially opaque integuments; mesostrfrnutn 

 wholly without trace of carina, the process extending only slightly be- 

 yond the middle of the acetabula, rounded or truncate at tip and abut- 

 ting against or received within the truncate or sinuate and gener- 

 ally broader apex of the long broad raeta'^teraal proj'-ction; head 

 moderate, strongly and arcuately narri.wed behind the very moderate 

 eyes, the front broadly parabolic; palpi elongate and normal; antennae 

 well developed, generally stout; prothorax broadly arcuate at base, 

 either continuously with the sides, the basal angles being obsolete, or 

 discontinuously, the angles being distinct; elytra each arcuato-truncate 

 at tip, not at all sinuate near ths sides; abdomen with the first two 

 tergites deeply and broadly, the third less deeply and less widely im- 

 pressed at base, the fourth and fifth broadly and feebly concave 

 toward base, all the depressions iiupuaclale though somevv'hat rugulose 

 aloi-g the raised basal margins, the punctures fine, confined to posterior 

 half of all the tergiles except the sixth, which is wholly punctured; 

 legs stout, the tibiae setulose, the hind tarsi much shorter than the 

 tibiae, with the baSil joint moderately elongate. Sonoran fauna of 

 America and Mexico. [= TUhanis Csy.] Maseochara 



Middle coxae narrowly separated to subcontiguous,the mesosternal process 

 genei ally extending to apical third or fourth of the acctabula, frequently 

 very slender, truncate to very acute at tip; hypomera generally less 

 visible from the sides than in Maseochara 12 



