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



coxae and abutting against or sliglitly ovorlapplng the broad apex of 

 the metaaternal projection; carina geaerally entire though frequently 

 abbreviated, sometimes as much so as in the two precediug genera; 

 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 les3 well developed; prothorax variable in 

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

 tiDCt; 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 raetastemum, 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, 

 fiuely, closely puactate throughout except along the more or less im- 

 puDCtate 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.. Encharina 



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



very large in size, with partially opaque integuments; mesosternum 

 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 meta^fternal projection; head 

 moderate, strongly and arcuately narrowed 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 arcaato-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 concare 

 toward base, all the depressions impunctate though somewhat rugulose 

 along the raised basal margins, the punctures fine, confined to posterior 

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

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

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



America and Mexico, [= Tithanis Csy.] Maseochara 



Middle coxae narrowly separated to subcontiguou8,the mesosternal proces* 

 generally extending to apical third or fourth of the acetabula, frequently 

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

 visible from the sides than in Maseochara 12 



