AMERICAN COMPONENTS OK THE TENTVRIIN/f-: 517 



Of the two species subsequently attached to Mesabatcs^ spissi- 

 corm's may possibly be congeneric though probably not, but 

 incpqualis is certainly generically different. In incB(jicalis the 

 head is moderate in size, remotely and feebly bisinuate at apex, 

 with the very short and broad median lobe rectilinearly truncate, 

 the eyes rather small, not prominent but only slightly emargi- 

 nate anteriorly, with a longer straight and oblique orbital carina, 

 and the antennae are long, very slender and enlarged distally. 

 The prothorax is much narrower than the elytra, subtruncate at 

 base and the elytra oblong, short and punctato-seriate except 

 apically. The metasternum is very nearly as long as the first 

 ventral, with the ante-coxal grooves obsolete and represented by 

 a row of smaller punctures and the met-episterna are rather broad. 

 It constitutes the type of a genus very near Sterifhanus^ which 

 may be named Mesabatodes (n. gen.). 



PosiDES Champ. 

 In its general characters this genus is also very close to 

 Steriphamis, the antennae, eyes, palpi and proportion of the 

 various parts being similar, but the mandibles are more strongly 

 toothed above, the left distinctly so and the right still more 

 strongly, and the apices are not bifid but truncate. The front 

 of the head is transverse and very feebly angulate, the lateral 

 lobes projecting anteriorly somewhat further, with their sides 

 oblique, becoming parallel toward the eyes. The prothorax is 

 subequal in width to the elytra, as in Steriphanus^ and is strongly 

 lobed at base, and the metasternum is slightly shorter than the 

 first ventral, with obsolete ante-coxal grooves and moderately nar- 

 row side-pieces. The genus differs from Steriphanus^ besides, 

 in having the tarsi densely clothed beneath with short fulvo- 

 cinereous pubescence. 



Pescennius Champ. 

 This genus is a member of the Trimytini, differing very much 

 from the other genera in its short and angular epistomal lobe, 

 though partially connected in this respect through the subgenus 

 Pimaltus, of Trimytts, where the lobe becomes rounded and 

 less prominent than in Trhnytis or Chilometopon, The hairy 

 vestiture of Pescennius is no more exceptionally significant in 



