Coleopterological Notices, IV. 547 



rather closely punctured. Prosternum with a very deep parallel-sided sulcus, 

 as wide as the beak, the coxae separated by about their own width. Length 

 3.9-4.2 mm. ; width 1.8-2.0 mm. 



Nebraska. 



This is the largest species of the genus which I have seen, and 

 differs greatly from the others in its distinctly subcuneateform, with 

 the prothorax wider toward base and much more swollen through- 

 out the width. 



AMPEEOGLYPTER. 



LeConte— Proc. Am. Phil. Soc, XV, p. 299. 



A distinct genus, evidently composite in its characters and form- 

 ing one of the transitions from Madarellus to Pseudobaris, but, in 

 spite of the polished glabrous integuments and finely striate, im- 

 pressed and subimpunctate elytra, which give it an external resem- 

 blance to the former, it is in realty much more closely allied to the 

 latter of these genera. 



The prosternal modification is peculiar to this genus, although 

 feebly suggested in some other forms such as Glyptobaris. In 

 sesostris it is widely and rather feebly impressed, the impression be- 

 coming flat and obsolete between the coxae, subimpunctate through- 

 out, widening slightly anteriorly, and ending near the apical margin, 

 at the transverse prothoracic constriction. At its anterior limit it 

 is deepest, and is bounded by an abrupt declivous wall which is 

 transverse and nearly straight ; the sides of the excavation are also 

 abrupt for a short distance behind the apex. In longipennis it is 

 rather wider and more feeble, but deep and abruptly limited at each 

 apical angle. It is easy to perceive here an extreme development 

 of the two deep foveas and connecting groove mentioned under 

 Onychobaris and its allies, only here the two angles of the impres- 

 sion, which represent the foveae, are relatively much more widely 

 separated. 



The anterior coxae are small, rather distant and separated by more 

 than their own width. The beak and antennae present no notice- 

 able peculiarities, being nearly as in Pseudobaris. The claws are 

 moderately long, closely connate in basal third, subparallel and 

 gradually, feebly everted toward tip as in the pseudobarides gener- 

 ally, and differing radically from the normally free and divergent 

 form seen in Madarellus. 



Our three species may be readily distinguished as follows: — 



