Brazilian Baring 213 



even beyond the antenna?, feebly concave and strongly, loosely punctate 

 basally, finely, closely and obliquely substrigilately punctulate beyond the 

 antennse, which are exactly medial; prothorax a little narrower and longer 

 than in oblongns, but otherwise similar, except that the small strong punctures 

 are subequal in size and remoteness throughout, about the same size as in 

 that species and finer than in thoracicus; basal lobe almost even, the apical 

 sinus being extremely small and feeble; scutellum still smaller, smooth, not 

 longer than wide and with feebly oblique sides; elytra more obtusely oval, 

 the sides more parallel, the apical arcuation beginning at about the middle, 

 much wider than the prothorax but not more than twice as long, the grooves 

 subsimilar but less deep, with the small punctures along the bottom more 

 evident; interstitial series single and even but of almost infinitesmal punc- 

 tures, much smaller than in oblongus but almost as in thoracicus; abdomen 

 finely and sparsely punctate basally as in the female of oblongus. Length 

 4.6 mm.; width 2.0 mm. Brazil (Santarem). A single female specimen. 



tubulifer n. sp. 



Besides the remarkable beak, this genus exhibits certain other 

 extraordinary peculiarities, such as the convex presternum, the 

 elongate narrow scutellum of oblongus, and the marked sexual differ- 

 ence in the punctuation of the abdomen toward base. It is, on 

 the whole, one of the more highly specialized of the Centrinid genera. 



Liocentrinus n. gen. 



This is also an isolated genus, with body wholly unlike the pre- 

 ceding, but having the rather short, thick and strongly compressed 

 beak of the three preceding; here, however, it is separated from the 

 the head by only a very shallow obtuse reentrant angle, the sides 

 perfectly flat from base nearly to apex and coarsely, densely and 

 evenly punctured; on the upper surface it is flattened and strongly 

 tricarinate, with strong punctures between the polished carinse. 

 The mandibles are prominent when closed and have their inner edges 

 straight and even. The antennas are inserted but very slightly 

 beyond the middle, slender, with the first funicular joint nearly as 

 long as the next three, the second also somewhat elongate, the club 

 small, oval and as long as the three preceding joints. The male 

 prosternum has a narrow and deeply impressed channel, obtusely 

 limited at the sides and evenly clothed with scales, like the rest of 

 the prosternal surface, the coxae somewhat narrowly separated. 

 As in the preceding, the femora are well developed, but the hind 

 tibiae, as there also, are very short, and, in this case, broad, very 

 densely, evenly and rugosely punctate and with their outer outline 

 strongly sigmoid. The prothorax is not tubulate at apex, the 

 scutellum large, flat and quadrate and the elytra deeply grooved. 

 The type is as follows : 



Liocentrinus scutellatus n. sp.— Suboval, strongly convex and ventricose, deep 

 black and shining, wholly glabrous above, except the scutellum, which is densely 



