178 Mr. G. Lewis on 



to the inner stria, the marginal stria is complete behind the 

 head, but extremely fine and laterally cannot be seen from 

 above ; the elytra, strias, outer humeral complete and carini- 

 form, inner humeral fine and complete and sinuous before the 

 apex, 1-3 dorsal shortened posteriorly, interstices rather 

 wide, that between the first and second widest at the base, 

 fourth and sutural finer, fourth more shortened apically and 

 at the base turning towards the suture, sutural stria shortened 

 before the base and bent at the tips, the punctuation of the 

 elytra is similar to, but rather less close than, that of the 

 thoracic disk ; the propygidium and pygidium are clearly 

 and rather closely punctate ; the presternum is bistriate, 

 strias joining anteriorly, sinuous between the coxas and very 

 feebly divergent at the base ; the mesosternum has a fine 

 marginal stria and the metasternum two lateral ones ; the 

 anterior tibia 3 , are moderately dilated. 



The superficies of this species is closely similar to //. com- 

 mensalis, Lew., but it is a little less convex, the thoracic 

 punctuation less dense and pygidia more strongly punctate. 

 In H. commensalis the outer humeral stria is fine and feebly 

 cariniform, inner humeral fine and somewhat vague and 

 evanescent in the middle. In H. cavifrons, Lew., the outer 

 humeral is wanting and the inner humeral short, basal, 

 and vague. 



Bab. Kio Janeiro {11. H. Smith). 



Terapus bicarinatus, sp. n. 



Oblongus, postioe gibbus, cinereo-brunneus ; antennis tarsisque 

 rufis ; fronte punctata, margine extus elevata ; thorace utrinque 

 profunde excavato ; elytris in medio lougitudinaliter carinatis. 



L. 2^ mill. 



Oblong, gibbous behind, ashy-brown, somewhat shining ; 

 the iorehead, surface closely and evenly covered with large 

 shallow rugose punctures, with the interstices smoother and 

 slightly raised, margin elevated, angular before the eyes, 

 with an emargination on the anterior edge; the thorax 

 punctured like the forehead, but the interstices are wider and 

 flat, lateral edges raised and continued obscurely as a stria 

 behind the head, within the margin on either side are two 

 irregular deep pits, the limits of these cavities are thin and 

 transparent and distinctly reddish brown, anterior angles 

 somewhat rounded off, with the edge behind the head simply 

 but widely emarginate, not bisinuous like that of Terapus 

 Mniszechi, Mars. ; the elytra have large shallow spaces (in 

 lieu of punctures), a tew of which are confluent, with their 



