400 Mr. G. Lewis on 



dorsal region, finer and closer at the apex, bases with a trans- 

 verse impression, no striae; propygidium and pygidium densely 

 punctured, punctures finer than those on the elytra ; pygidium 

 transversely gibbous above and slightly impressed inferiorly ; 

 prosternum closely punctate, feebly arclied at the base; meso- 

 sternum more sparsely punctate, punctures rather large ; meta- 

 sternum with a distinct median line, lateral stria oblique ; 

 anterior tibire 7-dentate, intermediate 7-8-dentate, the centre 

 tooth in the latter is somewhat isolated. 



This species is known from T. virens by the absence of a 

 marginal stria on the mesosternura. The genus Teretriosoma 

 now contains twenty-two species. 



Hah. Central America. 



Trypanceus rostratus, sp. n. 



Cyjiudricus, niger, nitidus ; T. sjpinigero proxime affinis at robustior ; 



elytris la?vibus. 

 L. 5|-6 mm. 



Cylindrical, black, shining, tarsi pitchy red. 



^ . Head with two conspicuous tubercles over the eyes, 

 the base of each is carried forward as a carina towards the 

 apex of the rostrum ; before the apex is reached the carinse 

 join and the extremity of the rostrum is elevated ; in small 

 examples the rostrum is not thickened at the end ; in the 

 middle of the rostrum there is a straight, well-defined carina, 

 with a longitudinal sulcus on each side of it ; between the 

 two ocular tubercles the head is lightly scooped out in a semi- 

 circular outline ; thorax sparsely punctured, anterior angles a 

 little prominent ; behind the neck are two obtuse tubercles 

 rather close together, the marginal stria ceases in front of the 

 tubercles; elytra nearly smooth, the punctuation being very 

 fine and sparse ; pygidium and propygidium distinctly and 

 rather closely punctate, the former bearing flavous hair at the 

 apex; the prosternum is incised at the base and margined 

 with a fine stria on each side, the striae are rounded off and 

 meet anteriorly ; the mesosternum is feebly and sparsely 

 punctured, witli a stria at the sides, which is evanescent in 

 front ; the metasternum has a well-marked median line and is 

 punctured similarly to, but more distinctly than, the thorax. 

 L. cum rostro G^ mill. 



The female has the rostrum feebly punctured, head a little im- 

 pressed between the eyes, without tubercles or carinie ; thorax, 

 stria interrupted at the points corresponding to the tubercles 

 in the male ; the thoracic punctures are much larger, especially 

 before thescutcllum; the elytra are somewhat similar to those in 



