400 Mr. G. Lcwi.s 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 ; pvgidium 

 transversely gibbous above and slightly impressed inferiorly ; 

 prostenium closely punctate, feebly arched at the base ; meso- 

 stcrnum more sparsely punctate, punctures rather large ; meta- 

 sternum with a distinct median line, lateral stria oblique ; 

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

 tooth in the latter is somewhat isolated. 



This species is known from 7\ vu-ens by the absence of a 

 marginal stria on the mesosternum. The genus Teretriosoma 

 now contains twenty-two species. 



Hah. Central America. 



Trypanceus rostratus, sp. n. 



Cyliudricus, niger, nitidus ; T. spinigero proxime aflBnis at robustior ; 



eljtris hievibus. 

 L. 5^-6 mill. 



Cylindrical, black, shining, tarsi pitchy red. 



(J . 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 carina? 

 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 proj)ygidium 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 stria? are rounded otf and 

 meet anteriorly ; the mesosternum is feebly and spursoly 

 })uncturcd, with a stria at the sides, which is evanescent iii 

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

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

 L. cum rostro G.| nnll. 



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 iheseiitelluni ; the elytra are somewhat similar to tho.sc in 



