254 PROCEEDINGS OF THE NATIONAL MUSEUM. 



Two examples, collected on Cbuthaiii island l)y ])r. (1. Baur. The 

 species appears to be nearest allied to the Brazilian forms of tlie 

 cayennensi.s group, but it is apterous, and if intercalated in the table 

 of Chaudoir's monograph it would be placed near the Mediterranean 

 species S. laevujatuN Fabricius,' 



SELENOPHORUS GALAPAGOENSIS Waterhouse. 



Selenophorm galajjatjoensin Watekiiousk, Ann. Nat. Hist., 1845, XVI, p. 22. 



Oblong oval, feebly convex, winged, above piceous, distinctly aluta- 

 ceous, feebly shining; elytra slightly bronzed. Labrum ferruginous, 

 feebly emarginate. Mandibles smooth, scrobes large. Antennae fer- 

 ruginous, reaching to the humeral angles, the third joint one-half 

 longer than the second. Thorax broader than long, rounded at the 

 sides, widest before the middle, slightly narrowed to the base; poste- 

 rior angles 6btuse ; apex feebly sinuate near the angles; base broadly 

 emarginate at middle; disk impunctate, with the median line finely 

 impressed, often abbreviated; transverse apical line effaced; basal 

 foveae feeble. Elytra slightly broader than thorax, basal line slightly 

 sinuate, forming an obtuse angle with the side margin; apices very 

 feebly sinuate; disk with fine smooth striae, more deeply impressed at 

 apex, the second, fifth, and seventh with series of small impressed 

 punctures; the submarginal punctures coarser; subscutellar stria long. 

 Epipleura ot thorax and elytra ferruginous. Ventral surface rufo- 

 piceous, nearly smooth. Prosternum rounded at apex, not margined. 



' A very distinct species of IHntifhiix, apparently nndescribed, has been collected 

 in Hantaicni, Brazil, by ]Mr. Herbert II. Suiitb. It is characterized as follows: 



DISTICHUS SMITHI, new species. 



Elongate, parallel, black, shining, smooth above and slightly depressed, winged. 

 Alcutum riignlose wftli distinct submarginal and median carina, the tooth very 

 short, obtusely augulate at apex. Paragcnac slightly rugose, marginatc; externally, 

 dce])ly emarginate at ai)ex. Mandibles long, sinuate externally, strongly toothed, 

 not striate above. Antennae ferruginous, submoniliform, reaching the hind angles 

 of thorax. Head smooth; eyes prominent ; epistoma with a few short striae at the 

 sides; lateral margin in front of the eyes angulate, less prominent than the eye. 

 Thorax one-half broader than long, widest in front, scarcely narrowed and feebly 

 rounded to the hind angles; base distinctly pedunculate, linely rugose along the 

 sides and in the rounded foveae; hind angles with a small tooth; disk smooth with 

 median and apical lines deeply impressed, obsoletely strigose along the ajiical mar- 

 gin. Elytra longer than head and thorax, finely toothed at the humeri, granulate 

 along the basal and lateral margins; disk deeply striate; striae smooth; intervals 

 convex, smooth, the third with six impressed punctures on the outer side. Ventral 

 surface finely rugosely granulate, smooth along the median line. Abdominal seg- 

 ments with two inincturcs, the terminal segment with four; the basal line on the 

 last three segments distinct. Anterior tibiae with four denticles above the third 

 tooth; the middle tibiae with two spines, the upper one very small, not much differ- 

 ent from the nearest of the denticles above. I'osterior tibiae with five long hairs 

 on the ]»osterior margin, not densely rmibriate. l^ength, 23 mm. ; width, 7 mm. 



Type.—^o. 1313, IJ.S.N.M. 



Four examples, Santarem, Brazil. 



