from the West Indies. 329 



broader than the thorax, widest in the middle, scared} 7 as 

 Long as the thorax, transverse ; humeral callus well marked, 

 sutural callus absent, sutural stria distinct ; no trace of 

 discal stria or impression; lemon-yellow, with humeral 

 callus, base, suture, and apical margins narrowly reddish 

 brown, the lateral margins very narrowly reddish. Abdomen 

 impunctate. 



St. Vincent (H. H. Smith). Type in the British Museum. 



S T E N I N I. 



11. Stenus (Mesostenus) lucens, sp. n. 

 (croceipes, FvL, in lift.). 



Narrow, elongate, shining black ; elytra and abdomen very 

 sparingly punctured. Antennae and legs reddish testaceous, 

 the club of the former infuscate. 



Length 3 - 5 mm. 



This species, by its very smooth polished surface, recalls 

 the genus Megalops. 



Head, with eyes, broader than the elytra, with rather broad, 

 raised, almost impunctate, central space ; the rest of the 

 surface with moderately large, not very close punctu ration ; 

 the central space and the surface between the punctures 

 smooth and polished without trace of ground-sculpture, 

 glabrous ; labrum black. Antennae rather long and slender, 

 second joint shorter than the first, third much more slender 

 than the second and nearly double its length, fourth a little 

 shorter than third, fifth as long as fourth, sixth a little 

 shorter than fifth, seventh a little shorter than sixth ; eighth 

 about half the length of seventh, longer than broad; ninth 

 and tenth of equal length, as long as. but stouter than, 

 seventh ; eleventh oval, pointed. Thorax widest at the 

 middle, scarcely longer than its greatest width, equally 

 narrowed in front and behind, impressed on either side at 

 the widest part ; puncturation much finer and more sparing 

 than on the head, the interspaces smooth and polished, 

 glabrous. Fourth tarsal joints deeply bilobed, the hind 

 tarsi long and slender. Scutellum triangular with large 

 puncture at apex, coriaceous. Elytra shorter than the 

 thorax, transverse, with distinct humeral callus and an 

 impression internal to the latter; disc impressed, puncturation 

 fine and scattered as on thorax, interspaces smooth, polished; 

 glabrous. Abdomen margined, gradually narrowed to the 

 apex, with a few scattered punctures at the bases of the 

 segments ; the rest of the surface almost impunctate, pubes- 

 cence scanty. 



