440 Memoirs on the Coleoptera 



small, free, transversely oval; elytra a third longer than wide, at the feebly 

 tumid humeri barely visibly wider than the prothorax, nearly twice as long, 

 the sides subparallel and feebly arcuate, becoming evenly rounded behind 

 about the middle; surface even, the subapical umbones large and feeble; 

 grooves even, feebly punctate, sharply defined, coarser though not acutely 

 exarate at apex, a third or fourth as wide as the intervals, which have single 

 series of very minute and well spaced punctules; under surface moderately 

 coarsely punctate, each puncture with a slender white squamule. Length 

 3.25 mm.; width 1.45 mm. Mexico (Orizaba). One specimen. 



binaria n. sp. 



Form nearly as in the preceding but smaller and narrower, the lustre, coloration 

 and vestiture almost similar; beak (o 71 ) nearly similar, almost as long as the 

 head and prothorax, the antennse very slightly beyond the middle; prothorax 

 shorter, two-fifths to nearly one-half wider than long, almost similar in 

 outline but with shorter tubulation; sculpture almost similar, except that 

 the punctures at the extreme sides are somewhat less coarse and still more 

 separated; elytra nearly similar; pygidium (cf) larger and more transverse 

 than in the preceding female type, the male with the abdomen feebly im- 

 pressed along the middle basally. Length 2.5-2.75 mm.; width 1.1-1.22 mm. 

 Mexico (Vera Cruz). Two specimens curticollis n. sp. 



Although represented by opposite sexes, I have scarcely any 

 doubt that there are two species included in the material at hand. 

 The Central American Pseudobaris leucostigma of Champion, also 

 belongs evidently to this genus, but is shorter, more oval and less 

 cylindric than the species above described. 



Sindesus n. gen. 



The body in this remarkable genus, which stands entirely alone 

 in the tribe, is broad and convex, obtusely cuneiform and very 

 closely and coarsely sculptured, the beak long, cylindric, arcuate 

 and not separated from the head by a depression. Antennae slender, 

 between basal third and fourth, the scrobes subhorizontal, the first 

 funicular joint as long as the next three and as long as the club, the 

 outer joints somewhat longer than wide, the club narrow, gradually 

 acutely pointed, pubescent and as long as the four preceding joints. 

 The presternum is large, flat, with a simple apical constriction, 

 obsolete basal lobe and evident suture, the coxae separated by two- 

 fifths their width. The legs are moderate, the femora dentate 

 beneath near apical third and the tibiae obtusely dentate externally, 

 the tarsi moderately dilated and with connate claws. Prothorax 

 very short, inflated, with very brief and feeble tubulation and large, 

 broadly rounded basal lobe, the scutellum free, glabrous, very 

 transverse and abruptly, deeply hollowed in more than median 

 third. The elytra are coarsely, deeply striate but not grooved, the 

 pygidium small, simple and subvertical and the first ventral suture 

 fine though evident throughout. The type is the following: 



