LeCoute.] 



BARIXI. 317 



horn; })eak mor3 distinctly punctured and striate. Varies with the horns 

 shorl. 



9. Prosternum flattened, but without horns; Leak smonther, punctured 

 towards the base. 



Two larger sp:'cimens from Florida have the prothorax less densely punc- 

 tured, and the fiftli ventral as long as the third and fourth united; in the r^ 

 the horns are merely short acute cusps. They may indicate a disJnct 

 species, but I pr.'fer not to d.?finj it as such for the present. 



24. O. prolixus, n. sp. 



El.>ngat(', shining black, with a slight bronzed lustre, nearly glabrous 

 above. Beak slender, slightly curved, as long as the protlu)rax; frontal 

 impression wanting. Prothorax as wide as long, narrowed in front tyid 

 rounded upon the sides, broadly but not deeply constricted in front; disc less 

 convex than usual, sparsely punctured. Elytra very elongate, parallel, con- 

 jointly rounded at tip; strise fine, interspaces wide, with small distant fine 

 punctures; disc vaguely impressed behind the base. Beneath slightly pubes- 

 cent, not deeply punctured, prosternum broadly concave, with a small square 

 impression near the tip; front coxai not widely separated; metathoracic side 

 pieces narrow ; ventral segmens very sparsely punctured; fifth as long as 

 the third and fourth united. Funicle of antennae rather slender, second 

 joint hardly longer than third. Length 4 mm.; .15 incli. 



Massachusetts and Illinois; tliree specimens. Somewhat r sembles G- 

 rectirotitris, but is smaller, and quite different by the characters given 

 above. 



25. C. confinis, n. sp. 



This species exactly resembles C- concinnu>i in size, form and sculpture, . 

 but difiei's by the finer pubescence, which is almost inconspicuous on the 

 upper surface, and by the prosternum having one small but deep round 

 fovea near the tip, instead of two approximate ones. Length 2.3 mm.; 

 .09 inch. 



New York; one specimen. 



ZYG-OBAKIS n. g. 



Body resembling in form a small rolnist Centrinus Ce. g. picumnus), but 

 very coarsely sculptured and not densely clothed with scales. Beak as 

 long as tiie head and prothorax, slender, cjdindrical, curved; not trans- 

 versely impressed at the base; antenTial grooves commencing nearly one- 

 third from the tip, descending obliquely; eyes rather large, transverse, not 

 convex, finely granulated, front not wider than the beak ; liead rather 

 small. Antennai with the first joint of funicle elongate, and stou*er than 

 the second; 2-7 gradually stouter, merging into the club, which is elongate- 

 oval, pointed, pubescent and regularly annulated, the basal joint not being 

 undulj" large. Prothorax stronglj^ narrowed in front, feeblj' constricted, 

 and wi'hout postocular lobes ; base Insinuate ; prosternum long in front of 

 the coxaj, which are widely separated, impressed near the front margin. 



