598 • 



in the male is also a very unusual feature, though it occurs in 

 the allied genus Rhopalonicsites. 



Cossonus limbaticollis sp. u. 



Color shiny black, the apex of the rostrum, the antennae, legs and 

 markings on the body red-brown ; the pronotmn with a broad ill-defined 

 red-brown stripe on each side; the elytra each with a broad indefinite 

 strii:)e from the base to the middle, lying between stria '2 and the 

 shoulder at the base and gradually narrowing behind, and with a faint 

 red-brown spot near the apex; the metasternum with a large red-brown 

 patch on each side. 



Head with the vertex not markedly separated off from the forehead; 

 the latter with a deep central fovea and fine sparse punctures, those 

 on the vertex even smaller and much nu)re distinct. Eostnun less than 

 half the length of the pronotum (2:5), quite cylindrical, slightly curved, 

 and very finely and sparsely punctate. Pronotum as long as broad, with 

 the sides gently rounded, broadest much behind the middle, scarcely con- 

 stricted at the apex, and without any trace of a transverse furrow; the 

 basal margin deeply bisinuate, and just within it a deej) lunate impression 

 on each side of the middle line ; the disk not impressed, fairly evenly 

 set with small widely-spaced punctures, leaving an ill-defined impunctate 

 strip from the base to beyond the middle, the lateral punctures closer 

 and slightly larger than those on the disk. Elytra suboblong, elongate, 

 parallel-sided from the shoulders to beyond the middle, and more 

 broadly rounded at the apex than usual; the striae shallow, especially 

 towards the sides, with rather widely-spaced punctures, which become 

 much smaller behind; stria 10 deep and strongly punctate from 

 the base to the hind coxa, there ceasing abruptly and continued as a 

 row of minute punctures for the length of the first ventrite, then 

 increasing in size and merging into a common furvo^v with stria 9; the 

 intervals a little broader than the striae, slightly convex, and almost 

 impunctate. Length, 4 mm. ; breadth, 1.25 mm. 



Habitat. — Tutuila Island: One female, eastern end of island, 

 1070 feet (Dr. H. C. Kellers). 



Type in the collection of the Hawaiian Sugar Planters' 

 Experiment Station. Type No. 1030. 



Stereoderus binodifrons sp- "• 



Female. Color shiny black, with the sides and lower surface of 

 the rostrum, the antennae, the tarsi and the apical margin of the 

 venter red-brown. 



Head minvitely coriaceous, evenly set with fine distant punctures and 

 with an indistinct median longitudinal depression ; the forehead with 

 a small raised area in the middle bearing two closely placed rounded 

 granules. Eostrum very short, as usual, sculptured like the head, with 



