188  Buackpurn anp SHarp—On some New Species and Genera of Coleoptera. 
Although, in My. Wollaston’s arrangement, these insects would, on account of 
their concealed scutellum and very short metasternum, be placed far from the 
genus Mesites, yet in their general structure they appear more similar to that 
genus than to any other known to me. 
D. 8. 
Heteramphus wollastoni, n. sp.—Latus, subplanatus, niger, subopacus, antennis 
tarsisque piceis; thorace majore, anterius angustato et subconstricto, crebre punc- 
tato, basi marginato, dorso: ante basin impresso; elytris seriatim punctatis, ad 
apicem attenuatis, in parte apicali plagis vagis setulosis. Long. (ine. rost.) 8-10; 
lat. 3 m.m. 
The surface of the thorax is a little irregular, and its punctuation is moderately 
close and coarse; the sides are very slightly narrowed at the base; the basal 
margin thick; elytra very truncate at the base, angulate at a distance from the 
sides, so that there is a broad pseud-epipleura, furnished with seven series of punc- 
tures, and two others at the sides, thatiis on the pseud-epipleura; the rather distant 
punctures are placed on very obsolete strive; the broad interstices are almost 
impunctate, and the third and fifth are much broader than the others; on the 
apical portion, there are some flavescent sete, placed in an irregular or patchy 
manner. 
The male has the rostrum broader and less cylindrical than it is in the female ; 
and its anterior portion (commencing just behind the insertion of the antennz) is 
just perceptibly dilated ; it is also more closely punctate, and less shining than in 
the female. 
This insect is found not very rarely in the stems of a plant called the ‘ silver sword,”’ in the moun- 
tains near Honolulu, at an elevation of 8000 feet, or more. 
Dass 
Heteramphus foveatus, n. sp.—Latus, niger, subopacus, antennis tarsisque 
piceis ; thorace majore, anterius angustato, lateribus rotundatis, crebrius fortiter 
punctato, basi obsolete marginato, dorso ante basin rotundato-foveolato ; elytris 
striatis, interstitiis ad latera et ad apicem parce setulosis. Long. (ine. rost.) 7; 
lat. 24 m.m. 
Similar to H. wollastoni, but abundantly distinct; rather smaller, with the 
thorax evidently rounded at the sides, and coarsely punctate, and only very 
indistinctly margined at the base. The elytra are somewhat deeply striate; and 
the striz are marked, especially on the basal portion, with coarse but indefinite 
punctures ; all the interstices are of nearly one width, and near the sides and apex 
are setulose. 
