BLACKBURN AND SHARP—On some New Species and Genera of Coleoptera. 127 
Fam. CORYLOPHID. 
CorYLOPHUS. 
Corylophus rotundus, n. sp.—Latus, subrotundus, piceus, prothorace margine 
dilutiore, antennis pedibusque testaceis, nitidulus, elytris crebre sat fortiter 
punctatis. Long 14 m.m. 
This species, on account of its broad, round form, resembles C. tectiformis, 
Woll., but the sculpture of the elytra is quite different in C. rotundus. The 
antennz are stout; the thorax is shining, and is without sculpture, the pale 
explanate anterior margin conspicuous. The elytra have very distinct though 
not coarse punctuation, which is not aciculate, and their surface is quite shining. 
Honolulu. Dr. Horn informs me that this is not like the North American species of the genus. 
D.S. 
Corylophus suturalis, n. sp.—Rotundato-ovalis, convexus, nitidus, piceus, pro- 
thorace elytrorumque sutura rufescente, illius margine anteriore albido, antennis 
pedibusque testaceis, illarum clava fusca; elytris subtilius obsoleteque punctatis. 
Long. vix 1 m.m. 
Only half the size of C. rotundus, and of not quite so rotund form, and with the 
elytra obsoletely punctured ; their punctuation is, however, quite clear when a 
careful examination is made. Dr. Horn informs me the insect is of the size and 
appearance of the North American C. truncatus, but that species has the elytra 
almost absolutely smooth. 
Found at the roots of grass, Nuuanu Pate, Oahu. 
SERICODERUS. 
Sericoderus basalis, n. sp.—Latior, testaceus, elytris fascia lata basali nigra, 
crebrius pubescens, subtiliter punctata, subopaca. Long. 14 m.m, 
Antenne rather short, entirely pale yellow, club not stout. Thorax very 
broad, reddish yellow, very finely punctate, finely pubescent, the sides and front 
forming one quite continuous, regular curve. Elytra, densely punctate; pubescent, 
yellow, with a broad basal fascia occupying quite one-third of their area. 
A species readily identified by the broad form and distinct basal fascia. Dr. 
Horn informs me it is not like any of the North American species. 
Found in the salt marshes at Honolulu. 
1D} Ss. 
TRANS. ROY. DUB. SOC., N.S. VOL. III. TT 
