BLACKBURN AND SHARP—On some New Species and Genera of Coleoptera. 153 
The last four species of Fornax described above have the following characters 
in common :—Head, vertical; clypeus, trapeziform; prosternal sutures uniting 
in front with the margins of the prothorax; margins of the prosternum 
furnished with antennal furrows; no lamelle to the tarsi; antenne simple ; 
joints one, three, and eleven longer than the rest. In F. obtusus and F. longi- 
cornis (the two species from Maui) the basal lobes of the thorax are much longer 
and broader than in the other described Hawaiian species, and the thorax is much 
more convex longitudinally, and is very decidedly wider than the elytra. 
Fam. ELATERID. 
EoPENTHES (noy. gen.). 
The structure in these insects is very similar to what exists in Elater and 
Megapenthes, but the head in front is broadly and gently rounded, not at all 
produced or angulated, and it is separated from the labrum by an extremely 
small but very abrupt interval; the prosternal sutures are nearly flat in 
front and not open; the posterior portion of the mesosternal cavity is subper- 
pendicular ; the legs and coxe are formed much as in Elater; the tarsi are quite 
slender ; the angle of the coxal lamina acute; second and third joints of the an- 
tennze short. 
D.S. 
Eopenthes basalis, n. sp.—Niger, antennarum elytrorumque basibus pedibusque 
rufo-testaceis, tibiis in medio obscuris, tarsis nigricantibus; capite thoraceque dense 
fortiter punctatis, tenuiter pubescentibus, hoc angulis posterioribus acute carinatis ; 
elytris profunde striatis, striis punctatis, interstitiis parce punctatis et tenuiter 
pubescentibus. Long. 11 m.m. 
Antennz not reaching so far back as the hind angles of the thorax, black; the 
three basal joints reddish yellow; second and third joints short, equal; thorax 
narrowed from the base to the front in nearly a straight line; the carina of the 
hind angle much raised above the lateral margin ; punctuation dense, so that the 
surface is quite dull. The basal pale fascia of the wing-cases interrupted at the 
suture, and only occupying about one-sixth of their length; apices quite acumi- 
nate. Prosternal process not curved upwards behind the coxe, and bearing a very 
abrupt angle. 
Elater humeralis of Karsch, Berl. Ent. Zeit. xxv., p. 5, is no doubt congeric 
with this insect, and probably closely allied to it. 
The unique individual described was sent by Mr. Blackburn as No. 823, found in the mountains near 
Honolulu. 
IDs {sis 
Y 2 
