new Species of Histeride. 351 
short, bistriate, strie divergent before and behind, anterior 
lobe transverse, with the rim flavous; the mesosternum, 
lateral stria fine, interrupted anteriorly, transverse stria evenly 
crenulate and straight. 
T. opimus and T. bomba, Mars., are the largest species of 
Triballus known. 
Hab. Martapura, S.E. Borneo (Doherty, 1891). 
Note.—Since I formed the genus Jdolia (Ann. & Mag. 
Nat. Hist. 1885, xvi. p. 214) nearly a dozen species have been 
described, and it seems likely this number will be greatly 
increased. Some of the species exhibit the sternal sutures, 
and some possess specific characters similar to certain species 
of Triballus, so that I think now the two genera should be 
placed together. 
Trypeticus Dohertyt, Lew., Ent. Mon, Mag. 2nd ser. 
vol. 11. p. 186. 
There are three male examples (measuring 44 millim.) 
in Mr. Fry’s collection which I think are small specimens of 
this species. All the differences I see in them relate to size 
and to the want of the two thoracic elevations behind the ridge 
near the neck. ‘That this should be the case only corre- 
sponds to what we see throughout the Coleoptera, that 
sexual differences are more or less obliterated in small indi- 
viduals. There are a few genera in the Histeride in which it 
is quite as important for a describer to know both the sexes 
as it is in the Lucanide, but these genera are limited in number. 
The anterior angles of the thorax in the male of 7. Dohertyi 
are rectangular, and almost so in the female also. 
Trypeticus nemorivagus, sp. n. 
Cylindricus, parum robustus, niger, nitidus; pronoto angulis 
anticis haud rectangulatis ; prosterno rugoso-punctato, margine 
laterali valido. 
L. 3? mill. 
Cylindrical, rather robust, black and shining; the male, 
snout with shallow punctures, triangular, flat, margined with 
a carina, the forehead irregularly punctured between the eyes 
and microscopically strigose ; the female snout is impressed, 
not carinate, with two very small and not very distinct 
tubercles at the apex ; the thorax in the male parallel laterally, 
anterior angles rounded off, impressed near the eyes, rather 
densely punctured anteriorly, punctures on the disk and 
