BLACKBURN AND Suarp—On some New Species and Genera of Coleoptera. 185 
Brachypeplus apertus, n. sp.— Angustior sat convexus, viridescens, parce 
pubescens ‘nitidus, antennis rufescentibus, pedibus testaceis; fortiter punctatus, 
prothorace transversim convexo, «quali, lateribus tantum prope angulos poste- 
riores explanatis. Long. 31, lat. 1+ m.m. 
So far as I can judge from one specimen, much rubbed and in bad condition, 
this is a species closely allied to B. celatus, but narrower, more convex, and more 
shining, and with the dorsal segments of the hind body less punctate, and yel- 
lowish behind. This specimen has the apical dorsal plate a little sinuate at the 
side behind, so as to make the apex appear a little prolonged, the hind margin 
being gently rounded, nearly truncate. Mr. Blackburn informs me that the other 
sex has the hind margin semicircularly emarginate, so that it would seem the 
sexual characters are much the same as in B. celatus. 
B. apertus, Sh., may be distinguished from all the four species preceding it 
above by its much coarser punctuation, especially by the greater coarseness of the 
punctures that form rows on the elytra. B. celatus, Sh., by its depressed form 
and less abrupt upward curve of the prosternal process. 
Found in the same locality as B. celatus. 
D.S. 
Brachypeplus quadraticollis, n. sp.—Haud latus, convexiusculus, nitidus ; 
castaneus, supra zneo-micans ; prothoracis lateribus, pedibus, antennarumque basi 
testaceis; capite prothoraceque crebre fortiter punctatis; hoe parum transverso, 
antice leviter angustato, ad angulos posteriores minus deplanato, lateribus parum 
rotundatis, angulis posticis subrectis ; elytris longioribus, distincte striatis, postice 
confuse punctatis, striis obscure punctatis, interstitiis subconvexis seriatim punc- 
tatis abdomine crebrius fortiter punctato. Long. 41 m.m. 
This pretty little insect superficially resembles the species of the B. protinoides 
group, but the form of the prosternal process (which I quite agree with Dr. Sharp 
in considering a character of the first importance) would associate it with B. disce- 
dens, Sh. Its convex form, very evidently (almost deeply) striated elytra, and 
subquadrate thorax are quite sufficient to distinguish it from all its allies. It 
should be placed, I think, at the head of the B. discedens group. 
In the male the apical dorsal segment has an obscure depression near the hind 
margin, and the additional segment is only slightly visible. 
The female is unknown to me. 
A single specimen occurred on a flower of Freycinetia on Mauna Loa, Hawaii, at an elevation of 
about 4000 feet. 
TB: 
Brachypeplus parallelus, n. sp.—Sub-parallelus, elongatus, subdepressus, 
pubescens ; parum nitidus; obscure viridizeneus, antennis pedibus et prothoracis 
lateribus testaceis; capite prothoraceque crebre fortiter punctatis; illo sat magno; 
TRANS. ROY. DUB. 800., N.S. VOL. 1. U 
