Lamellicorn Coleoptera of Larat Island. 495 
Three males and two females of this were found by 
Mr. Muir. The sculpture of the elytra is quite peculiar and 
unlike that of any other species known to me. There is a 
microscopic reticulation of the surface, which, in the male, 
where it is rather less fine than in the female, produces a 
semiopaque effect, at least upon tle inner part. ‘The sutural 
and alternate intervals bear smooth shining carine along the 
middle, interrupted at intervals by large punctures bearing 
minute erect bristles. The intervening flat intervals also 
bear rather more numerous bristle-bearing punctures, and 
the head and pygidium are clothed with longer and more 
conspicuous, though very scanty, erect bristles. The pro- 
notum is moderately convex, unarmed and simple in both 
sexes, but less strongly punctured in the male, and the vertex 
in the latter sex bears‘two straight separate horns inclined 
backwards. 
IDIAPOGONIA, gen. nov. 
Corpus parvum, paulo elongatum. Oculi modice prominentes. 
Clypeus haud brevissimus, antice fere rectus, lateraliter rotun- 
datus, sutura leviter curvata. Antenne 8-articulate, articulo 2° 
globuloso, 3° et 4° minutis, elongatis, 5° conicali, 6°-8° lamellatis, 
lamellis brevibus. Labrum sat magnum, valde emarginatum. 
Mandibule breves, apice acuminate. Maxille crasse, apice 
vaide 5-dentate, palpis simplicibus. Mentum elongatum, 
oblongum, extus valde convexum, apice emarginatum, palpis 
geniculatis, articulo penultimo valde arcuato. Epimera meta- 
thoracica triangulares. Cox intermediz oblique. Tibie 4 
posteriores breves, extus carina setigera munite. ‘arsi subtus 
pilosi, articulo primo longo. Ungues appendiculati, haud fissi, 
intus pulyillo late lobato et piloso instructi. 
¢. Tarsi antici et intermedii dilatati, subtus dense pilosi. Elytra 
pruinosa. 
Idiapogonia laratina, sp. n. 
- Nigro-picea, corpore subtus rufescenti; modice convexa, clypeo 
grosse et crebre punctato, margine reflexo, vix sinuato, fronte 
prothoraceque fortiter punctatis, hujus lateribus arcuatis, angulis 
anticis acutis, posticis obtusis, basi leviter trisinuato; scutello 
punctis minutis nonnullis preedito elytrisque distincte equaliter 
et sublineare punctatis; pygidio grosse et subrugose punctato, 
flavo-setoso ; tibiis anticis bidentatis. 
Long. 6°5-8 mm.; lat. max. 3°5-4 mm. 
A male and two females were collected by Mr. Muir. 
This little insect has many peculiar features which separate 
it rather widely from all other known genera. ‘The great 
