MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARLE. 405 
2. Terrisus HYDROPOROIDES. (Plate XXXV. fig. 10.) 
Depressus, oblongo-fusiformis, opacus, levissime aciculatim 0-18 breviter griseo 
pubescens, testaceo-ferrugineus; thorace medio longitudinaliter, scutello, elytris 
lateribus apice et interdum sutura versus basin fuscis vel nigro-fuscis. Long. 14-13 
lin., lat. 1 lin. 
Habitat in Borneo. 
Depressed, oblong-fusiform, opaque, very finely acicularly punctate, with very short 
and fine griseous pubescence, testaceo-ferruginous. In appearance, form, and colouring 
bearing a certain resemblance to some of the Hydropori (as 11. 12-pustulatus for example). 
Head with a large rounded fovea on each side of the epistome, which makes the middle 
appear raised. Labrum deeply bilobed, the lobes rounded instead of being conically 
shaped as in 7. Cholevoides. Mandibles with the double tooth at the apex somewhat 
larger than in 7. Cholevoides. Maxille and maxillary palpi as in that species. The 
membranous wing of the ligula sufficiently large and distinct, something of the same 
shape as the bunch of hairs which appears to be its substitute in 7. Cholevoides. The 
labial palpi of the same shape and proportions as in it, but larger. Antennse as in it. 
Thorax transverse, very smooth, equally and gently convex, narrower in front than 
behind, widest about one-fourth of its length before the posterior angles; apex emar- 
ginate, emargination rounded ; sides gently and regularly curved and slightly margined ; 
anterior angles obtuse, almost rounded; posterior angles obtuse and looking slightly 
backwards; base strongly bisinuate; disk fuscous. Scutellum rather broad, triangular, 
margin smooth, rest finely acicularly punctate, fuscous. Elytra depressed, rounded from 
the base, widest about the middle, attenuated behind, sides margined; exterior angles at 
the base obtuse, pointed; exterior apical angles rounded, sutural apical angles obtuse; 
apex of each elytron very obliquely truncate; the disk ferrugineo-testaceous, with the 
apex and sides dark fuscous, and the basal fuseous part twice as broad as the part 
between it and the apical fuscous band; the suture at the base sometimes fuscous. 
Abdomen usually wholly ferrugineo-testaceous, in some individuals a little darker towards 
the margins of the an. Underside testaceous, palest in the middle. Legs ferru- 
gineo-testaceous. م‎ 
This species certainly belongs to the same genus as T. UI AASEN it is 50 
much larger and differs in the membranous wings of the ligula. The general facies is 
similar, and its other characters nearly identical. It forms the passage between 7. Chole- 
voides and the genus Trimenus. 
em From Borneo. Collected. by Mr. Wallace. 
Genus TRIMENUS (Motsch.). 
Corpus latum et depressum. Oculi sat magni, basin capitis attingentes. Sulci antennarii breves, conver- 
gentes. Labrum bifidum. Epistoma porrectum. Elytra longa, lata, haud striata. Abdomen duo- 
r.... bus segmentis supra expositis, pygidio majore; segmentis omnibus (pygidio excepto) fere aqualibus ; 
fimbriis parvis. 
Body broad, flat, and ice Eyes large and coarsely granulated, reaching to the 
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