SESW aD 
406 MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARLE. 
base of the head.  Epistome projecting. Labrum deeply bifid. Antennal grooves short, 
converging. Antenne rather long and slender, except the club: first article dilated on the 
outer side; second stout, rather long; third not so stout, but nearly twice as long as the 
second, subcylindrical ; fourth and fifth equal, each a little shorter than the third ; sixth, 
seventh, and eighth submoniliform, short, slightly and gradually increasing a little in 
width ; ninth, tenth, and eleventh forming a large, oval, flat club. Mandibles bidentate; 
the apical tooth chisel-shaped, inner side bearded behind the second tooth. Maxille 
short, bearded on the inner side (Pl. XXXVI. fig. 4f). Maxillary palpi cylindrical, with 
the first article small, second large, third shorter, fourth longest and cylindrical. Labial 
palpi with the first article very small, second a little larger, unequal, third broad and 
securiform. Ligula small, short, somewhat conical, with large, spherically triangular, 
membranous united lobes or wings projecting from the anterior angles (Pl. XX XVI. 
fig. 4e). Mentum biemarginate, with a broad projecting tooth in the middle. Thorax 
flat and transverse, margined. Scutellum moderate, subtriangular. Elytra broad, flat, 
narrowed and rounded-in towards the apex, margined. Abdomen above with only 
the pygidium and a portion of the penultimate segment exposed; below with all the 
segments about equal in length, the last segment a little the longest, and the first next 
longest; the fimbrize small, but distinct; pygidium pointed.  Prosternum flat, widened 
behind, resting on the mesosternum. Metathorax without axillary pieces. Legs stout; 
thighs canaliculated to receive the tibiæ; middle tibiæ bent and excised near the apex 
on the inner side in the males. Tarsi moderate. 
; ECNOMAEUS. 
Position and Affinities.—TETRISUS. TRIMENUS. EPUREA. 
SOMAPHORUS. 
1. TRIMENUS ADPRESSUS. (Plate XX XVI. fig. 4.) 
Subovatus, antice parum latior, sat latus, valde depressus, crebre leviter punctatus, bre- 
viter sat dense testaceo pubescens, rubro-ferrugineus. Long. 2-21 lin., lat. 1-12 lin. 
Habitat in Borneo, Aru, &c. — 
Rather broad, subovate, somewhat narrowed behind, very much depressed ; very thickly 
punetured so as to seem finely shagreened, clothed with a rather close, short testaceous 
pubescence; ferruginous red. Head with a shallow impression on each side in front 
behind the base of the antennæ. Thorax once and a half as broad as long, narrower 
in front than behind; sides very narrowly margined, posteriorly somewhat parallel, 
rounded-in towards the apex, which is emarginate; anterior angles obtuse, posterior ` 
angles right angles; base truncate, slightly bisinuate. Scutellum moderate in size, tri- 
angular. Elytra about twice the length of the thorax, with their base equal in breadth 
to the base of the thorax ; sides parallel for two-thirds of their length from the base, then 
rather rounded-in to the apex, which is attenuated, flat, and truncate nearly straight; 
the sides are broadly margined and canaliculated, the margin slightly extending round 
the shoulder and not reaching to the apex; underside of margin broad; the exterior 
basal angles somewhat obtuse, the exterior apical angles rounded, the sutural apical 
