SCOTT—COLEOPTERA ; HYDROPHILIDA, HISTERID”% 197 
sinuatis, angulis posticis argutis fere rectis, margino antico zque lato ac basi, marginibus 
lateralibus tenuiter crenulatis, disco fortiter dense punctato, utrinque ad latera, antice 
fortius, impresso: elytris sat curtis, in parte media quam prothorace latioribus, apice 
separatim rotundatis et sutura dente minuta instructa, marginibus lateralibus explanatis, 
arcuatis ; sat fortiter dense seriatim punctatis, intervallis angustis (zeque latis ac seriebus), 
planis, nullo modo elevatis. Long. corp. circa 14 mm. 
General colour brownish-testaceous: head darker, almost black; pronotum with a 
roughly rectangular transverse median area darkly infuscate, and the margins rather 
widely ferrugino-testaceous ; elytra brownish-testaceous ; antennee, palps, legs and feet 
testaceous. Head: pre-frons finely punctured, nearly smooth in the middle, post-frons 
more strongly punctured: fronto-antennal suture nearly straight: labrum large and 
bilobed : maxillary palpi very long, jomt 2 very long, about as long as 3 and 4 together, 
curved outwards, very slender from the base to nearly ? of its length, slightly swollen 
in its apical portion ; joint 3 slender at the base, in its distal half about as swollen as 
the apex of 2; joint 4 about 14 times as long as 3, more swollen, convex on the inner 
side and nearly straight outwardly : antennze with joint 2 as broad as the apex of 1, 
joint 3 very minute, almost invisible, 4 produced inwardly into a finely-pointed process, 
club 5-jointed and pubescent. Pronotwm transverse, having its greatest breadth at 
a point about the middle, with the sides slightly narrowed in front of this poimt to 
the anterior angles, which are rounded ; with the sides behind the widest point more 
strongly narrowed, and sinuate in such a way that the posterior angles are definite 
and nearly right angles: width of anterior and posterior margins about equal, that 
of the anterior greater than that of the head and eyes: lateral margins finely crenu- 
late: disc closely and strongly punctate, much more strongly than the head; with 
an impression on either side quite near the lateral margin, broader and more marked 
in front, gradually narrowing towards the posterior angles. Scutellum visible but 
minute. Hlytra about 24 times as long as the pronotum, with lateral margins curv- 
ing outwards from the base, so that a little behind the shoulder the elytra become 
considerably broader than the pronotum even at its broadest point: lateral margins 
explanate, very finely crenulate near the shoulder and near the apex, the crenulations 
much less close than on the thorax: apices separately rounded, with a minute tooth 
present at the apex of the sutural margin: each elytron bears about 15 or 16 series 
of punctures, 9 of which lie between the humeral callus and the suture: the punctures 
are about the same size as those on the thorax, in each series separated from one another 
by about their own diameter; while the intervals between the series are about the 
same width as the series themselves and not at all raised or convex. From each 
puncture rises a minute pale procumbent hair, not easily visible: some such hairs 
are also visible on the head and thorax. The nature of the punctuation is such that 
its serlate arrangement is not always very apparent. 
Beneath, the body is covered with pale pubescence. There are no raised ridges on 
the metasternum; but in the one specimen examined the pubescence is thinner on two 
longitudinal areas, one on either side of the middle line of the metasternum. In this 
specimen also the 5th abdominal segment and part of the 6th appeared nearly bare 
SECOND SERIES—ZOOLOGY, VOL. XVI. 26 
