SCOTT—COLEOPTERA; HYDROPHILIDA, HISTERID Ai 209 
The series consists of nearly 300 specimens ; some of the smallest are only 1 mm. long; 
some immature specimens are yellow. 
This. species is at once distinguished by the remarkable sculpture of the elytra and 
their basal boss, by the conspicuously explanate side-margins of thorax and elytra, 
and the form of the mesosternum. The plan of the elytral sculpture—alternate interstices 
being raised into carinee—recalls that of Oxyomus palmaruwm (see vol. xv. of these 
Transactions, p. 224, and Pl. 12, fig. 1). 
Loc. Seychelles. Silhouette: high forest near Mont Pot-a-eau, circa 1500 feet, 
VIII. 1908; many specimens, including one recorded as found between leaf-bases of a 
Roscheria palm, and one as found in a decaying fallen ‘‘ Bois Rouge” (Wormia). Mahé: 
high forest of Morne Blane and Morne Pilot, 1000—2000 feet (some specimens found 
between leaf-bases of a growing Stevensonia palm) ; high forest between Trois Fréres and 
Morne Seychellois, and slopes of Morne Seychellois, 1500—2000 feet ; Mare aux Cochons 
district, 1500—2000 feet; forest above Cascade Estate, 800—2000 feet. Praslin: 
Coco-de-Mer forest in Vallée de Mai, Cotes d’Or Estate, XI. 1908. 
11. Paronicrus thomasseti, sp. nov. (Plate 14, fig. 10). 
Oblongo-ovalis, nitidus, fusco-ferrugineus, marginibus suturdque pedibusque diluti- 
oribus; capite prothoraceque dense minutissime punctulatis, hoc lateribus solum ad 
angulos anticos explanatis; elytris lateribus minus late explanatis, haud carinatis, sat 
fortiter seriatim punctatis, intervallo quoque parum convexo et linea irregulari punctu- 
lorum minutorum munito, elevatione basali obsoleta; mesosterni parte elevaté aream 
latiorem, polygonam vel fere circularem, superficie in medio postice longitudinaliter 
carinato-elevata, formante. Long. corp. ca. 14 mm. 
Head very finely and closely punctulate, with a rather vague transverse impression, 
more or less developed, on either side between the eyes. Thorax with the lateral margins 
explanate only in front, and even there not broadly explanate, the disc very closely and 
finely punctulate, with a slight impression on either side of the middle at the base. 
Elytra with the side-margins explanate, more broadly behind, and a little less con- 
spicuously so than in P. carinatus; with regular series of fairly strong punctures, the 
interstices being slightly convex and bearing each an irregular line of minute punctures : 
carinze are quite absent, the alternate interstices being not more elevated than the rest, 
and a basal boss corresponding to that in P. carinatus is either absent altogether, or only 
a very slight trace of an elevation is visible. The elevated part of the mesosternwm 
(Pl. 14, fig. 10) is very differently formed from that in P. carinatus; it is broader in 
proportion to its length, polygonal, with the sides convergent behind, and with a sharply- 
elevated median longitudinal carnation on the posterior part of its surface. The scanty 
hairs on the under-surface appear a little longer than in P. carinatus, and the inter- 
mediate and posterior tarsi are shorter and stouter than in that species. 
Distinguished by its shiny surface, by the sides of the thorax being explanate only 
in front, by the absence of carinze on the elytra, and by the different form of the 
mesosternum. 
