CHAMPION—-COLEOPTERA ; CURCULIONIDA 487 
commonest Cossonids in the mountain forests of the Seychelles. The broad, flattened, 
subquadrate, alutaceous rostrum, the laterally-placed, rather prominent eyes, the short, 
seven-jointed funiculus, the small antennal club, the strongly sculptured elytra, the widely 
separated cox, the broadly flattened prosternum, &c., are characteristic. It does not 
seem to come very near any of the genera described by Wollaston. The flattened, still 
broader rostrum, the small eyes and antennal club, &c., separate Tetragonorrhamphus 
from Coptus, near which the genus can be placed. 
120. Tetragonorrhamphus tuberculirostris, n. sp. (Pl. 24, figs. 46, 46a, 3.) 
Varying in colour from piceous to ferruginous, the elytra often rufescent in dark 
individuals, the antennz and tarsi always ferruginous, moderately shining. Head and 
rostrum densely alutaceous, rather dull, closely, very minutely punctate, the rostrum as 
broad as long, a little narrower and more shining in ?, rounded at the anterior angles, the 
head triangularly depressed or flattened, or shallowly foveate, between the eyes, the 
depression in the larger examples preceded by two transversely-placed minute tubercles 
(fig. 46a). Prothorax a little longer than broad, oblongo-conie, rapidly narrowing forwards 
and rounded at the sides posteriorly, the apical constriction feeble, lateral, leaving a short 
collar-like margin on each side ; the surface with an excessively minute dense punctuation 
intermixed with scattered more conspicuous punctures. Elytra moderately long, depressed, 
about as wide as the prothorax, subparallel in their basal half; crenato-sulcate, the 
interstices narrow, convex, rugulose. Beneath with an excessively minute punctuation 
intermixed with scattered coarser impressions; the prosternal depression distinctly 
margined laterally, transversely-strigose. 
Length 2—3 mm. | 
Loc. Seychelles: Mahé, Silhouette, Praslin, Félicité, Marie Anne. 
Upwards of 100 examples of this insect were captured by Mr Scott, showin 
considerable variation in size and colour. The broader, more robust individuals, with 
a subopaque, minutely bituberculate rostrum, are assumed to be males. No other 
Cossonid is known to me possessing the last-mentioned character. 
Mahé: a number of specimens were found under bark of fallen and rotting trunks 
of “Bois Rouge” (Wornuia ferruginea) in the high forest behind Trois Fréres, 1500— 
2000 feet ; it was also found near Morne Blanc, in the Mare aux Cochons district, and the 
forests above Cascade (including summit of Mount Sebert). Silhouette: it was found in 
the forests near Mont Pot-d-eau, ca. 1500 feet, and above Mare aux Cochons (two 
specimens being recorded as from fallen “Bois Rouge”). Praslin: several were taken 
in the Coco-de-mer forest in the Vallée de Mai. In Félicité and Marie Anne specimens 
were found in a drier type of forest near sea-level, composed of Calophyllum Inophyllum 
(“Takamaka”), Terminalia catappa and other trees. 
Coptus. 
Coptus Wollaston, Trans. Ent. Soc. Lond., 1873, pp. 492, 578. 
Wollaston included two small Malayan forms under this genus. A single species has 
now to be added from Mahé. 
