462 PERCY SLADEN TRUST EXPEDITION 
joints 2—5 of the funiculus strongly transverse. Prothorax about as long as broad, 
convex, subtrapezoidal, constricted immediately before the apex and also at the 
base (as seen from above), the base distinctly margined; densely, moderately coarsely 
punctate, except along a narrow, smooth, abbreviated median line. Scutellum transverse, 
small. Elytra barely twice the length of the prothorax, and of the same width, very 
gradually narrowing from the base, the apex produced and narrowly explanate, the 
seventh interstice also subangularly dilated externally towards the tip ; crenate-striate, the 
interstices convex, transversely rugulose, and irregularly uniseriate-punctate. Beneath 
alutaceous, rather finely punctate; metasternum sulcate. Anterior tibiz strongly 
sinuate. Tarsi with joints 1—3 rather stout, 3 wider than 2 and feebly bilobed. 
Length 24—3,, mm. (¢ %). 
Loc. Seychelles: Mahé. 
Four specimens, sex not definitely ascertained. These were found on Cascade Estate, 
at about 800—1000 feet. 
HyYPorENTARTHRUM, n. gen. 
Rostrum curved, subcylindrical, subangularly dilated between the points of insertion 
of the antennse, more slender in ?, the antennz inserted at (¢) or behind (2) the middle, 
the scrobes inferior, short, not reaching the eyes; head small, short, sharply constricted 
behind the eyes, the latter small and moderately prominent ; antennze with a 5-jointed 
funiculus and a small club, the scape thickened in ¢; prothorax oval, greatly developed, 
wider than the elytra in both sexes, constricted immediately before the apex ; scutellum 
small; elytra moderately elongate, punctato-suleate; cox: small, widely separated, 
anterior pair more distant than intermediate pair; prosternum broadly flattened ; 
metasternum long ; first ventral suture distinct, smuate; tibize feebly unguiculate ; tarsi 
short, rather stout, third joint feebly lobed, the claws long; body subfusiform, 
subdepressed, glabrous: species small. 
Type, H. microcephalum. 
The single species included in this genus is nearly related to Pentarthrum, differmg 
from it in the unusually small head, the long, subcylindrical, moderately stout rostrum, the 
greatly developed prothorax, the broadly flattened prosternum, the very widely separated 
anterior coxe, and the feebly unguiculate tibize. The head is so small that the eyes, at 
first sight, appear to be inserted at the sides of the rostrum. The insect is attached to 
the Coco-de-mer palm (Lodozcea). 
85. Hypopentarthrum microcephalum, n. sp. (Pl. 24, fig. 438, 2.) 
Moderately elongate, rather broad, subfusiform, somewhat convex above, broadly 
flattened down the middle beneath, shining ; nigro-piceous, the antennze and legs piceous, 
the base and club of the former and the tarsi ferruginous. Head and rostrum densely 
punctate, the latter smoother in ?; rostrum (¢) about two-thirds the length of the 
prothorax, moderately stout, (?) much longer and rather slender ; antennze with a stouter 
scape in g than in ¢. Prothorax longer than broad, a little wider than the elytra ; 
