490 JOURNAL OF SCIENCE. 
distinct. lytra very elongate, puite parallel, not quite so broad 
as thorax. Legs rather short and stout ; femora moderately in- 
flated ; ¢2bze@ sub-triangular, with terminal hooks. Four anterior 
coxe small. with obvious cavities ; all three pairs distant. Pyvo- 
sternum large, truncate behind. JMesosternum and metasternum 
convate, without the least trace of suture, conjointly, very elon- 
gate. Addomen long, its two large basal segments not disttnctly 
separated, the next three sutures profound. Sody linear and 
depressed. 
This genus is intended for the reception of Pentarthrum wol- 
lastonianum and debile, as these two species cannot be satisfac- 
torily referred to Pentarthrum. The above diagnosis has been 
taken from the male of the former species ; in the other sex the 
rostrum is more elongate, and the apical and antennal dilata- 
tions are less evident. 
Agastegnus, n, gen.— Rostrum of moderate length, slightly and 
eradually dilated anteriorly among the males, nearly cylindric in 
the other sex. Aztenne clongate ; scape flexuose, and gradually 
incrassated ; funiculus 5-articulate, 2nd joint longer than 3rd.; 
club ovate, moderate: they spring from just before the middle 
of the beak. Head immersed nearly to the eyes, not contracted 
behind. yes oviform, distinctly facetted, flat. Prothorax 
almost triangularly ovate, narrowed and constricted in front. 
Scutcllum small but distinct. AZytra rather broad, sub-depressed, 
sub-parallel. Legs long; thighs moderately inflated ;  tibize 
flexuose, with terminal hooks; tarsi elongate, their three basal 
joints short and broad ; penultimate sub-bilobed, the terminal 
equalling the other three. Anterior core distant. Body pilose. 
Differs from Pentarthrum and Sericotrogus in having long 
legs, a short head, and depressed eyes, whilst the form of the 
antennal club separates it from MZacroscytalus, to which it is, on 
the whole, most nearly allied. 
Besides the typical species it includes Nos. 922 and 930, 
which must accordingly be named A. gratws and A. longipes. 1 
have a specimen of Dr. Sharp’s Sericotrogus simulans, or what I 
believe to be one. If I have judged correctly it belongs to this 
genus, but as the author does not allude to “long legs and flat- 
tened eyes,” it must be considered doubtful at present. 
1432. Agastegnus ruficollis, n. sp.—Slender, moderately elon- 
gate, sub-depressed, clothed with fine elongate yellowish hairs ; 
beak and thoracic disk rufescent, elytra and legs piceous, the 
latter darker ; antennee testaceous-red, the club and tarsi pitchy- 
red. | 
Rostvum shorter than thorax, not broad, gradually expanded 
towards the extremity, nude, shining, sparingly and finely punc- 
tured. Head more coarsely punctated, pubescent. Pvrothovax 
longer than broad, sub-depressed, constricted and narrowed in 
front, obtusely rounded behind the middle, leaving an evident 
gap between it and the humeral angles, moderately coarsely but 
not very closely nor rugosely punctured, the intervals between 
the punctures very minutely punctulated. Scwutellum smooth, 
