180  Brackpurn AnD SHaRP—On some New Species and Genera of Coleoptera. 
Acalles ignotus, n. sp.—Brevis; nigro-cinereus, pedibus nigris, antennis, tarsis 
et tibiarum apice rufescentibus; setis nigris et cinereis intermixtis vestitus ; 
prothorace fortiter transverso, antice constricto, postice parum angustato, 5-sulcato, 
suleo medio carinam intrinsecus ferenti, lateribus postice fere rectis; elytris 
brevibus a latere fortiter rotundatis, obscure striatis, striis vix distincte punctatis, 
interstitiis 2°, 4°, et 6° fortiter regulariterque elevatis. Long. (rostr. inc.) 34 m.m. 
This insect is allied to A. duplex, Sh., but differs from it in being smaller, with 
the elytra very much more strongly and evenly rounded on the sides, and in the 
much less distinct striation and punctuation of the elytra, of which the elevated 
interstices, moreover, are not more elevated in one part than another (though they 
become less distinct at the apex). 
A single specimen was taken on Oahu, but the particulars of the capture have not been preserved. 
TBs 
Acalles decoratus, n. sp.—Sat elongatus; nigricans, setis nigris et cinereis 
intermixtis vestitus, prothoracis sulco-mediali squamis albidis dense vestito ; 
elytrorum sutura, fascia lata ante medium, macula pone medium, et apice, cinereo- 
albidis; rostro, antennis, tarsis et tibiarum apice rufis, femoribus cinereo-macu- 
latis; antennis sat brevibus funiculi articulo secundo quam primo multo minore ; 
prothorace vix transverso antice sat fortiter postice leviter contracto, a latere sat 
rotundato, obscurelongitu dinaliter sulcato sulci lateribus leviter elevatis; elytris 
fortiter striatis, interstitiis rotundatim convexis. Long. 3 m.m. 
Its diminutive size will distinguish this insect from most of its Hawaiian allies ; 
moreover, from A. ignotus its much larger thorax, and from A. mauiense the 
regularity of its sculpture, will at once separate it. 
A single specimen was obtained by beating branches of trees, at an elevation of about 2000 feet, on 
Lanai. 
Ab, 15}, 
The following observations are suggested by certain specimens of Acalles 
in my collection :— 
1. A. angusticollis, Sh.—I hesitate a good deal to regard as incapable of 
distinction specifically the two forms which Dr. Sharp includes under this name ; 
but, if they be identical, I think there will have to be included under the same 
name a specimen from Kauai, somewhat intermediate in size and having the ridge 
on the elytra less elevated; and also a specimen from Maui which (although it 
certainly appears to me narrower and more elongate, and has its entire upper 
surface densely and confusedly clothed with mingled ashy and black scales, and 
long setae) I cannot distinguish from the Oahu specimens attributed to A. angusti- 
collis—at any rate without removal of scales—by sufficiently strong characters to 
assure me that it is not merely a very fresh and brightly-coloured example of that 
insect. , 
