GONICQELUS. 615 
Of this species we have received only a single specimen in a very bad state of 
preservation, but as it shows the extreme of the genus as regards narrow and parallel 
form, I have named it. It is less convex than G. crispatus and G. angustus, and I 
judge that the pubescence is much shorter; the example is, however, much worn. It 
is a male; there is a slight longitudinal elevation on each side of the front of the head, 
and between these elevations the space in the middle is longitudinally convex and is 
sub-tuberculate behind. ‘The antenne and legs are very short. ‘The thorax is nearly 
parallel-sided, very slightly narrowed in front; the hind angles are rectangular, sharply 
marked; the disc is rather coarsely and closely punctured, the intra-lateral sculpture 
and lines extremely indistinct; there is no anterior marginal line. Elytra very regularly, 
rather finely seriate-punctate. Metasternum with a very short channel behind. 
24. Gonicelus crispatus, sp. n. 
Angustus, oblongus, piceo-rufus, antennis pedibusque rufis, pube fulvescente, in elytris seriata, dense vestitus ; 
prothorace dorso crebre subtiliter punctato ; elytris seriatim subtiliter punctatis. 
Mas, capite utrinque crista valde elevata, in vertice intus crispata; prothorace margine anteriore medio leviter 
sed late producto, parte producta leviter emarginata. 
Long. 2? millim. 
Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion). 
This little insect is in the male sex readily distinguished by the strongly elevated 
crest on each side of the head, and by this crest being curled inwards at the summit; 
the surface between the elevations is depressed and not punctured. The female is 
destitute of these characters, the head being nearly flat and punctured in the ordinary 
manner. ‘The thorax is very little narrowed in front, transversely convex, less strongly 
transverse than usual, and with the coarse lateral punctuation much reduced. In 
addition to the serial punctuation of the elytra, there is a fine seriate interstitial 
punctuation. ‘The metasternal process between the middle coxe is strongly margined 
and the metasternum is canaliculate behind. 
25. Gonicelus angustus, sp. n. 
Oblongus, angustus, haud depressus, rufus, pube fulvescente vestitus; prothorace parum transverso, dorso 
crebrius punctato; elytris seriatim subtiliter punctatis. 
Long. 22 millim. 
Hab. Mexico, Cordova (Salé). 
‘Very similar to G. crispatus, but undoubtedly distinct, the metasternum being 
unchannelled, and there being numerous other slight distinctions. The unique 
example is a male, it having a slight longitudinal elevation on each side of the front 
part of the head, and the surface between these elevations is opaque and almost 
impunctate. The antenne and legs are very short. The thorax is scarcely narrowed 
in front, the hind angles are rectangular, the disc is rather closely punctured. There 
is nu anterior marginal line on the thorax; near the side there is a very fine elevated 
