. 
| 
Mr. Hope’s Descriptions, &c. 281 
brought to this country by Mr. Fortnum, and is now added, with 
a short description. 
@. Castanea nitida, clypeo punctulato, margine anterior! vix 
emarginato; thorace nigricanti, angulis anticis et posticis 
rotundatis ; elytrisque rude punctato-striatis. 
Long. lin. 8, lat. lin. 5. 
Fig. 7a, antenna; 7b, mandible; 7c, maxilla; 7d, instrumenta 
labialia. 
SemanoptErus,* Hope. (Pl. XIX. fig. 8, and details.) 
Novum genus. ‘Type S. 4delaide, Hope. 
Caput antice rotundatum, medio cornutum. Mandibule robuste, 
obtuse et hirsute, (fig. 8a). Mavxille apice 3 dentate, 
dentibus acutis, (fig. 86). Palpi maxillares 4 articulati, 
Imo brevi minimo, 2do robustiori, 3tio obconico, ultimo 
elongato ovato. Mentum medio dilatatum, antice contractum 
et emarginatum, (fig. 8c). Corpus fere oblongum subde- 
pressum, elytris thorace vix latioribus. Pedes validi; tibiis 
externis 3 dentatis, dentibus acutis. 
The above insect from Adelaide appears to be a form peculiar 
to New Holland. In habit it approaches Cheiroplatys, from which 
it may readily be distinguished by the elevated lines on the elytra, 
as well as in its general sculpture. It possesses the grooved thorax 
of Cheiroplatys, and seems to approach Philewrus. 1 suspect that 
both sexes have the thorax hornless. It is found under dead bark 
in Adelaide, and has not yet, I believe, been taken alive. 
Sp. 1. Semanopterus Adelaide, Hope. (Pl. XIX. fig. 8.) 
Niger, clypeo brevi cornu armato, sub lente vix punctato. 
Thorax glaber, convexus, in medio sulcatus, sulco sparsim 
punctulato. Elytra postice magnitudine parum increscentia, 
quibusdam lineis elevatis politis signata, interstitiis punctu- 
latis, punctis triplice serie impressis; latera scabriuscula. 
Corpus infra piceum, pedibus ciliatis, podice rufescente, 
tenuissime punctato. 
Long. lin. 103, lat. lin. 6. 
In Mus. Dom. Hope. 
It was brought to England by Mr. Fortnum, and found dead 
under the bark of trees. 
* From onjaavo and mrepov. 
