195 
New Species of Exotic Insects. 
Genus Cepiialelus, Percheron. 
This genus was characterized by M. Percheron in Guerin’s 
Magasin de Zoologie, and as it was founded upon a single species, 
it is not remarkable that his definition is in one point too close to 
admit of some other species which evidently belong to the same 
natural group. 1 allude to the comparative length of the elytra : 
these in the species described by M. Percheron are shorter than 
the abdomen ; he has therefore inserted this character into the de- 
finition of the genus, whereas it would appear from the circum- 
stance of my possessing two new species in which the elytra are 
longer than the abdomen, it ought rather to be looked upon as a 
specific character. 
Cepiialelus marginatus. 
C. pale brown. Elytra with the outer margin pale yellow, 
joined internally by a long blackish streak. Head much 
elongated anteriorly, and produced almost to a point. 
Long. corp. 4 — lin. 
Var. /3 dark brown. Elytra inclining to black towards the 
outer margin ; the margins pale testaceous. 
Var. y uniform pale brown. 
Hab. King George’s Sound. 
Cepiialelus brunneus. 
C. pale brown. Head with anterior produced part rather 
broad and rounded. 
Long. corp. 5 — 5| lin. 
Hab. near Sydney. 
Obs. — These insects appear to vary much in size. I have 
examined several specimens of each of the species here described, 
and find that the most ready character for distinguishing them 
consists in the form of the anterior produced part of the head. In 
C. marginatus this portion is narrower, and consequently more 
pointed at the apex. In following the outline from the eye to the 
apex of the process, the line bends slightly inwards, so that to- 
wards the apex the two sides are nearly parallel. Then if we 
take a transverse section of this part of the head, we shall find 
the outline forms almost an oval but flatted beneath. 
In C. brunneus, if we take the same section, we find the outline 
rounded above and concave beneath, nearly resembling the form 
of the new moon. In following the outline from the eye to the 
apex of the anterior portion of the head, the line is straight on 
each side, but converging gradually towards the apex, which part 
is rounded and broader than in C. marginatus. 
