INSECTA COLEOPTERA. 
205 
but the reporter is of opinion, that the difference is too considerable for 
the Brenthides, which have hitherto been considered as a totally ano- 
malous member of that family, to be farther united with it. 
A plate of Cephalobarus macrocephalus, Sch. (9), has been given 
by Labram and Imhotf (Gatt. der Riisselkafer, 10 Lief.) 
CoLYDii. — Several new genera have been characterized ; — 
Deretaphrus, Newman (Entomologist, p. 403), is so far mistaken by 
its author, that he reckons it with the Ptinites. It is most nearly allied 
to Bothrideres, Dej. (Lyct. contractus, F.), and differs principally in 
the antennae having not the first but second penultimate joints larger. 
There are four species mentioned from Port Philip ; of these, however, 
only the first, D. fossus, from which the generic characters are taken, 
and probably also the second, D. puteus, belong to this genus ; at all 
events, the last two, D. illusus and vittatus, are true Bothrideres. 
The Berlin collection contains three other species of real Deretaphrus, 
from different parts of New Holland. 
Pycnomerus of the reporter (Arch, 1842, i. p. 214, t. 5, f. 4), hitherto 
confounded with Cerylon, shows striking varieties in the formation 
of the antennae in its different species. The native P. teretrans 
has ten-jointed antennae ; P. sttlcicollis (Cerylon s. Germ.), has only 
eight-jointed ones, both with a knob-shaped thickened terminal joint. 
Other species, as P. reflexus and hcematodes (Lyct), Say, as well as the 
new species from Van Diemen’s Land, P. fuliginosus, have eleven- 
jointed antennae, with a two-jointed club. 
Latometus of the reporter (ibid. p. 213, t. 5, f. 3) is heteromerous, 
therefore differing from the remaining genera of this family in the 
number of tarsal joints, but showing much agreement with Sarrotrimn, 
Coxelus, &c., which have all the tarsi only four-jointed : L. pubescens 
is a new species from Van Diemen’s Land. 
Langelandia, Aube (Ann. de le Soc. Ent. de Fr., xi. p. 225, t. 9, 
f. 2-6), is a new genus, remarkable in many respects, which has been 
placed by its author in this family. It has, with a proportionably 
longer prothorax, the appearance as well as the antennae of Ditoma, but 
wants eyes, and, like all blind insects, is apterous. The tarsi are all 
only three-jointed. L. anophthalma, discovered in France by Lange- 
land, lives in the earth in the mouldering remains of plants. 
Ditoma interrupta of the reporter is a new species from Van Die- 
men’s Land (Arch. 1842, i. p, 215). 
The internal structure of the Sarrotrium muticum has been described 
by Schiodte (ILroyer, Naturh. Tidsskr. iv. p. 209), as that of a remark- 
able variety of Opatrum, with which the author found a great agree- 
ment. The circumstance is passed over, that the six gall-vessels are 
here fixed by their ends to the thin gut, whilst in the Opatrum they 
form loops. 
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