246 Mr.F. P. Pascoe on the Australian Species of Clytus. 
Xylotrechus. Many of the species which Chevrolat refers to one 
Thomson places under the other, ¢. g. C. plebeius, CO. ornatus, C. 
verbasci, &e. M.Chevrolat regards Clytus scalaris as a true Olytus, 
while it is a Plagionotus for M.Thomson. This author, indeed, con- 
fines the term “ Clytus” to the North American species, most of the 
numerous European species receiving the new name of Europa, which 
was afterwards altered to Clytumnus. Perissus, Chev., seems to be 
distinguished from Xylotrechus by the greater length of the four pos- 
terior legs ; at least, I can make out nothing from the other characters 
that will serve to differentiate the two. 
In arranging between seventy and eighty species of Clytus (most 
of them undescribed) belonging to the Malayan fauna, I have failed 
to seize the characters on which those genera depend, and unfortu- 
nately there is nothing distinctive in the habit which would enable 
the eye to separate one form from another. For these, therefore, I 
prefer retaining the old name of Clytus. Arideus and Demonax may 
be accepted, although the limits of the latter are not very satis- 
factory. In this case it will be necessary to separate Clytus dioph- 
thalmus, a remarkable form, and one of the most distinct of the whole 
group. This genus I have named as above Cremys, which, with a 
habit slightly resembling Arideus, but with another style of colora- 
tion, differs technically in the absence of spines to the antenne and 
the non-clavate femora. 
The doubtfully indigenous species are 
Clytus sexmaculatus, Don. Apparently unknown to every one. 
—— glaucinus, Boisd. Said to be from Australia by MM. Laporte 
and Gory. The habitat of Boisduval’s specimen was unknown to 
him. 
Durvillei, Lap. & Gory. “ Rawak, New Guinea.” In the British 
Museum, ticketed “ Rockingham Bay.” 
annulosus, Fab. According to Boisduval, found at ‘“ Port Jak- 
son.’ Is a very common species all over India and the islands 
down to New Guinea. 
—— attenuatus, Boisd. As the author thinks this ought probably to 
form a new genus, we may he quite sure it has nothing to do with 
Clytus. 
V-album, Boisd. From Hobart Town. Apparently belongs to 
the genus Zoédia. 
