194 Mr. C. J. Gahan's notes on the 
the genus, by which, he says, it may be easily recognised, 
is that the second abdominal segment is occupied, in 
both sexes, by two large transverse and tomentose de- 
pressions. This character he emphasizes in a foot-note, 
where he adds :—‘‘ I find it in both sexes of all the species 
(five in all) which I have under observation.” As a 
matter of fact, however, they are the males only which 
are furnished with these tomentose depressions, so that 
in this respect the genus does not differ from many other 
genera of the same group, such as Daxata, Depsages, 
Rhytiphora, and Niphona. The female differs from the 
male not only by the absence of these depressions, but 
by having the last abdominal segment more elongated 
and impressed with a slight groove along the median 
ventral line. 
The presence of tomentose depressions on certain of 
the abdominal segments of the male is not very unusual 
amongst the Longicorns. It is common enough in the 
Niphonine, where they are borne anteriorly, one on each 
side on the second abdominal segment, but are some- 
times so narrow as to be almost entirely concealed by 
the fringe of sete, which comes off from the hind mar- 
gin of the first segment. They are similarly placed, 
when present, in the Mesosine ; and this fact, when 
considered along with other points of affinity, is an 
additional argument in favour of those arrangements in 
which the Niphonine are placed close to, or included in, 
the Mesosine. 
In the genus Xylorrhiza, and in other genera included 
in the same group, there are three pairs of somewhat 
oval or rounded tomentose depressions on the abdomen 
of the male, a pair to each of the three intermediate 
segments. 
59. Rhytiphora mista, Newm. ?. 
The Entomologist, vol. i., p. 362. 
To this species I refer with doubt three examples taken 
in Tasmania. 
The female differs from the female type of mista in 
having slightly longer and slenderer antenne; but this 
is the only difference of any importance that I can find. 
They might, however, equally as well be placed in Rhyti- 
phora caprina, Newm. 
Without seeing a much larger series, I can scarcely 
