142 Mr. H. W. Bates’s Notes on Longicorn Coleoptera. 
the spinelets form rather a fasciculus or bundle set on a 
rounded base; there are no glassy spines in connexion with 
these bundles, which, as they approach the tip of the arm, 
gradually diminish in size. 
Along the middle line of each ray, and even as far as the 
centre of the disk, it is quite easy to detect the regular 
arrangement of the chief paxille. About twelve of these can 
be made out in each row; and they add much to the distinct- 
ness of the several rays. 
In addition to this row of specially large and conspicuous 
paxille, two sets at least of smaller ones are to be made out 
on either side of each of them. Similarly the somewhat wide 
spaces between each of the more important paxille are occu- 
pied by smaller paxille. The rest of the abactinal surface, 
whether on the free portion of the rays or on the disk itself, 
is occupied by single spines, by spines a few together, or by 
papule ; but none of the spines are either long or sharp. 
The single madreporic plate, which is situated a little way 
from the centre of the disk, is of a moderate size and suffi- 
ciently easy of detection. 
Keuador. Coll. B.M. 
The single specimen from which this description has been 
drawn up has been at least twenty-five years in spirit; it is 
of a creamy-yellow colour. It was collected by 8. O. Good- 
ridge, Esq., R.N., and formed part of the Haslar collection. 
XVIII.—Notes on Longicorn Coleoptera.—Revision of the 
fErénicides and Amphionychides of Tropical America. 
By H. W. Bares, F.R.S., F.L.S. 
Wir the exception of three genera—Oberea, Tetraopes 
(northern forms, spreading across the Mexican frontier partly 
into Central America), and Phea—all the true Saperdine of 
Tropical America belong to Lacordaire’s “ groupes’? Amphio- 
nychides and Aurénicides. ‘These are distinguished from tem- 
perate and Old-World forms of Saperda not by any constant 
peculiarity of structure, but a combination of characters and the 
occurrence in many of the genera of special features not exist- 
ing in any other groups of the subfamily. In these remarks 
it will be understood that I recombine the original Saperde 
and their allies with the Phytawcie, placed in Lacordaire’s 
system so wide apart, and form with them a subfamily Saper- 
dinz, equivalent to the true Lamiine, Niphonine, Acantho- 
derine, &c., and that I exclude the groups Calliides, Gryl- 
