READING PUBLIC MUSEUM AND ART GALLERY

Introduction IX
In the OncideriniJ the female selects a branch (up to one-half inch
in diameter for Oncideres cingulata and correspondingly thicker
for larger species) and, standing on the part to be pruned, begins
to girdle, working one section at a time 01' making a complete
circle through the bark and gradually deepening the incision, the
entire process requiring up to twelve hours for completion. Oviposition
may be completed before or after the twig is amputated,
in the latter case, the female goes down with the branch. The eggs
are placed in or beneath the bark, ODe or two in each girdled
branch, or more if the branch is large. The larvae after hatching
feed first beneath the bark, then penetrate into the sapwood, often
eating most of the wood. Pupation usually takes place near the
end of the burrow, which is kept open and frce of frass. Both
sexes as imagines feed on tender bark.
REMOVED GENERA AND SPECIES
Hypomia. Thomson does not appear to belong in this tribe. Its
antennal formula is entirely distinct, fourth segment being elongate
and arcuate j elytl'R with apices squarely truncate; fifth sternite
very elongate, nearly equal to second to fomth together ; and body
and legs bristled j femora subpedunculate.
Merocentrurn Lane, recently erected for Gryllica melzeri Bondar
and assigned to this tribe, must be moved once morc. From
all indications, especially the shape of the prothorax and head, the
strongly inclined front, form and shortness of the legs, and the
lack of body pubescence, it should be placed in the Ischiolonchini.
Xylmninms is to be placed close to it.
Tmchysomus huamboyae Kirsch is shown by the original figure
to belong to the Ll.canthocinini, not in this tribe.
Helvina should be placed very close to PachYIJeZa in the H'ip­
popsini.
NOTE: All plates and the index will be published with part 2.