NOTES ON THE BUTTERFLIES same family is that they are most frequently observed on the wing between sundown and dark. During the hot hours of the day they are seldom seen. The insect is attracted by sap which exudes from the trunks of certain forest trees, and crowds of them may sometimes be seen settled on the trunks of these trees. I have repeatedly noticed that this insect when killed by a nip on the thorax emits a very fragrant odour exactly resembling that of vanilla. Its flight is rapid, alternately flapping and sailing after the manner of the European Vanessce. 4. OPSIPHANES TAMARINDI (Feld). I have only met with this butterfly in the Western District where it is not at all uncommon. I have repeatedly found the larvae on banana plants always keeping very close to the central stem on the under surface of the gigantic leaves. It flies in company with the preceding, but is a larger and more powerful insect. 5. OPSIPHANES BOISDUVALII (Westw). This insect I have recorded only from Punta Gorda where it is found sparingly. 6. OPSIPHANES QUIRINUS (G. and S.). I have notes of this insect only from the Western District where it is very scarce. 62