342 Mr. A. White's Descriptions of new species U both young and adults ; Avion hortensis, yo^ng and adults ; Avion atev, young only. From this it may be seen that the genus Avion as well asLimax possesses the property. — B. J. C. Tuam, Sept. 30, 1843. EXPLANATION OF THE PLATES. Plate X. Fiff. 1 . Limax maximuSj var. y. Drap. — 2. Do. do. Nilsson's " Cinereo-niger." — 3. Tooth or cutting plate of L. maximus, magnified and nat. size. — a. Internal shell of L. maximus. Plate XI. Fig. 4. Limax arboreus. — 5. Do. do. resting position. — 6. L. arboreus, variety. — 7. Do. do. resting position. — 8. L. arboreus, variety. — 9, 10. L. arboreus, young. — 11. L. flavus. — 12. Do. do. back view. Plate XII. Fig. 13. Limax agrestis. — 14. L. Sowerbii. — 15. Do. do. resting position. — 22. L. Gagates, young. XLIII. — Descriptions of appavently new species and vavieties of Insects and othev Annulosa, pvincipally fvom the collection in the Bvitish Museum. By Adam White, M.E.SS. Lond. and Paris, Assistant Zoological Department, British Museum. INSECTA. COLEOPTERA. BUPRESTIDJE. 1. Chri/sochroa (Catoccantha,De].) opulenta YSiT. purpurea. White. C. purpurea, elytris post mediam flava fascia transversa, raeso-et meta-thoracibus subtus purpureo et viridi micantibus. Long, unc. 1| — 2. Hab. Philippine Islands (Cuming) : Brit. Mus. This differs from the Chrysochroa opulenta. Gory, in the meso-
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