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Show 1870.] MR. A. G. BUTLER ON ACREEA ANDROMACHA. 777 15. TRIPHORIS MACULATUS. T. subulata, robusta, solida; anfractibus decern, triseriatim granulosis, serie superiore multo majore, serie mediana lineari; canali basali brevi, recurvo; apertura subcirculari; serie granorum lutescente, seriebus inferioribus fuscis, irregulariter maculatis. Long. 7, diam. 2\ mill. Hab. Ins. Kauai. 16. TRIPHORIS BRUNNEUS. T. subulata, solida; anfractibus duoclecim, triseriatim granulosis, interstitiis suturaque punctulatis, serie granorum paulo minore ; canali basali oblique producto; apertura obliqua, late ellipsoidea; serie superiore granorum fusca, inferioribus cineraceis. Long. 7, diam. 2\ mill. Hab. Ins. Apaiang. 17. TRIPHORIS GRACILIS. T. elongato-cylindracea, solida, nitida; anfractibus quatuorde-cim, longitudinaliter irregulariter costulatis, triseriatim granulosis, granis eequalibus, longitudinaliter convexis; canali basali brevi; rosacea, serie superiore granorum pallida. Long. 7, diam. 1| mill. Hab. Ins. Kauai. 6. Note on Abnormities in the Neuration of the Hind Wings in Acreea andromacha. By A. G. B U T L E R , F.L.S. I have recently had occasion to look into the structural characters of the butterflies constituting the subfamily Acraeinse, and whilst so doing I have discovered a fact of great interest and some importance with regard to the neuration of Acreea andromacha, Fabr. I have carefully examined eighteen specimens of the above species, and found aberrant characters in three of them ; they differ from each other and from the typical form as follows :- 1. Differs from typical form in the possession of a short spur, about y1^ of an inch in length, emitted from the inner edge of the first subcostal branch of hind wing at about ^ of its length from its origin ; only occurs on the left-hand wing. 2. Differs from preceding in the length and position of the spur, which measures about g of an inch, aud is emitted at about -^ of the length of the subcostal from its termination. 3. Differs from first form in the possession of a spur about A of an inch in length emitted from inner edge of subcostal in right-hand wing and in a position exactly corresponding to the spur of the left-hand wing. |