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Show 766 THE MARQUIS OF TWEEDDALE ON [Nov. 20, the Philippine and Bornean naked-faced Megapodes differ specifically seems to be established ; but it would appear that the Philippine and not the Bornean species requires a new title. Mr. Sharpe proceeds on the assumption that M r . Dillwyn described from and bestowed the title of M. cumingi (P. Z. S. 1851, p. 119, t. xxxix.) on Cuming's Philippine (Manila ?) examples. But neither the context nor the descriptions and dimensions, the last on M r . Sharpe's own showing, appear to support his conclusion. Mr. Dillwyn (/. ci) considered the Labuan Megapode to belong to the same species as that sent by Mr. Cuming to the British M u s e nm from the Philippines; and the point of difficulty is whether M r . Dillwyn described (/. ci) his M. cumingi from Motley's Bornean examples or from Cuming's Philippine specimens. Mr. Dillwyn described his type as being "blackish slate-colour" below, and he figured the bird (I. ci) dark (blackish) slate-colour below. Mr. Sharpe, when differentiating the Bornean from the Philippine Megapode, says (I. ci) that the Labuan specimens sent to the British M u s e u m by Mr. L o w e are smaller and darker than the Philippine birds, especially on the breast, which is deep plumbeous grey, whereas in the Philippine bird the under surface is brownish washed with grey. If we compare the dimensions given by M r . Dillwyn of his type of M. cumingi with those given by M r . Sharpe (I. c.) of his M. lowii (ex Labuan) and of the Philippine bird, it will be found that the principal dimensions of M r . Dill-wyn's type of M. cumingi and of M r . Sharpe's type of M. lowii are essentially the same, while the dimensions of the Philippine Megapodes are sensibly larger. Tail. in. 30 31 37 Tarsus. in. 21 2-4 2*5 Mr. Sharpe states that the Labuan birds differ from the Philippine in being smaller, and he admits that the plate (I. c.) of M. cumingi represents the Bornean Megapode, and yet he assumes that M r . Dillwyn described from Cuming's Philippine individuals. As I first drew attention (T. Z. S. ix. p. 225) to the desirability of recomparing the Philippine Megapode with the Bornean M. cumingi, and as M r . Sharpe after making the comparison asserts that they differ speci-cally, I propose the title of Megapodius dillwyni for the Philippine species obtained by Cumingl. 1 Since I arrived at this conclusion Mr. Dillwyn has kindly written to me to say, respecting the M. cumingi described by him in the P. Z. S. (and also in his Nat. Hist. Labuan), the description was from a specimen which he received from Motley from Labuan. Wolf's figure was token from the same specimen. M. cumingi, Dillwyn (I. c.) M. lowii, Sharpe (I. c), ex Labuan ... M. cumingii, Dillwyn apud Sharpe (I.e.) ex Philippines Total length. in. 140 14-5 160 Wing. in. 8*6 8*1 10-0 |