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Show 4/8 MR. A. SMITH WOODWARD ON THE [May 17, e. 2 ad. sk. Coonoor, Nilghiris, Jan. 28, Hume Collection. 1881 (TV. Davison). Wing 13*9 inches. Very pale below, with whitish cross-bars, somewhat coalescing on the chest, which is consequently more uniform. Face deep ochre, barred across with blackish. /. Ad. sk. Southern India (Dr. Jerdon). J. Gould, Esq. Wing 13*6 inches. Very tawny in appearance, the face being deep ochreous buff, rufous near the eye, with scarcely any sign of white on the frill of the ear-coverts. g. Ad. sk. Nuwara Eliya, Ceylon. Mr. E. Boate [C.]. Wing 13*2 inches. A dark bird, with the chest barred like the rest of the under surface ; face deep ochreous buff, with evident tracts of dusky cross bars. h. Ad. sk. Nuwara Eliya, Ceylon. Mr. E. Boate [C.]. Wing 12-5 inches. A darker bird, with the chest coarsely barred with dark brown, somewhat uniform on the sides. Face uniform deep rufous ochre, with a slight indication of white on the lower part near the frill. i. Ad. sk. Kandy (A. White). Hume Collection. Wing 11*9 inches. Strongly tinged with ochreous below. Face blight orange-rufous, with scarcely any white on the lower margin. No sign of cross-barring on the face. 2. On the Presence of a Canal-System, evidently Sensory, in the Shields of Pteraspidian Fishes. By A. S M I TH W O O D W A R D , F.Z.S., F.G.S., of the British Museum (Natural History). [Received April 28, 1887.] In bis well-known monograph on the Cephalaspidae, Professor Rav Lankester described and figured ' a number of small depressions or " pits," arranged in double series upon the external surface of certain head-shields pertaining to the Heterostracous or Pteraspidian division of the group ; and three years subsequently, in making known a new generic type, Holaspis'2, he remarked still further upon the same curious pittings, which were shown in this fossil with unusual distinctness. These he naturally regarded as " the sites of soft tegumentary structures, in all probability of those characteristic sensory-follicles of fishes," with which they agreed in disposition ; and then followed another inference, " that a secreting membrane was closely attached to the striated calcareous material" of the outer layer of the shield in the original living fish. Some of these fossils are now in the British Museum, the fine 1 E. Ray Lankester, "The CephalaspicW (Mon. Palaeont. Soc, 1868, 1870), pp. 17, 22, pl. i. figs. 1, 4, 8; pl. vi. figs. 1, 6; pl. vii. figs. 8, 9. 2 E. Ray Lankester, " O n Holasjris scriccus," Geol. Mag. vol. x. (1873), pp. 241-245, pl. x. |