. Mesozoic fossils. of London, 1820,but a reference to the original description is purjDOsely omitted above,because the writer has not had the opportunity of consulting it. Melina mytiloides (?) (Lamarck. Sp.) Penia mytiloides, (?) Lamarck. Animaux sans Vertebres. Second Edition. , page 19. Perna mytiloides, (?) Damon. Su^jplement to the Geology of Weymouth andthe Island of Portland, Plate II., fig. 5. Perna mytiloides, (?) Phillips. Geology of Oxford and the Valley of the Thames, Plate XV., fig. 5. Fig. 8. ?. Fig. 8.—A, B, C, D.—Outlines of four specimens of Melina mytiloides (?), abo
. Mesozoic fossils. of London, 1820,but a reference to the original description is purjDOsely omitted above,because the writer has not had the opportunity of consulting it. Melina mytiloides (?) (Lamarck. Sp.) Penia mytiloides, (?) Lamarck. Animaux sans Vertebres. Second Edition. , page 19. Perna mytiloides, (?) Damon. Su^jplement to the Geology of Weymouth andthe Island of Portland, Plate II., fig. 5. Perna mytiloides, (?) Phillips. Geology of Oxford and the Valley of the Thames, Plate XV., fig. 5. Fig. 8. ?. Fig. 8.—A, B, C, D.—Outlines of four specimens of Melina mytiloides (?), about one-third of the natural size. The original of fig. A, though little more than half grown,is the only one in which the hinge and beaks are perfect; in fig. C, the lower half ofthe shell is entire ; the other two are partly restored from the lines of growth. Shell nearly equivalved, compreBsed, thickest near the anterior margin;general outline elliptic-ovate, obliquelj truncate above; height much 81 greater than the length. The shape varies in different individuals, andthe variation of the contour fan be best expressed by a separatedescrijition of eaoli part. The hinge line is usuall} straight and oblique, but the amount ofobliquity is greater in some specimens than in others. In fig. A, themaximum of obliquity is i-eached ; in iigs. C and D, the hinge line ismore nearh- horizontal; and in fig. B, it was probably a little are between ten nnd twelve cartilage pits in the hinge, and thesesomet
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Keywords: ., bookcentur, bookdecade1870, booksubjectpaleontology, bookyear1876
