254 Mr. T. Stock on Kammplalten. 



broad, and divided longitudinally into two areas ; the one is 

 formed by a depression, which follows the curve of the 

 handle to its junction with the pectinated margin of the 

 lamella, the other by an elevated ridge, which occupies the 

 remainder of the surface. 



Same horizon, locality, and collection as the last. 



No. 8 (PI. VIII. fig. 3, nat. size, and fig. 3 a, twice nat. 

 size). Length 5 lines ; greatest width of the lamella 1^ line. 

 The lamella and handle form distinct areas, as in ail the 

 specimens so far observed. The lamella is feebly denticu- 

 lated on one margin. The denticles are about eleven in 

 number, more horizontally directed than in No. 7, and appear 

 to be the slightly prolonged terminations of striaj, wdiose course 

 cannot be observed very far back. The lamelhi, like those of 

 No. 6 and No. 2 of the preceding paper'^", and in the same 

 relative position, is marked by a series of about fifteen punc- 

 tures. The handle (see PI. VIII. fig. 3 a) is short (2 lines), 

 broad, and thick. It rises gradually from the plane of the 

 lamella, and terminates abruptly in an elevated polished boss ; 

 close to but beneath it there is a rather deep depression ; and 

 also close to it, but rather to the underside of it, a much shal- 

 lower depression can be detected by the aid of the lens. On 

 the handle, near where it enters the lamella, there are a 

 few coarse striae, which terminate about halfway across 

 towards the non-pectinated aspect of the specimen in slightly 

 elevated denticular prominences. Obscurer indications of 

 these striffi and their denticular terminations can be observed 

 along nearly the whole of the length of the handle. 



Same horizon, locality, and collection as the preceding. 



A further examination of the black-band ironstons of Burgh 

 Lee, near Edinburgh, has resulted in the discovery of several 

 specimens, referable for the most part to the form tlescribed as 

 No. 5 in the preceding paper. One of them, however, is of 

 sufficient interest to be worthy of separate description. 



No. 9 (PI. VIII. fig. 4, nat. size, and fig. 4 a, twice nat. 

 size) . Length 5 lines ; greatest width of the lamella 1^ line. 

 The lamella is damaged along the denticulated (?) margin, so 

 that it is impossible to say what was its original shape. The 

 handle is 3 lines long, much broader than that of the rest of 

 my specimens from the same locality, long in proportion to 

 the entire length of the ]jlate, and tapering to a rounded ex- 

 tremity. A prominent elevation occupies the centre of the 

 handle, is broadest where it enters the lamella, and gradually 

 tapers to a fine point in the opposite direction. 

 * Op.Jatn C'it. p. 94; pi. vi. tig. 2. 



