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Show 300 SIR V. BROOKE ON CERVUS MESOPOTAMICUS. [Mar. 7, elusive of those figured) agree together, while they differ from the specimen first received ; a slight modification of m y original diagnosis appears to m e to be therefore necessary. With one exception (fig. 2), in none of the horns lately sent by Mr. Robertson is the inner tine b (I. c. p. 264, fig. 3 b) developed, from which I a m led to believe that this tine is of uncertain occur- Fig. 2. Left horn of Cervus mesopotamicus (about four years of age). rence, and does not by any means constitute a fundamental specific character. Again, with but one exception (fig. 3 c), in none of the new specimens is the upper of the two tines (I. c. p. 264, fig. 3, c) which projects from the anterior aspect of the palmated portion of the horn any thing more than a mere rudiment; in some it is entirely absent. Instead of being subcylindrical, as was the case with the beam of the old type specimen, the beams of all the new specimens are very decidedly compressed anteriorly, forming, in the more adult, a sharp ridge from which are, not unfrequently, developed blunt rudimentary tines (c, figs. 1, 2, 3, 4). In the finest horn sent by M r . Robertson the upper third of the beam is furnished with eight strong tines, some of which are upwards of 7" in length (fig. 1 d) ; and even in the horns belonging to younger animals (figs. 2 & 3) these coronal tines |