74 MAMMALIA. 



British Museum (Cat. Foss. Mamm., Part v, p. 73, 1887) to which 

 he gave the same specific name, but did not say whether he 

 regarded it as the same as Prof. Huxley's species. The two 

 specimens are similarly compressed and the convexity of the upper 

 surface is similar but there are differences of proportion, to be seen 

 by comparing Prof. Huxley's figure A. with Sir R. Owen's pi. V., 

 fig. 3, which seem to indicate, something more than individual 

 peculiarities ; but until these differences can be clearly defined it 

 is better to keep them as one species. 



MESOPLODON FLOKIS, NEWTON. 

 ( = MESOPLODON FLOWEKI, CANHAM, MS.) 



The name of Mcsoplodon Floweri was proposed by the Rev. H. 

 Canham, for a ziphioid rostrum from the Nodule-bed of the Red 

 Crag at Trimley, which is now preserved with the rest of his 

 collection in the Ipswich Museum. This name was adopted by 

 Prof. Flower (Cat. Vert. Mus. R. Coll. Surg., Part ii, p. 562, 1864) 

 and by Mr. Lydekker (Quart. Journ. Geol. Soc., Vol. XLI1L, 

 p. 15, 1887) and the specimen has .since been described (Newton, 

 Quart. Journ. Geol. Soc. Vol. XLVL, p. 448, Plate xviii, Figs. 

 7 a, />, e). The "well ossified mesethmoid forming a prominent 

 feature on the upper surface of this rostrum shows at once that 

 it is to be referred to Mesoplodon and not to Choneziphius. The 

 mesethmoid does not, however, extend to the front of the rostrum, 

 but ends in a point about 4| inches therefrom, and from here to 

 the anterior extremity the premaxillaB are in contact, their upper 

 surfaces being flattened and giving to this portion of the rostrum a 

 peculiar quadrate appearance, which is one of the striking and 

 characteristic features of the specimen. These characters are 

 quite unlike those of any other known species of Mesoplodon. The 

 term Mesoplodon Floweri was first used by Julius von Haast 

 (Proc. Zool. Soc., 1876, p. 478) for a recent species of this genus, 

 which is now believed to be identical with one previously de- 

 scribed ; as, however, the retention of the same name for another 

 species would be likely to lead to confusion, Mr. Canham J s fossil 

 rostrum is to be called Mesoplodon Floris. 



MESOPLODON SCAPHOIDES, NEWTON. 



There is in the Museum of Practical Geology a remarkably 

 short ziphioid rostrum from the Nodule-bed of the Red Crag near 

 Woodbridge, which has been named M. scaphoides (Quart. Journ. 

 Geol. Soc., Vol. XL VI., Plate xviii., Fig. 8, 1890) on account of 

 its resemblance to the prow of a boat. While all other rostra 

 described from this deposit are elongated forms , this is charac- 

 terised by the very opposite peculiarity, being only about 5 J inches 

 in length. At first sight it might be thought to be a broken and 



