PHTSETERID JE. / O 



Mesoplodon angulatus (Owen ^). 



Sjn. Ziphms angulatus, Owen ^. 



Dioplodon anyulatus, Gervais ^. 



In this species the mesethmoid band is broad and prominent, 

 without a median groove or anterior gibbosity, and with its lateral 

 surfaces bevelled away. Since, however, the type specimen is much 

 rolled, some of these characters may be due to this cause. 



Hah. Europe (England and (?) Belgium). 



27433. The cranial rostrum, imperfect anteriorly ; from the Eed 

 {Fig.) Crag of Suifolk. This is the type specimen, and is figured 



by Owen in the ' Crag Cetacea ' (Mon. Pal. Soc), pi. iv. 



figs. 1, 2. Purchased, 1851. 



Mesoplodon compressus (Huxley ^). 



Syn. Belemnoziphhis compressvs, Huxley^. 

 {? ) Ziphius compressus, Owen^. 

 Dioplodon compressus, Gervais'''. 



If the Ziphius compressus of Owen be not identical with the 

 Belemnoziphius compressus of Huxley, the specific name of the former 

 ought to be changed. Owen's type specimen is characterized by 

 the great vertical depth of the rostrum, the mesethmoid band being 

 broader than in M. anjustus, and showing a median groove in its 

 posterior half. Additional specimens are required to indicate the 

 full affinities of this form. 



Bah. Europe (England). 



27027. The cranial rostrum, imperfect at the two extremities ; 



{Fig.) from the Eed Crag. This is the type specimen of Owen's 

 Ziphius compressus, and is figured in the ' Crag Cetacea' 

 (ILon. Pal. Soc), pi. v. fig. 3. Purchased, 1851. 



J Crag Cetacea (Mon. Pal. Soc), p. 20 (IduQi).— Ziphius. 



2 Loc. cit. 



^ Osteograpbie des Cetaees, p. 422 (18G8-70). 



* Quart. Journ. Geol. Soc. vol. xx. p. 388 (1834). — Belemnoziplmis. 



5 Loc. cit. 



6 Crag Cetacea (Mon. Pal. Soc), p. 25 (1870). 

 ■'' Osteograpbie des Cetaees, p. 422 (1868-79). 



