230 Bones of the Zeuglodon. [April, 



of the upper part of the celebrated bluff of Claiborne in Ala- 

 bama. 



2. The beds in which the remains of the Zeuglodon occur are 

 above the level of those Claiborne deposits, so well studied and 

 described by Mr. Conrad, in 1832-3, as containing several hun- 

 dred perfectly preserved species of lower tertiary shells. 



3. Part of the head of the Zeuglodon and vertebrae, extending 

 to a length of 30 feet, were procured by Mr. Koch, in 1845, at a 

 place w^hich I visited four and a half miles southwest from 

 Clarksville, Ala., in company with Mr. Picket, w^ho assisted in 

 the exhumation made by Mr. Koch. But the main body of the 

 vertebra (as I learn from the same gentleman and other persons), 

 which entered into the skeleton exhibited in the United States in 

 1845, under the name of Hydrarchos, were procured in Washing- 

 ton county, Ala., fifteen miles distant, in a direct line from the 

 place where the head was discovered." 



Only a few remarks will be offered in conclusion in regard to 

 this animal. When first discovered it was placed by the late 

 Dr. Harlan with the lizards. Subsequently Mr. Owen, to whom 

 specimens of the bones w^ere referred, ascertained that it belonged 

 to another order of animals, namely, the mammalia, and that it 

 occupied a position among the cetacea. 



In w^hich of the subdivisions of this order it most naturally 

 belonged could not be determined. The teeth, however, as now- 

 brought out will undoubtedly aid in establishing its alliances more 

 closely than heretofore. It may perhaps be still regarded as a ceta- 

 cean of the most distant tj-pe. The length of its neck, the form of 

 the teeth, the shape of the pelvis and scapula, and four extremi- 

 ties, which are clearly in the form of paddles, certainly remove 

 it far outwards from the centre of the group, and places it nearer 

 the seals than lamanatin or dugong. One remarkable fact in 

 regard to the teeth is, their extreme irregularity, no two seem 

 to be alike. This will be seen by comparing the tooth on plate 

 2, with those in a former number of the Journal, and in fact 

 the forms of the teeth are not all given now. The canine seem 



