and some other cetacians. Fig. 5 repre- 

 sents the third cervical vertebr.i. 



The second and twelfth dorsal vertcbne 

 are missing, the whole number being thir- 

 teen. Fig. 6, i-epresents the seventh dor- 

 sal vertebra — n, as seen from behind — b, 

 as seen laterally. 



The lumbar vertebras amount to twelve, 

 of which the sixth and twelfth are missing. 

 Fig. 7, represents the seventh lumbar ver- 

 tebra. These vertebra3 all have the same 

 general form, but the lateral winged pro- 

 cesses are more decayed and broken in 

 some of them, than in the one here repre- 

 sented. 



The eleventh and seventeenth caudal 

 vertebrae are missing, and perhaps a nine- 

 teenth and twentieth, making the, proba- 

 ble, whole number, twenty. Fig. 8, repre- 

 sents the fourth caudal vertebra. The 

 form of those nearer the extremity of the 

 tail may be seen in fig. 1. 



From these statements, it will be seen, 

 that the whole number of vertebrae in the 

 skeleton was -52, eleven of which are mis- 

 sing. Two of the missing vertebra; were 

 known to have been taken away, after tlie 

 bones were discovered. Articulating sur- 

 faces, at the meeting of the caudal vertebnc, 

 indicate five chevron bones, of which the 

 fourth only is Avanting. Fig. 9, represents 

 the second chevron bone. 



The total length of the vertebral column, 

 due allowance being made for the eleven 

 missing vertebra, and 17 inches for the 

 aggregate thickness of the 51 intervertebral 

 cartilages, is one hundred and thirty-seven 

 inches. Of this length, the cervical ver- 

 tebras make 10 inches, the dorsal 40, the 

 lumbar 48, and the caudal 39. The lum- 

 bar vertebrie are largest, having an average 

 length of about 4 inches, with a diameter 

 of 3 inches. The total length of the animal, 

 including the head and caudal fin, must 

 have been about 168 inches, or 14 feet. 



Fig. 10, is the /i]/oiV7 bone, and Fig 11, 

 the sternum, both of which are large and 

 strong, in proportion to the size of the 

 skeleton. The former measures 8. -3 inches 

 in a right line, from point to point, and the 

 latter is 15 inches long, from 'i.\ to 7 wide, 

 and on an average about one inch thick. 



The ribs are considerably decayed and 

 broken. The longest entire rib measures 

 just 24 inches along the curve. Fig. 12, 

 represents the anterior rib, on one side. It 

 is very strong, consisting of two portions, 

 of nearly equal length, of solid bone. 



Fig. 13, represents the scapula, the 

 humerus and the bones of the fore-arm of 

 the left fin, in their connexion. The scap- 

 ula and the ulna of the right side were re- 

 covered, but all the other bones of the 

 paddles are wanting. The height of the 



scapula is 7 inches ; the length of the 

 humerus 5, and of the fore-arm 4 inches. 



I was able to obtain the following meas- 

 urements of the head, which admit of direct 

 comparison with a part of the measure- 

 ments, given by Cuvier, of the nead of 

 Beluga leucas : 



D. vermontana. B. leuccui. 

 Length of the head, from the "i 



occipital condyles to the > 21.2 inch. 20.9 inch. 



end of the snout, ) 



" of one side of the lower jaw, 16. 5 " 16.5 " 

 " of alveolar margin, " 8.2 " 7.8 " 



" of the symphysis, " 3.1 " 3.1 " 



Between these measurements, it will be 

 seen that tliei-e is a very close agreement ; 

 but they disagree in their dental formulae, 

 as expressed below : 



B. vermontana. 

 Dental Formulae,- -=30: 



B. leucas. 



9 9 op 



K -„=36. 



They also difll'er in the relative width of 

 the maxillary and intermaxillary bones, as 

 developed on the upper side of the gnout, 

 and also in the outlines of the head. 



Since the above measurements and com- 

 parisons were made, I have had an oppor- 

 tunitj' to examine the bones of three heads 

 of B. leucas, in the Hunterian Museum, in 

 London, and an entire skeleton of the 

 animal in the collection of Prof. Agassiz, at 

 Cambridge, Mass. On account of the ab- 

 sence of Prof. Agassiz, when I visited Cam- 

 bridge, a minute comparison of my fossil 

 bones, with the corresponding bones of his 

 skeleton, was not gone into, but a sufficient 

 number of bones was compared, to leave 

 little doubt that they belong to dififerent 

 species of the same genus. I have, there- 

 fore, described my Beluga under the .specific 

 name of rermo/ifffwa, which I gave it, pro- 

 visionally, in my first account of the fossil*. 



Locality. — In order to prevent any doubt, 

 hereafter, in regard to the precise place in 

 which these fossil bones were found, I have 

 here introduced a little map of the township 

 of Charlotte, on which I have marked the 

 locality by a black i^. The township is six 

 miles square, and bounded on the west by 

 Lake Cham plain. The single lines de- 

 note the principal roads passing through 

 the t0A\7iship. The railroad passes through 

 it, from north to south, nearly parallel to 

 the lake shore, and at an average distance 

 of 1^ mile from it. The distance between 

 the two roads, which cross the railroad, one 

 on the north and the other on the south 

 side of the locality, is about 80 rods ; the 

 distance to the locality, from the north 

 road, being perhaps 25 rods, and from the 

 south road, 55 rods. The northern road 

 crosses the railway on a bridge, over the 

 excavation, elevated about IB feet above 



* Silliman's Journal of Science, Vol. IX, p. 256. 



