SOTALIA TLUMBEA. 



Mcasunmcnis of iltrcc sliiJIs of SolaJla iiictixi. 



21 



llSOfi 

 21499 



Collection. 



Brit. Mus. * — 



....do.* 



U. S. "Nali. Mu3 



Type of- 



f!tcnn tuciixi 

 ...do 



Lor.ility. 



Ainazou River. 



....do 



Florida (?) . . . . 



fe=B 





Sa 



Cm. 



5.3 

 4.8 

 5.5 



1189cr 

 1188?> 

 21499 



Extent of 

 beak to — 





Chi. 

 14.5 

 14.2 

 18.3 



Cm. 

 3.5 

 3.2 

 3.5 



^ 



Cm,. 

 20.3 

 19.3 

 24.4 



""3 



W 



C«!. 



21.1 

 20.1 

 25.2 



Breadtli 

 between — 



Cm. 

 11.6 



10.6 

 12.9 



.9 m 

 "w.o 



as 



w 



Cm. 

 10. C 

 10.2 

 11.1 



Temporal 

 fossaj— 



Cm. 

 7.1 

 6.3 

 7.4 



Cm,. 

 5.2 

 5.3 

 0.1 



Cm. 

 23.6 



29.7 





Cm. 

 4.7 



6.3 



Cm. 

 13.9 



B-3 



C;n. 

 5.1 



6.3 



.28 

 J 30 



28-29 

 30 



; 31-33 

 32-30 



' Collected by Bates. 



t The maxilla; have sprung apart. 



SOTALIA PLUMBEA (Cnvier). 



DelpMnus 2)himhcHS, Cnvier, Ri-giie Animal, 2cl cd., i, 1829, p. 283; Pncbcrau, Rev. 



ct Mag. do Zool., 2dser., Viii, 1856, pp. 145, 315, 3G2, 449. 

 Sofalhi 2>l"mhcHx, Flower, Proc. Zool. Soc. Loudon, 1883, p. 513. 

 StcHO phiinhcus anct. 



In the elaborate critique upon the relationships of tliis species pub- 

 lished by Pucheran in 1856, the evidence upon which it was united to 

 D. malayanus, Lesson, D. duhius, Cuvier, and other species, was very 

 carefully sifted and the conclusion arrived at that it must be considered 

 distinct and valid. 



In its proportions and general appearance the type skull (a3053) 

 resembles that of S. Icniiginosa, but the differences are such that it can 

 not be united with that form, at least upon the basis of the present 

 scanty material. ^^ DeJphinus plumhcus, Dussumier," writes Professor 

 Flower, "represents the longest and narrowest form of this type, with 

 the most numerous teeth."' (Characters and Divisions, p. 489). The 

 beali is longer and more compressed than in *S', lenHghiosa, and the brain- 

 case is decidedly narrower. 



