PRODELPHINUS MALAYANUS. 



67 



doris series which I examined in the European collections. Further- 

 more the teeth are considerably larger than in P. froenatus. They 

 measure 5'""' in diameter at the base, and but 4 to -i^ are included in 

 26mm (^1 Danish inch). In Dr. LiUken's specimens the teeth measured 

 about 3""" in diameter, and 5 to 5i were included in a Danish inch. 



I am inclined to believe that P.i)la(iiodon must be regarded as a larger 

 species than P. doris, though the skulls of both are much alike in 

 appearance. 



The skull of P. ciiphrosyne differs irom that of F. jAagiodon, chiefly 

 by its more numerous teeth and smaller temporal fossae. The skeleton 

 of the type of P. marg hiatus gives the following formula: C. 7; D. 15; 

 L. 21 ; Ca. 23 = 7G. 



The two specimens of P. plagiodon give the following formula3: No. 

 15030 S Pensacola, Fla., C. 7; D. 14; L. 19; Ca. 29 = 69. No. 22017 i 

 Uatteras, N. C, C. 7 ; D. 14 ; L. 19 ; Ca. 28 = 08. 



Other differences in the skeleton are as follows: 



P. 'plagiodon is readily distinguishable from P. marginatus {= P. 

 euphrosync) externally by its spotted skin. 



1. PRODELPHINUS MALAY ANUS (Lesson). 



Delphhuts malaijauHS, Lesson, Voyage de la Coqiiille, Zool., I, pt. i, 1826, p. 184; 



atlas, pi. 9, fig. 5; Scblegel, Abbaudl. Gebietc Zool., Hft. 1, 1841. p. 20, PI. i aud 



ii,fig. 2; PI. IV, fig. 3. 

 1 Ddphinus brcvimanus, Wagner, Scbreber's Siingelb., 1846, pi. ^561, fig. 2. 

 ? Dauphin a petiUs pectoraUs, Jacqniuot & Pncberau, Voyage de la Astrolabe & 



Z616e, Mamm. & Ois., 1853, p. 33; atlas, pi. 21, fig. 2; pi. 23, figs. 7 and 8. 



2. PRODELPHINUS ATTENUATUS (Gray). 



Sleno aUenuatus, Gray, Zool. Ere. & Terr., 1846, p. 44, PI. xxviii. 



Delphinus pscudoddpliln, Wiegmanu in Scbreber's Siingetb., pi. .358; Wagner in 



do., 1846, p. 332; Scblegel, Abbandi. Gebiete Zool., Hft., i, 1841, p. 22. 

 Steno capensis, Gray, Proc. Zool. Soc, London, 1865, p. 522. 

 Ch/mene punctata, Gray, Proc. Zool. Soc, London, 1865, p. 738; Cat. Seals and 



Wbales, 1866, p. 398, fig. 101. 



