PEODELPIIINIIS MALAYANUS. 



67 



doris series which I examined in the European collect ions. Fnrther- 

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

 ineasnre 5'"" in diameter at the base, and bnt 4 to 4:^ are included in 

 L'6""" ( = 1 Danish inch). In Dr. Liitkeu's specimens the (eeth measured 

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



I am inclined to believe that P.placiiodon must be regarded as a larger 

 si)ecies than P. doris^ though the skulls of both are much alike in 

 appearance. 



The skull of P. euphrosyne differs Ironi that of P. plaglodon, chiefly 

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

 of the typeof P. wfo-f//ii«^j/s gives the following formula: C.7; D. 15; 

 L. 21 ; Ca. 23 = 70. 



The two specimens of P. ^?a/7fOfIojt give the following formulae: No. 

 15030 S Pensacola, Fla., C. 7; D. 14; L. 19; Ca. 29 = 09. No. 22017 5 

 Hatteras, 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. 

 cupJirosyne) externally by its spotted skin. 



1. PRODELPHINUS MALAYANUS (Lesson). 



BvJphinus maJayanus, Lessou, Voyage de la Coqnille, Zool., i, pt. i, 1826, p. 184; 



atlas, pi. 9, fig. 5; Scblegel, AbbaucU. Gebiete Zool., Hft. 1, 1811, p. '20, PI. i aiul 



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

 1 Ddphinus hrcvimanus, Wagner, Sebieber's Siingelh., 1846, pi. '561, 6g. 2. 

 ? Dauphin a petites pectorahs, Jacquinot & Pncherau, Voyage de la Astrolabe & 



Z616e, Mamm. & Ois., 1853, p. 38 ; atlas, pi. 21, fig. 2; pi. 23, figs. 7 and 8. 



2. PRODELPHINUS ATTENUATUS (Gray). 



Steno atleniiatus, Gray, Zool. Ere. & Terr., 1846, p. 44, PI. xxviii. 



Delphinus piicudodelphis, Wieguiann in Scbreber's Siiiigetb., pl. ,3.58; Wagner in 



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

 Steno capensis, Gray, Proc. Zool. Soc., London, 186.5, p. 522. 

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



Whales, 1866, p. 398, fig. 101. 



