G8 BULLETIN o(i, UMTKJJ STATLS NATIONAL MUSEUM. 



3. PRODELPHINUS FRCENATUS (F. Cuviei). 



DtJiihinm fracnalus, F. Cuv., Mauim. du la Menag., liv. 58, liv. 50; Hist. iiat. des 



eetacds, l^Jli, i». 155, \A. 10, tig. 1. 

 LilpU'umn fronlaJis, Dussumier, in Cuv. Regne Auiinal, i, p. 'J88. {Fide, Waguer.) 

 DtliihinuH (lor in, Gray, Zool. Ere. &, Terr., 184G, p. 39, PL xx. 

 ? Delphinus dubiits, G. Cuv., Ann. du Mus6uni, xix, 1812, p, 14. 

 DcU' III Ill's chjmeve, Gray, Cat. Seals and Whales, 1866, p. 24'J. 

 Chjvtoiia iiormalis, Gray, Proc. Zool. See. London, 1S66, p. 214. 



The lelatioiKsljips of these three species (if such they be) are so close 

 t hat J ha\ e thought best to cousider them conjointly. Professor Flower 

 has said [List, p. 30) that — 



Though single well-marked specimeus of Gray's Chjmcvia dorls and Steno attcnuatus 

 may be so unlike as to justify their being placed in distinct species, yet when a large 

 series, such as those of the British Museum and College of Surgeons combined, are 

 couipared togetiier, the two extremes pass so insensibly into each other that it is 

 dit'licult to avoid the suspicion that the ditferences depend upon age, or sex, or on 

 individual variation. Unfortunately these forms are known at present only by skulls. 

 When the remaining parts of their organization can be correlated with them proba- 

 bly otiier specilic distinctions will be demonstrated. 



That it is uusouud to combine all these nominal species at present 

 appears from the fact that there are iudications that the exterior of the 

 individuals from which some three or four of the skulls were derived dif- 

 ered much in appearance. 



In the atlas of the Voyage of the Coquille (pi. 9, tig. 5) is figured the 

 exterior of a dolphin, taken between Java and Borneo, and in the 

 text styled T). malayanus. With this species Schlegel, in the AhJiand- 

 langen, identifies a skull from Celebes, two skulls from Java, and a 

 young individual, somewhat over one and one-half feet long, from 

 Borneo. This individual appears to have beeu a suckling, as is indi- 

 cated both by its size aud by the fact that "it still had some hairs 

 on the sides of the snout," aud that the teeth were "still ouly incom- 

 l)letely broken through the gums." "The color is bluish black gray, 

 the under parts somewhat .clearer." The skull from Celebes, which 1 

 examiued, closely resembles the type of Gray's C. attenv.atus, but is ab- 

 solutely larger, with relatively longer beak and shorter tooth-row. The 

 uumlter of teeth is, however, nearly the same. 



Of the individual which served for the type of 7>. malayanus of the 

 Coquille no parts appear to have beeu brought home. The color is de- 

 scribed as " uuiformement cendree."* It was 5 feet 11 inches (French) 

 lon^. 



It is, of course, impossible to determine whether Schlegel's identifica- 

 tion of his specimens with T>. malayanus was a correct oue, but the 

 young individual was at all events uot unlike that ispecies in color. 



In the atlas of the Voyage of the Astrolabe and Zclre (pi. 21, fig. 2; 

 pi. 23, figs. 7 and 8) are figured the skull and exterior of another dark 



"All the figures on plate 9 of the atlas of the CoqniUe arc colored bluish-green, 

 which is evidently not intended as the natural color. 



