40 BULLETIN 36, UNITED STATES NATIONAL MUSEUM. 



TURSIOPS CATALANIA (Gray). 



Dclphiiuis mtalnnia, Gray, Proc. ZooL Soc. London, lbG2, p, 143. 

 Tiirsio cataJama, Gray, Cat. Seals and Whales, 18GG, p. 232. 



This species is distinguishable from T. tursio by its smaller size, rela- 

 tively longer beak, and style of coloration. 



The skull (No. 1391fl) of the larger of the two specimens reported by 

 Gray, though only 43.4^'^ long, belonged to an adult animal, as is at- 

 tested by the fact that from this individual were taken two ftPtuses.* 

 The length of the beak in this specimen is 58 per cent, of the entire 

 length of the skull, and in the second type-skull (No. 1391Z;), 57.8 per 

 cent. So long a beak is rarely or never found in T. tursio. 



The lower surfaces of Ihe body in both of Gray's specimens were cov- 

 ered with spots or blotches of dark color, a style of coloration which, 

 so far as I am aware, has never been observed in T. tursio. 



There are some peculiarities in the types which merit attention. In 

 No. 1391fl, the larger of the two skulls, the pterygoids are widely sepa- 

 rated (the tips being 5"" apart), while in 1391& they are in contact in 

 the median line. The relation of the parts in the former specimen 

 would, according to Professor Flower's arrangement of the genern, 

 throw it into Sotalia, to which genus this skull taken alone would prob- 

 ably have been relegated. But there is no other essential difference 

 between this and the second skull, and taking into consideration the 

 data we have regarding the two individuals, there can be little doubt 

 that they belong to one and the same species. 



The front mandibular teeth are much worn in 1391«, and considerably 

 also in the second specimen. The symphysis in both is moderately 

 keeled. The intermaxilhie are very convex and high and somewhat 

 "humped "near the middle of the beak. They are apart anteriorly. 

 The triangular prenarial area extends 8.2*^^'" from the uares and is concave. 



Professor Flower has already assigned to this species No. 3012 in the 

 Museum of the Eoyal College of Surgeons, and No. «3070 in the Paris 

 Museum from " China Seas." To these should probably be added No. 

 a3059 in the Paris Museum, whose label bears the words "IMers d'Inde." 

 Measurements of these three specimens and of the types are appended. 



* Gray, 1. c. 



