512 PROF. FLOWER ON THE DELPHINID^. [NoV. 20, 



ilie teeth are small, not exceeding 3 millim. in diameter, and 

 numerous, f^ to |^. Vertebrse 73 to 75. 



' 40 60 



D. delphis, Linn., with the closely allied or identical D. novce 

 zelandice, Quoy and Gaimard, D.forsteri, Gray, D. fulvofasciatus, 

 Hombroii and Jacquinot, and D. bairdii, Dall. 



D, major, Gray. 



D.janira, Gray. D. pomeegra, Owen. 



D. longirostris, Gervais (not Gray). 



/3. Palate not grooved. 



TuRSioPS, Gervais, Hist. Nat. des Mammiferes, ii. p. 323 (1855). 



Rostrum tapering moderately from base to apex. Symphysis of 

 mandible short. Teeth |-J to ^, stout (6 to 7 millim. in antero- 

 posterior diameter). Vertebrae: C. 7, D. 13, L. 17, C. 27 ; total 

 64. 



T. tiirsio (Bonnaterre), with closely allied, if not identical, T 

 metis, Gray, T. eunjnome. Gray, T. cymodice, Gray, T. aduncus, 

 Hemprich and Ehrenberg, and T, gillii, Dall. 



T. catalania. Gray. 



Clymenia, Gray, Synopsis of Whales and Dolphins, p. 6(1868). 



Clymene, Gray, P. Z. S. 1864, p. 237. 



Prodelphinus, Gervais, Osteog. des Cetaces, p. 604 (1880). 



Eostrum rather variable. Symphysis of mandible short (less than 

 one fifth of the length of the ramus). Teeth g^ to ^, small, not 

 exceeding 3 millim. in diameter. Vertebrae 73 to 78. 



This is a rather heterogeneous group, which may require division 

 when better known. Four leading forms are distinguishable, the 

 characters of which need not be repeated here, especially as they are 

 not very easily defined. The principal species, real or nominal, 

 which have been assigned to each are : — 



1. C. obscura. Gray. C superciliosa (Garnot and Lesson). C. 

 smilis, Gray. C. {Electra) thicolea. Gray. 



2. C, euphrosyn^, Gray. C. styx, Gray, 0. euphrosynoides, 

 Gray. C. dorides, Gray. C. marginatus (Duvernoy). . C. tethyos, 

 Gervais. 



3. C.dubia (Cuvier). C.doris, Gray. €'. normalis, Gray. C. 

 brevimana (Hombron and Jacquinot). C franata (F. Cuvier). 

 G. frontalis (Dussumier). C. (Steno) attenuata (Gray). C. (Ste- 

 no) capensis (Gray). 



4. C. longirostris, Gray. C. stenorhyncha, Gray. C. roseiventris 

 (Hombron and Jacquinot). C. microps. Gray. C. alope, Gray. 



Peron's Dolphin {DelpJdnus leucorhamphus, Peron, or Leucorham- 

 phus peronii of Lilljeborg) resembles some forms of Clymenia in its 

 cranial characters ; but having no dorsal fin, it has been separated 



