DELPHINUS. 131 



XII. DELPHINUS. (D.) 



(The True Dolphins.) 



Delphinus, Linnceus, Syst. Nat., 1776. 



Beak long and marked out by V'^h^^P^d groove. 

 Teeth numerous in both jaws ; palate ridged mesially, 

 deep groove on each side ; pterygoids meeting 

 mesially ; dorsal tin moderate, falcate. 



(1) Delphinus delphis. (D. d.) 



(Common Dolphin.) 

 Delphinus delphis, Linnoius, supra cit. 



Colour black on toj) of head, back, dorsal fin, tail : 

 yellowish grey on pectoral limb, belly white, grey- 

 tinted fawn colour high on side of body, lighter 

 band from angle of mouth almost to tail. Length 

 7 to 8 feet ; dorsal fin narrow. Beak more than half 

 the leno;th of skull. Form OTaceful. 



1. Skeleton, female, articulated, immature, with dorsal and 



caudal fins, pelvic bones and hyoid. Length of animal 

 5 feet 5 1 inches ; length of skeleton 5 feet 1 inch. 

 Vertebral formula C^D^^LCd^^ = 75. Plates not ossified 

 to vertebrae. See Turner's description in the Proe. 

 Roy. PJtys. Soc. Ed in., 1887. Teeth numerous. 

 Dalmeny, Firth of Forth, February 1887. 



[No. 1 and the succeeding specimens of D. delph is are 

 from the Turner Collection.] 



2. Skeleton, male, articulated, with dorsal and caudal fins, 



pelvic bones and hyoid ; plates not ossified to vertebral 

 bodies. Length. of skeleton 5 feet 9 inches; length of 

 skull 16| inches. Nasals on same plane as vertex 



