STENO. 



585 



the dnxwiiig). Sinclair, quoted by Sterudale, describes the colour as 

 " Above (and below behind the anus) rather pale leaden grey, with 

 uumerous long drop-shaped spots. Of these the majority, especially 

 on the rostrum, limbs, dorsal fin, and Hukes, are pure white, the 

 rest dark slate-colour or black. Below, from the anus forward, the 

 general ground-colour is white, much mottled on the belly wdth the 

 dorsal ground-colour, less so on the breast, and the mental (chin) 

 region almost pui'e white ; but there are a few black spots." 

 There is probably some variation. 



^^^ 



Fig. 190. — Steno lentlginosus. (From Elliot's figure.) 



Dimensions. Total length of au adult female (Vizagapatam) 

 7 ft. 10 in. ; tip of snout to dorsal fin 40 inches, to pectoral 24 ; 

 length of dorsal along front 13, of pectoral along anterior curve 

 12 ; breadth of tail-flukes 21 (Oiuen). An adult male (Bombay) 

 was 10 ft. 6 in. long, the pectoral 15 in. long, base of dorsal 27, 

 expanse of flukes 27. Skull of female 18 in. long, I'ostrum 11, 

 breadth of skull between orbits nearly 7. 



Distrihution, Indian seas. The species has been obtained at 

 Vizagapatam and at Alibag near Bombay. I also refer to it a 

 skull now in the Museum of the College of Surgeons, that was 

 obtained by Mr. Hoidsworth at Aripo in Ceylon, and noticed by 

 Prof. Flower (P. Z. S. 1883, p. 488) as closely resembling Sotalia 

 sinensis. There are 31-32 teeth on each side of the upper jaw. 

 The skull is 18-75 inches long (basal length) and 8 broad. 



393. Steno? maculi venter. The spot-helUed DolijMn. 



Pelphinus (Steno?) maculiventer, Oiccm, Ti: Z. S. vi, p. 21, pi. vi, 



tigs. 1,2. 



Sucva, Telegu. 



Teeth 't^. Pectoral and dorsal fins falcate, pectoral apparently 

 about ^ of total length. 



Colour. Above deep shining plumbeous black, becoming paler 

 below; fi-om the chin to the anus ashy grey, with irregular dark 

 spots or blotches. 



