85 



BKEVICEPS, Pucheran. The Short-headed 

 Lagenorhynchus. 



Synonyms Delpliinus breviceps, Pucheran. Voy. Dumont d'Urville. 

 Lagenorhynchus breviceps, Gray, S. and W., p. 271. 

 JSlectra breviceps, Gray, Suppl., p. 76. 



Teeth 29^9 about four in an inch. 



Blackish above, underneath white, pectoral fins dusky. 



Inhab : Eio de la Plata. 



*** Teeth five to six in an inch. 

 LAGENOEHYNCHTJS LETTCOPLEUETTS, Easch. The "White-sided Bottle-nose, 



Synonyms DelpJiinus tursio, Knox. 1838. 



Delphinus leucopleurus, Easch. 1843. 

 Lagenorhynchus leucopleurus, Gray, S. and W., p. 273. 

 Leucopleurus arcticus, Gray, Suppl., p. 78. 



Teeth 25:25, nearly five to the inch. 



Above bluish black, beneath white with a large oblique grey or 

 white longitudinal streak on the hinder part of each side. 



Of a female (the skeleton now in the Edinburgh Museum) of this 

 species, captured at the Orkneys in May, 1835, Mr. Knox gives the 

 following interesting particulars : " It weighed 14 stone. Length 

 from tip of beak to centre of tail, 77^ inches ; weight of skeleton, 7 

 Ibs. ; length of cranium, 15 inches ; of spinal column, 55^ inches, equal 

 to 7(H inches." 



Inhab : North Sea, Orkney, Gulf of Christiana. 



LAGENOEHYNCHUS CLANCULTJS, Gray. The Pacific Lagenorhynchus. 



Synonyms Lagenorhynchus clanculus, G-ray, S. and "W., p. 271. 



Hector, Trans., N. Z. Institute, 1870, p. 27. 

 Electro, clancula, Gray, Suppl., p. 77. 



Teeth |i|, five in an inch. 



LAGENOEHYNCHTJS CEUCIGEEA, Gervais. 



Synonyms Lagenorhynchus crucigera, G-ervais, Oib. Get. 



Mectra crucigera, Gray, Suppl., p. 77. 

 Teeth (?) 



LAGENOEIIYNCHUS THICOLEA, G-ray. The Thicolea. 



Synonyms LagenorJiycJius Thicolea, Gray, S. and W., p. 271. 



Mectra Thicolea, Gray, Suppl.> p. 77. 

 Teeth 5^5, slender, curved, elongate, six in an inch. 

 Described from the skull only. 

 Inhab. West Coast of North America. 



