85 



LAGENOBHYNCHTTS BBEVTCEPS, Pucheran. The Short-headed 



Lagenorhynchus. 



Synonyms Delphinus fireviceps, Pucheran. Voy. Dumont d'TJrville. 

 Lagenorhynchus Ireviceps, Gray, S. and "W., p. 271. 

 Electro, breviceps, Gray, Suppl., p. 76. 



Teeth && about four in an inch. 



Blackish above, underneath white, pectoral fins dusky. 



Inhab : Eio de la Plata. 



*** Teeth five to six in an inch. 

 LAGENOBHYNCHTTS LETJCOPLETJRUS, Easch. The White-sided Bottle-nose. 



Synonyms Delphinus tursio, Knox. 1838. 



Delphinus leucopleurus, Easch. 1843. 

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

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



Teeth %&, 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 1 inches ; weight of skeleton, 7| 

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

 to 70| inches." 



Inhab : North Sea, Orkney, Gulf of Christiana. 



CLANCULTis, Gray. The Pacific Lagenorhynchus. 



Synonyms LagenorhyncJius clanculus, Gray, S. and "W., p. 271. 



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

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

 Teeth g|, five in an inch. 



LAGENOBHYNCHTJS CBTJCIGEBA, Gervais. 



Synonyms LagenorhyncJius crucigera, Gervais, Oib. Get. 



Electro, cruciqera, Gray, Suppl., p. 77. 

 Teeth (?) 



LAGETTOBHYNCHTJS THICOLEA, Gray. The Thicolea. 



Synonyms LagenorJiyclius Tliicolea, Gray, S. and "W., p. 271. 



Electro. Thicolea, Gray, Suppl, p. 77. 

 Teeth STS, slender, curved, elongate, six in an inch. 

 Described from the skull only. 

 Inhab. West Coast of North America. 



