123 



Phtsalus ANTAECTicua, Gray. The Antarctic Pinner. 

 Synonyms — Physalus antarcticus. Gray, S. & "W"., p. 164. 



Sihbaldius ? antarcticus, Gray, S. & "W"., p. 381, Suppl., p. 55. 

 jBolwnoptera antarctica, Van Beneden. 



" There has been imported from New Zealand a quantity of finner- 

 fins, or baleen, which are all yellowish- white ; this doubtless indicates a 

 distinct species." (Gray, p. 164.) 



Inhab. Buenos Ayres. 



Oenus SiBBALDitrs, Gray. 

 Dorsal fin very small, far behind, and placed on a thick prominence ; 

 vertebrae 56-58 ; ribs, fourteen pairs ; nasal bones elongate, narrow, flat, 

 or very slightly hollowed on the sides of the upper surface ; lower jaw 

 with a comparatively slight curve, and a low, obtusely pointed coronoid 

 process ; cervical vertebrEe free ; head of the first rib bifurcated, articu- 

 lating with the seventh cervical and first dorsal vertebrae respectively ; 

 sternum very small, short, broad, somewhat lozenge-shaped. {Princi- 

 pally from Flower.) 



SiBBALDirs LATiCEPs\ Gray. Broad-headed Pinner. 



Synonyms — Ealcena rostrata, Eudolphi. 

 Porqual du Nord, Cuvier. 

 Pterohalaina hoops, Eschricht. 

 Sihbaldius laticeps, Gray, S. & W., p. 170. 

 Palmnoptera horealis, ou laticeps, Bened. & Gervais. 

 Rudolphius laticeps, Gray, Suppl., p. 54. 



The colour of this whale is black above and white underneath ; the 

 pectoral fins, according to M. Van Beneden, are entirely black, and not 

 relieved at their base by any white, as in the Pike-whale, B. rostrata. 



The total lengths varied from 31| to 40 feet, but the animals were 

 young from whom the measurements were taken. The vertebrte, ribs, 

 and other bones are small and of delicate structure. 



Inhab. Worth Sea, Norwegian coasts, Zuyder Zee, &c. 



This small cetacean was usually confounded with its smaller neighbour, 

 the Balaena rostrata of MuUer and O. Pabricius, until Dr. Gray, in 1846, 

 detected and clearly pointed out the difference in their anatomy. 



iSiBBALDius BoKEALis^, Lesson. The Plat-back, or the Ostend Whale. 



Synonyms — Baleine d''ostend, Van Breda. 



The Ostend Whale, Guide to Exhib. Char. Cross. 



BalcBnoptera gigas, Esch. & Eeinh., 1857. 



Pterohaltsna gigas, Van Beneden, 1861. 



Sihbaldius horealis, Gray, 1866, S. & "W., p. 175. Suppl., p. 



55. 

 Plowerius gigaSj Lilljeborg, 1867. 



' Lotus, broad, ce^ps, from caput, the head. 

 ' Borealis, northern. 



