504 DE W. S. BRUCE 



width posteriorly until a point about opposite the anus is reached, after which it 

 again increases in width and joins the black of the tail. Between the median and 

 lateral black bands and on the belly the colour is white, more or less pure. 

 (D'Orbigny and Gervais.) 



28 

 ' Teeth - ; skull smaller than that of L. acutus, but similar in proportions. 



28 



Rostral portion of premaxillaa flat, not twisted into a vertical position at the distal 

 extremity ; their outer margins straight ; triangular area high, flat, and smooth ; 

 temporal fossae moderate, oval directed backwards ; pterygoid bones in contact in 

 the median line, moderate, very short antero-posteriorly, not keeled laterally ; 

 the conjoint postero-internal free margin transverse, as in L. acutus ; vomer 

 extending along three-fourths of the rostrum, appearing on the palate as a 

 narrow ridge. 



"Measurements of the Skull (Mus. d'Hist. Nat., Paris, No. a 3045, type). Total 

 length, 34'9 cm. ; length of rostrum, 17'8 cm. ; breadth of rostrum at the base, 

 10'7 cm. ; at its middle, 6'6 cm. ; breadth of intermaxillae at same point, 4'1 cm. ; 

 breadth between orbits, 17'1 cm. ; length of temporal fossa, 6'9 cm. ; depth of 

 temporal fossa, 4'1 cm. 



" Habitat. Seas south of Cape Horn ; Pacific Ocean." 



In the museums of Britain and of the Continent there is great lack of material 

 for the comparative study of the larger forms of Cetaceans. 



Through the general interest of some owners, however, front fins of many of 

 the species and other parts have recently enriched collections, and have enabled 

 the comparative anatomist to arrange phalanges, carpals, and other bones in 

 their skeletons and make models in a manner truer to their actual disposition in 

 the living animal. 



What is really required are several scientific Cetacean expeditions with different 

 classes of ships : (l) one a well-protected ice ship, such as the Scotia, adequately fitted 

 with all the usual equipment for the fishing of Balsena mysticetus within the limits 

 of the polar pack ; (2) another a thoroughly modern whaler of the Norwegian type, 

 for securing different species of whales outside the ice limit, and the free use of a 

 whaling-station ship for a definite time ; (3) a third ship especially fitted out for the 

 hunting of smaller Cetacea ; (4) and, fourth, a vessel that will devote itself to following 

 the tracks of whales, to give us definite information regarding migration and 

 breeding habits. There should be no question of making these ships pay by hunting 

 for other than scientific purposes, although other scientific observations and collec- 

 tions should be made, such as temperature, salinity, and plankton as far as they 

 are definitely associated with the food supply and life of the whale. 



The question of migration is of very special interest. Unlike almost all other 

 marine animals, there are indications that whales, if not the smaller Cetacea as well, 

 are not so dependent on the temperature of the water remaining moderately constant, 



