THE HUMPBACK WHALE. 



39 



the males it is frequently studded with tubercles, as upon the head. A bulge 

 also rounds down on the lower part of the "small," nearly midway between the 

 hump and caudal. Its under jaw extends forward considerably beyond the upper 

 one. All these combined characteristics impress the observer with the idea of an 

 animal of abnormal proportions. The top of its head is dotted with irregular, 

 rounded bunches, which rise about one inch above the surface, each covering nearly 

 four square inches of space. 



The following measurements and memoranda of a male Humpback were taken 

 by Captain F. S. Rediicld, of the whaling and trading brig Manuella, while cruising 

 in Behring Sea, September 17th, 18G6 : 



Ft. In. 



Extreme length 49 7 



Length of pectorals > 13 7 



Breadth of pectorals 3 2 



Distance from Riioiit to pectorals 12 



" Distance from corner of mouth to snout. 9 G 



Distance from eye to snout 10 2 



Distance from spout- holes to snout 9 4 



Expansion of flakes 15 7 



Brcadlh of flukes 3 4 



Distance from anus to flukes 11 6 



breadth (of body), 0.25 inches. All the npcei- 

 men.s which have passed under ray observatiou, 

 some eiglit or ton in uumbcr, were mnlos. 



Habitat, on the Humpback Whale [Mrgaplura 

 vcnabiUs, Cope) Monterey, California. 



Otion, Loach. 



Otion, Leach. Ency. Eritannica, suppl. vol. 

 iii, p. 170. 



Olion Slimpsoni, Dall, n. sp. 



Scuta only present, beaked, with the um- 

 bonos on the occludent margins ; anterior pro- 

 longation the longer, pointed, rather slender; 

 posterior i)rolongation, rounded, wider; external 

 margin concave; color (in si^irits), light orange, 

 wjt.li a daric purple streak on the rostral surface 

 and on each side of the peduncle ; while the 

 lateral surfaces of the body -case and lobes are 

 mottled with dark purple. The lower lip of the 

 oriilce is transversely striated and translucent ; 

 the upper margins slightly reflexed internally, 

 white ; in some specimens with two prolonga- 

 tions or small lobes above, which are wanting 



in other specimens. The tubular prolongations 

 very irregular and variable in size and form, 

 usually unsj-ramctrical ; one sometimes nearly 

 abortive. Length of peduncle, 2.08 inches; of 

 body, 2.10 inches; of lobes, 2.00 inches; of ori- 

 fice, 1.18 inch; of scuta, 0.55 inch; width of 

 scuta, O.IG inch. 



Habitat, on the Humpback {31. vcrsabilis); 

 sessile on the Coronulce which infest that spe- 

 cies, but never, so far as I have observed, on 

 the surface of the whale itself. 



Dr. Leach describes five calcareous species, 

 having the scuta, terga, and rostrum of the typ- 

 ical species (0. C'lnieri, Leach) and they are 

 figured by Reeve ; but this species has certainly 

 only the scuta. "Whether this difference is of 

 more than specific value I am not able to de- 

 cide, owing to the great paucity of works of 

 reference here. I should be imwilling to de- 

 scribe the species, were it not that it was sub- 

 mitted to the late lamented Dr. Stimpson for 

 examination, and was pronounced by him to be 

 new. 



