THE SESSILE BARNACLES. 



275 



There are no records from the equatorial and southern Athintic, 

 Antarctic, or Indian Oceans. 



In the Pacific C. diadenia is >videly spread from Bering Sea, 

 Japan, and California south to Xew Zealand, Tonga, and Chili — 

 l^ractically the whole Pacific Ocean.^ 



Dr. "\V. II. Dall notes that " this species has been obtained from the 

 Humpback {Megaptera versah'dh) from Bering Strait to the Gulf 

 of California. It is especially abundant on the flippers and on the 

 underliiD of these animals." Captain Scammon in his interesting 

 book on INIarine Mammals has given a figure of the humpback Avhale 

 showing the areas chiefly infested with barnacles — the underlip and 

 throat, front edges of the fins, and the flukes. The opercular mem- 

 brane in the living barnacle is brown, the "hood" slightl}^ purplish. 



Locality. 



Collector. 



Notes. 



Godliaven, Disco Island, Greenland . 



Shetland Islands 



Snooks Arm, Newfoundland 



Nova Scotia 



St. Bartholomew, AVest Indies. 



Bering Island 



Igognak Point, Unalaska 



Unalaska 



Alaska 



Neah Bay, Wash 



Mouth of Umpqua River, Oreg... 



Near Pigeon Point, Cal 



Monterev, Cal 



Do.: 



Magdalena Bay, Lower California. 

 Tonga Island 



(No locality). 

 (No label)... 



J. G. Jefl'revs. 

 F. W, True. . 



L. Stejneger. . 

 Wm. H. Dall. 

 do 



Mrs. E. H. Harrinian 



J. G. Swan 



Doctor Holbrook 



Stanford University 



Taylor 



Captain Scammon 



A Ibatross 



Ward's natural science es- 

 tablishment. 

 Vinal Edwards 



On lip of humpback; alco- 

 holic. 



On Mcgaptera 

 Cope. 



In alcohol. 



From whale; in alcohol. 



On humpback. 



Dry and in alcohol. 



On whale skiu; in alcohol. 

 On whale skin. 



CORONULA REGIN^ Darwin. 



Plate 64. 



1854. Coronula reffuuc Darwin, ]Moiiogra]ili, p. 419, pi. 15, fi.£ 

 fig. 4. 



5; pi. 16, 



Distribution. — Northern Atlantic and Pacific Oceans,' on hump- 

 back wales {Megaptera). 



Shell convexly-conic or depressed-conic, with flattened parietal 

 ribs having crenated edges and beautifully striated and granulated 

 surfaces (pi. 64, figs. 1, 3). Eadii not exceeding one-fifth the thick- 

 ness of a compartment (pi. 64, fig. 1). Body-chamber cup-shaped, 

 the basis much smaller than the orifice. Eibs in the base branching 

 irregularly^ as in C. diadema, not symmetrically on both sides of the 

 sutures as in C. covrhplajwia. Terga wanting. 



Diameter 65 mm.; height 19 mm. (Unalaska). 



1 Weltner has materially enlarged our knowledge of the southern range of this barnacle, 

 from the rich series in the Berlin Museum. 



