Medusce and Ctenophora 13h 



On the other hand the peduncle in both specimens is round, instead of 

 showing the four longitudinal grooves observed by Kishinouye. In other 

 respects they so closely agree with his description that no further account is 

 needed here. 



The original records of this species being from Bering island, Commander 

 group (Kishinouye, 1899; Mayer, 1910), the present captures extend its known 

 range across the breadth of Bering sea. But in this there is nothing surprising, 

 the Medusa fauna of the latter, so far as known, being decidedly uniform across 

 its whole breadth (1913). 



DiSCOrHORA. 



Family PELAGID^ Gegenbaur. 

 Chrysaora «p.? 



Station 42a, Bernard harbour, Dolphin and Union strait (washed up on 

 beach); September 1, 1915; 1 fragmentary specimen. 



Unfortunately this large specimen is now merely a mass of broken fragments, 

 only the central part of the disc, with the mouth arms, being reasonably intact. 

 It is impossible to identify it further than that it is certainly a pelagid, and 

 probably a Chrysaora. Its diameter, when taken, is given in Mr. Johansen's 

 field notes as 11 inches (about 280 mm.), with mouth arms about 300 mm. and 

 tentacles about 75 mm. long. The colour is described as follows: " The sixteen 

 radial stripes and the marginal tentacles were dark brown (the former darkest) ; 

 gonads and filaments on the four mouth tentacles (arms) light brown; other- 

 wise the Medusa was pale yellow transparent." 



The specimen is now so thoroughly stained with iron rust that no trace 

 of its normal colouration is to be seen. 



Unfortunately this does not suffice to identify the specimen specifically, 

 for not only are the relationships of the various described members of this genus 

 still a puzzle, but the colouration of all those of which any considerable number 

 have been studied, is extremely variable (Mayer, 1910, p. 580). Chrysaora, 

 though primarily at home in temperate seas, is already kriown from the sea of 

 Okhotsk (Kishinouye, 1910, p. 12). And in the North Pacific one or other 

 " species " of the genus is known from Saghalin island; frorn Kamtschatka, 

 the Aleutians, and thence southward to San Francisco bay in Californ,ia. It 

 is recorded (C. melanaster) from the neighbourhood of point Barrow (Fewkes, 

 1885, Murdoch, 1885). It is also recorde;d from Greenland (Aurivillius, 1896, 

 fide Morch, 1857). But it is by no means certain that this early record can 

 be relied on, and it has not been accepted by Kramp (1914). 



Family CYANEID^ L. Agassiz. 

 Cyanea capillata var. capillata (Linnaeus), Eschscholtz. 



Medusa capillata Liimseus, 1758, vol. 1, p. 660. For synonymy and synopsis of varieties, 

 see Mayer, 1910, pp. 596, 597. 



Station 20/, Grantley harbour, port Clarence, Alaska; August 3, 1913; 

 2 juv. specimens, both about 40 mm. in diameter. 



Station 57a, cape Smyth, point Barrow, Alaska, August 8, 1916; 4 young 

 specimens, 8-20 mm. in diameter, somewhat fragmentary, but yet well enough 

 preserved to show their identity. At this same locality, according to Mr. Johan- 

 sen's notes, many Cyanea, large (1-2 feet in diameter) and small were seen, 

 drifting northward with the strong current. 



