156 EXPEDITION OF TJIE "2VLBATIIOSS," 1899-1900. 



cirri which alternate in position with the lips of the medusa. Each of 

 these groups contain from four to seven cirri. The gelatinous substance 

 is slightly blui-sh or milky in color, and the genital organs are dull cream or 

 slightly ochre colored. In the majority of specimens there are no spots 

 upon the ex-umbrella, but in some there is a brownish or yellowish spot 

 \ipon the upper surface of each of the eight lappets. This form appears to 

 differ from the Atlantic-Mediterranean species only in its duller coloration 

 and the frequent absence of spots upon the ex-umbrella. Compare the Figure 

 we here present with the drawing of the Atlantic species given in the Bull. 

 Mus. Comp. ZoOl., Vol. XXXVIL, Plate 26, Fig. 87. 



We obtained this medusa in considerable numbers in Neiafu Harbor, 

 Vavau Island, Tonga, on December 5 and 6, 1899, and we also found it 

 among the Fiji Islands in December, 1897. Our Figure is taken from a 

 specimen obtained near Suva, Fiji. 



Atolla Alexandri Maas. 



AtoUa Alexandri Maas, 1897 ; Jlem. Mus. Comp. Z06I., Vol. XXIII., No. 1, p. 81, Taf. XI., 

 Fig. 2, Taf. XIV., Figs. 4, 5. 



A single specimen, in good condition, was brought up in a bottom trawl 

 at 830 fathoms between Ua Huka and Marchand Islands, Marquesas, on 

 September 14, 1899. It was 24 mm. in diameter, and there were forty- 

 eight marginal lappets and twenty-four tentacles. A number of specimens 

 of this deep-sea form were obtained by the "Albatross" in 1891 in trawls 

 made off the Pacific coasts of Mexico and Central America. 



Linerges aquila Haeckel. 



Llnerges aquila Haeckei,, K., 1880; Syst. der Medusen, p. 49G. 



An immense swarm of ephyrai of this species, all about 3 nun. in 

 diameter, were found in the lagoon of Ilikueru Island, Paumotus, on 

 October 27, 1899. Another swarm of somewhat older medusae was met 

 with in the lagoon of Funafuti, Ellice Islands, ou December 24-25 ; and 

 a single mature individual was captured in the lagoon of Rongelab Atoll, 

 Marshall Islands, on January 17, 1900. We found large numbers of both 

 ephyrie and mature medu.sa) of this species among the Fiji Islands in 1897.' 



1 Agas.siz and Mayer, 1899; Bull. Mus. Comp. Zuol., Vol. XXXII., p. 170, PI. 10, Figs. 33, 34. 



