BlGELOW: MEDUSAE AND SIPHONOPHORAE. 411 



Abylopsis TETRAGONA (Otto). 



Pyramis tetragona Otto, 1823, p. 306, taf. 42, fig. 2a-2c. 

 (For synonjTny see Bigelow, 1911b, p. 224). 



This well-known species was taken at Stations 10,161, 10,162, 

 10,163, 10,166, 10,169, 10,171, 10,173, 10,176, 10,178, 10,180, 10,182, 

 10,186, 10,192, 10,196, 10,197, 10,200, 10,202, 10,203, 10,208, 10,209, 



10.211, 10,212; both in surface and intermediate hauls, about 200 

 specimens. The free eudoxid was taken at Stations 10,161, 10,169, 

 10,192. The specimens, all more or less damaged, agree so well with 

 previous descriptions that no account of them is necessary. 



Abylopsis eschscholtzii (Huxley). 



Aglaismoides eschscholtzii Huxley, 1859, p. 60, pi. 4, fig. 2. 

 (For sjTQonymy, see Bigelow, 1911b, p. 226). 



The polygastric generation was taken at Stations 10,161, 10,163, 

 10,169, 10,^171, 10,176, 10,178, 10,186, 10,188, 10,192, 10,197, 10,207, 



10.212, about 75 specimens; the free eudoxid at Stations 10,161, 

 10,169, 10,171, 10,188, 10,192. 



Bassia bassensis (Quoy and Gaimard). 



Diphyes bassensis Quoy & Gaimard, 1834, p. 91, pi. 7, fig. 18-20. 

 (For synonymy, see Bigelow, 1911b, p. 229). 



The polygastric generatioii of Bassia bassensis, or its free eudoxid, 

 was taken'^at Stations 10,161, 10,162, 10,163, 10,169, 10,176, 10,178, 

 10,180, 10,182, 10,188, 10,192, 10,208, 10,210, and 10,212, about 50 

 specimens of each. The records are both from surface and from 

 intermediate hauls. 



There is no difficulty in recognizing such characteristic nectophores 

 as those of this species, though the material is in poor condition. 



Ceratocymba sagittata (Quoy and Gaimard). 

 Plate 5, fig. 5; Plate 6, fig. 1-3; Plate 7, fig. 1-5. 



The free eudoxid has been described as : — 



Cymba sagittata Quoy & Gaimard, 1827, p. 16, pi. 2c; fig. 1-9; Eschscholtz, 

 1829, p. 134; Lesson, 1843, p. 4.54. 



