280 
Of this splendid medusa several pretty specimens have been 
caught in deep water hauls in the Davis Strait. The specimens 
from Stat. 436 were taken with the trawl, fishing near the bottom 
but not touching, at 644 meters depth. The specimens from Stat. 
348, 434 and some from 333 were dead. Moreover a fairly large 
specimen has been taken out of the stomach of a shark, Centro- 
scyllium Fabricii Reinhardt, captured at Stat. 429, 8-VI-1909, 
63? 54' N. Lat., 53? 15' W. Long., 980—1390 m. 
Atolla Bairdi is an Atlantic deep sea medusa, distributed 
throughout the North Atlantic and taken by the "Valdivia" (Van- 
håffen 1902 a) in the region of the Guinea current, 0? 25” N, Lat. 
— 3 55' N. Lat. and 0? 31' E. Long. — 7? 48' E. Long. It has 
mostly been captured at considerable depths; very rarely it has 
been found in the upper layers of the water. 
Stations: 
saks VE bong. m. Wire 
322 60? 07/ 489 26' 2000 T 
333 63? 18' 549 55' 1530 + 
336 64? 06' 559 8! 1200 EN 
"888 64? 01! 55? 80 1400—-1500 
"344 64? 292! 55? 48' 1200 IT 
"345 ne: 29" 55? 57" 1000 IX 
348 64? 35! 56? 18' Tr 
"434 62" 58! 54? T8! 1500—1200 r 
436 63? 16' 529 21' (near bottom) rr 
Aurelia flavidula Péron & Lesueur. 
Figs. 3—4. 
Medusa aurita Fabricius 1780 p. 363. 
Aurellia flavidula Péron og ner 1809 p. 359. 
Aurelia avenue Lesson 1848 p. 376. 
— Levinsen 1892 p. egg 
— inder Vanhåffen 1906 p. 6 
non  — — Brandt 1885 p. 372 fer Å 
The Greenlandic form of Aurelia differs in certain respects 
from the typical American Aurelia flavidula. 
The oral arms are nearly as. long as the radius of the disc; 
