281 
they are somewhat broader (and longer) than. in Å. aurita, but 
they are not lobed proximally as in the typical A.. flavidula; this 
possibly may be owing. 
to the fact that the 
preserved specimens are 
Eee 
$ g 
(g 
SS 
not completely grown 
g SG SØD É 
ISJEDA 
SELEN, 
SUIT 
Je 
DEReg 
Fig. 3. 
(the largest ones are ca. 
9 cm. in diameter). — 
The gonadial radius is 
ca. ”[5—]/2 of the radius 
of the disc. The inci- 
sions of the disc-margin as in 4. aurita and flavidula. — The 
canals are comparatively broad; they run somewhat sinuously and 
rather frequently they send out short blind branches. The branches 
of the canals anastomose exceedingly often; towards the disc-margin, 
in consequence, there are a great many short meshes, more than 
JE OUTER bon, 
SS SR 
SLY? 
NOD) DD 
V 
Fig. 4. 
in the case of the typical 4. flavidula. In A. aurita, as known, 
the branches are few and narrow and do not anastomose or rarely 
do so. In this regard the Greenlandic form has some likeness with 
Å. limbata Brandt, but there is no trace offsecondary incisions in 
