116 
el 
da 
ex 
Fig. 2. 
Fig. 2° 
March, 1881. 
BULLETIN OF THE MUSEUM OF COMPARATIVE ZOOLOGY. 
. Rossia sublevis Verr. Pen from 9 (see Plate III. fig. 2), enlarged four di- 
ameters. 
. Rossia Hyatti Verr. 9 Suckers, enlarged fifteen diameters; a, one of the 
largest from third pair of arms, side view; b, c, two forms of suckers from 
tentacular club. 
. Rossia megaptera Verr. 9 Suckers, enlarged fifteen diameters; «a, front 
view of one of the largest from third pair of arms ; b, c, d, three suckers from 
the tentacular club. 
PLATE VIII. 
. Alloposus mollis Verr. d Side view, showing the sac containing the hecto- 
cotylized arm, cut open, so as to expose the partially developed arm. One 
half natural size. 
Fig. 1* The same. Hectocotylized arm removed from the sac, enlarged two diame- 
ters. 
The same. 9 Ventral view, one half natural size. 
. The same. © Dorsal view, one half natural size. 
