J. W. Hewkes—Medusa from New England. 128 
The ventral frills extend along the axial edge of each of the 
oral arms to the junction of the oral cylinder, while the dorsal 
are simply turned outward and do not extend along the outer 
sides of thé arms, which are smooth and destitute of appen- 
dages. In addition to the three lobes mentioned—two dorsal 
and one ventral—there are others also bearing sucker-frills, 
so that in some instances it is impossible to recognize three 
separate lobes. 
The lobes bear terminally long, gelatinous, filamentary 
appendages called ‘‘ Kolbenformige Gallertknopfe. These bodies, 
always gelatinous and colorless in alcohol, are of varying sizes 
and lengths, sometimes slender, often inflated, short, band- 
shaped. These appendages are numerous.* The smaller ap- 
pendages to the oral cylinder are sixteen in number and are 
known as the scapulettest or upper leaf-like appendages. They 
arise one on each side of the base of the oral arms a short dis- 
tance above the separation, and hang down parallel with the 
oral arms. ‘Two surfaces may be distinguished in each scapu- 
lette—an abaxial convex, and an axial concave side. The 
concave side is smooth, gelatinous, thick, rounded or angular. 
The convex side is more irregular, and lobed, skirted by 
sucker-frills resembling those of the ventral lobes and the axial 
side of the oral arms. The color of the sucker-frills of the 
scapulettes in alcohol recalls that of the sucker-frills of the 
oral lobes. 
The relative position of the scapulettes as compared with the 
oral arms may be seen in my figure. Whether, however, these 
bodies are hidden by the margin of the umbrella when in con- 
traction cannot now be determined. The reader is reminded 
that in my specimen the oral cylinder is broken from the bell, . 
and so far as this goes, our figure is a restoration intended to 
show the bell-margin and the scapulettes, not the relation of 
one to the other. 
Affinities.— Nectopilema is thought to be a member of the 
family of Acraspeda called by Heeckel the Pilemide. The 
family Pilemide Heeck. includes Rhizostomatous Acraspeda_ 
with four separate subgenital cavities,t and with dorsal as well 
as ventral sucker-frills on the eight mouth-arms. No tentacles 
and no central mouth opening, and numerous sucking-frills 
extending along the oral arms perform the functions of the 
*The number and character of these appendages recall what has been de- 
scribed in a Khopilema from the China Sea. They resemble the “ Peitschen Fila- 
menten” of Polyrhiza and others. 
+ This term here used to designate these bodies is the modified “ Scapuletten” 
of Heeckel’s description. It seems to me a better designation for these bodies 
than the term “‘ leaflike appendages” sometimes used in descriptions. 
{ From the mutliated condition of my specimen the structure of the genital cav- 
ities could not be made out. 
