F. S. CONANT ON THE CUBOMEDFS.K. 59 



gc ganglion cell. 



ge gelatine of exumbrella. 



go = gastric ostium. 



gs = gelatine of subumbrella. 

 hvl = horizontal vascular lamella. 

 i = interradius. 



if interradial funnel of bell cavity. 

 ifr = interradial furrow. 

 ivl = interradial vascular lamella. 

 / = lens. 



Iv = lip of valve. 



m bell margin. 

 me = mucous cell. 

 mep mesogonial pocket. 

 mo = mouth. 

 mp = marginal pocket. 



mp' = smaller marginal pockets, in Tripedalia. 

 mst = muscle of stock of sensory club. 

 mt = muscle at base of tentacle. 



n = nerve. 



nc = network cells, in sensory club. 



nf = nerve fibres. 

 nm = nematocj r st. 



nst = nerve of stalk of sensory club. 

 osn = outline of sensory niche. 



p = perradius. 

 pe = pedalium. 

 ph = phacellus. 



pr= proboscis. 

 r = reproductive organ. 



re = remains of concretion. 

 rcl = radial canal. 



rg = radial ganglion. 

 rm radial muscle. 



rn = radial nerve. 

 rns = root of nerve of sensory club. 

 rs ? = remains of stalk (?) of sensory organ. 



rt = retina, 

 s = stomach. 



sc = bell cavity. 



scl = sensory club. 



sen = supporting cell of nerve. 



se = sensory epithelium. 



sh = shrinkage space. 



si = stalk of lens. 

 sla = supporting lamella. 



sn = sensory niche. 



.so = sensory organ in proboscis of Tripedalia. 



sp = stomach pocket. 

 sph = stalk of phacellus. 



ss = stalk of sensory organ, in proboscis. 



.sY = stalk of sensory club. 



