| afr | = | adradial furrow. |
| afr´ | = | furrow in Tripedalia that separates perradial from interrad. regions in lower half of bell. (In Charybdea the same furrow is directly continuous with afr.) |
| ax | = | axis of nerve. |
| c | = | concretion. |
| cc | = | canal underneath ivl, connecting the two adjacent marginal pockets. |
| ccl | = | circular canal. |
| ci | = | cilia. |
| cm | = | circular muscle. |
| co | = | cornea. |
| cp | = | capsule of lens. |
| cs | = | covering scale of niche. |
| csc | = | canal of sensory club. |
| ct | = | canal of tentacle. |
| ct´ | = | beginning of canals of lateral tentacles in Tripedalia. |
| ec | = | ectoderm. |
| ece | = | ectoderm of exumbrella. |
| ecs | = | ectoderm of subumbrella. |
| ed | = | distal paired eye. |
| el | = | larger unpaired eye. |
| en | = | endoderm. |
| enc | = | endoderm of sensory club. |
| enf | = | tract of nerve fibres underlying endoderm. |
| enfl | = | endoderm of floor of stomach. |
| enp | = | endoderm of stomach pockets. |
| enr | = | endoderm of roof of stomach. |
| ens | = | endoderm of stomach. |
| ep | = | proximal paired eye. |
| es | = | smaller unpaired eye. |
| fc | = | funnel leading into canal of sensory clubs. |
| fp | = | fibre from subepithelial plexus of subumbrella. |
| fph | = | filaments of phacellus. |
| frn | = | frenulum. |
| ft | = | funnel-shaped depression in ectoderm axial to base of tentacle. |
| g | = | gelatine. |
| 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. |
| l | = | lens. |
| lv | = | lip of valve. |
| m | = | bell margin. |
| mc | = | 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 | = | nematocyst. |
| nst | = | nerve of stalk of sensory club. |
| osn | = | outline of sensory niche. |
| p | = | perradius. |
| pe | = | pedalium. |
| ph | = | phacellus. |
| pr | = | proboscis. |
| r | = | reproductive organ. |
| rc | = | 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. |
| scn | = | supporting cell of nerve. |
| se | = | sensory epithelium. |
| sh | = | shrinkage space. |
| sl | = | 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. |
| st | = | stalk of sensory club. |
| su | = | suspensorium. |
| sub | = | subumbrella. |
| tl | = | lateral tentacle. |
| tm | = | median tentacle. |
| v | = | velarium. |
| va | = | vacuole. |
| vb | = | vitreous body. |
| vc | = | velar canals. |
| ve | = | edge of velarium. |
| vfs | = | visual fibres, according to Schewiakoff. |
| vg | = | valve of gastric ostium. |
| vl | = | vascular lamella. |
| vlc | = | vascular lamella connecting vls with vlm. |
| vlm | = | vascular lamella of margin. |
| vls | = | vascular lamella of sensory niche. |
| vlst | = | vascular lamella of sensory niche at base of stalk. |
| wc | = | wandering cells. |
| w-x-y-z | = | successive levels of Figs. 40-43 on Fig. 5. |