ClipArt ETC
"Diagram showing possible modifications of medusiform and hydriform persons of a colony of Siphonophora. n, pneumatocyst; k, nectocalyces (swimming bells); l, hydrophyllium (covering-piece); i, generative medusiform person; g, dactylozooid with attached tentacle, h; e, nutritive hydriform person, with branched grappling tentacle, f; m, stem. The thick black line represents endoderm, the thinner line ectoderm." — Encyclopedia Britannica, 1893

Siphonophora

"Diagram showing possible modifications of medusiform and hydriform persons of a colony of Siphonophora.…