Crossword-Solution: ECHINOID 8 letters, 3 clues 🏆 scrabble score: 14

Thus the elements of the Pelmatozoan ventral groove are now detected in so different a structure as the echinoid ambulacrum, while an aboral nervous system, the diminished representative of that in crinoids, has been traced in all Eleutherozoa except Holothurians.

This would leave the Echinoid scheme remarkably simple, with the Melonitoida and Cidaroida as divergent branches from an ancestor like _Bothriocidaris_; but while the former branch soon decayed, the latter continues to flourish at the present day.

Pluteus of the Echinus:—_a_, mouth; _b_, stomach; _c_, echinoid disk; _d d d d_, four arms of the pluteus-body; _e_, calcareous framework; _f_, ciliated lobes; _g g g g_, ciliated processes of the proboscis.] The Echinidæ are male and female, and the eggs are excluded through the five perforated productive plates at the posterior end of the shell.

The native women are the chief hunters for echinoidæ, and during the whole spring and summer seasons they will be seen at both islands, wading in the pools at low water, with their scanty skirts high up, eagerly laying possessive hands upon every “bristling egg” that shows itself.

The former are notched at their upper ends, and in all probability represent the auriculae of Echinoidea, as the radial nerve-cords pass out over the notches, whilst the interradial pieces probably represent a coalesced pair of jaws and their included tooth, since these ossicles develop from a single rudiment in the larval Echinoid.