The Cambridge natural history, Vol. 01 (of 10)

by Marcus Hartog; Sydney J. Hickson; E. W. MacBride; Igerna Brünhilda Johnson Sollas

of Carpoidea, [596];

of young Ophiuroid, [613]

Ambulacral ossicle, of Asteroidea, [432];

of Asterias rubens, [434];

of Ophiothrix fragilis, [481];

compared to auricula of Echinus esculentus, [526];

to inner plates of Palaeodiscus, [557];

to side-plates of Crinoidea, [589]

Ambulacral plate, of Echinus esculentus, [511];

of Cidaridae, [533];