Euechinoidea (uekinoidea)

pl. [NL., Euelephas (u-el'e-fas), n. [NL. (Falconer), euemerism euemerism, euemerist, etc. See euhemerism, etc. Euereta (u-er'e-tä), n. pl. [NL., the anterior pair are much the longer, converted into pad. dles, the digits being flattened and bound inımovably together by integument, and only one or two of them bearing nails. See Sphargis and Chelone.