A treatise on zoology . Fig. XXXVIII. Tegmen of Euspiroertnvs spiralis, sliowiirj; four cordi-foriu deltoids or orals, and a madreporitf, with aiiibu-lacrals overlying tluir apposed edti,es. In the i»os-terior iiiterradius is the. base of the broken off aiuiltube. (From Bather, 1893.) x 3. Fig. XXXIX. Tegmen of Ci/athncrinv!?. 1, with ambulacrals and inter-ambulacrals removed, exposingapposed edges of orals (A) andmadreporite (M). 2, (J. mammillariswith ambulacrals (rp) and interani-bulacrals (ia) almost entindy cover-ing orals (A) and i)eristome. (Fromleather, 1S92.) x 2. axillary Am
A treatise on zoology . Fig. XXXVIII. Tegmen of Euspiroertnvs spiralis, sliowiirj; four cordi-foriu deltoids or orals, and a madreporitf, with aiiibu-lacrals overlying tluir apposed edti,es. In the i»os-terior iiiterradius is the. base of the broken off aiuiltube. (From Bather, 1893.) x 3. Fig. XXXIX. Tegmen of Ci/athncrinv!?. 1, with ambulacrals and inter-ambulacrals removed, exposingapposed edges of orals (A) andmadreporite (M). 2, (J. mammillariswith ambulacrals (rp) and interani-bulacrals (ia) almost entindy cover-ing orals (A) and i)eristome. (Fromleather, 1S92.) x 2. axillary Amb, increase in size, and form prominent bosses on thetegmen, called radial dome-plates (Fig. XLII.); the effect ofthis is enhanced by the sinking of the other ambulacrals (
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectzoology
