General principles of zoology . FIG. 81.—Spongilla Jlutiatilis. (After Huxley.) a, superficial layer with dermal pores ; lieregion of the ciliated chambers; d, osculum. 2. Homaxial, symmetrical in all directions, sphericalfundamental form (Fig. 82). 3. Monaxial, radially symmetrical (Fig. 83). 4. Simple heteraxial, biradially symmetrical (Figs. 84,85). 5. Double heteraxial, bilaterally symmetrical (Fig. 86).i. AnaxialQ*asymmetrical animals, so called, are those JOO GENERAL PRINCIPLES OF FIG. 82.— Haliomma erinaceus. n, external,/, internal, latticed spherical skeleton; ck, cen-tral c
General principles of zoology . FIG. 81.—Spongilla Jlutiatilis. (After Huxley.) a, superficial layer with dermal pores ; lieregion of the ciliated chambers; d, osculum. 2. Homaxial, symmetrical in all directions, sphericalfundamental form (Fig. 82). 3. Monaxial, radially symmetrical (Fig. 83). 4. Simple heteraxial, biradially symmetrical (Figs. 84,85). 5. Double heteraxial, bilaterally symmetrical (Fig. 86).i. AnaxialQ*asymmetrical animals, so called, are those JOO GENERAL PRINCIPLES OF FIG. 82.— Haliomma erinaceus. n, external,/, internal, latticed spherical skeleton; ck, cen-tral capsule; w£, extra capsular soft parts; «, nucleus. zr *
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1896
