. The Cambridge natural history. Zoology; Zoologia Geral. FIG. 22.—Collozomn hiermr. A, B, C, three forms of colony ; D, small colony with central capsules (), containing nuclei, and alveoli (rac) in ectoplasm; E, isospores, with crystals (c) ; F, anisospores ; mi, nucleus. (From Parker and Haswell.) II. OSCLTLOSA (MOXOTRYPASTA).—Monaxonic ; pores of central capsule limited to the basal area (osculum), sometimes accompanied by two (or more) smaller oscula at apical pole, mostly zonarial or abyssal. C. NASSELLARIA (MONOPYLAEA).—Central capsule ovoid, of a single layer ; pores numerous on
. The Cambridge natural history. Zoology; Zoologia Geral. FIG. 22.—Collozomn hiermr. A, B, C, three forms of colony ; D, small colony with central capsules (), containing nuclei, and alveoli (rac) in ectoplasm; E, isospores, with crystals (c) ; F, anisospores ; mi, nucleus. (From Parker and Haswell.) II. OSCLTLOSA (MOXOTRYPASTA).—Monaxonic ; pores of central capsule limited to the basal area (osculum), sometimes accompanied by two (or more) smaller oscula at apical pole, mostly zonarial or abyssal. C. NASSELLARIA (MONOPYLAEA).—Central capsule ovoid, of a single layer ; pores numerous on the operculum or basal field ; skeleton siliceous, usually with a principal tripod or calthrop-shaped spicule passing, by branching, into a complex ring or a latticed bell-shaped shell ; nucleus eccentric, near apical pole. D. PHAEODARIA (CANNOPYLAEA, Haeck.; TRIPYLAEA, Hertw.).—Central capsule spheroidal, of two layer?, in its outer layer an opercuhim, with radiate ribs and a single aperture, beyond which protrudes the outer layer; osculum basal, a dependent tube (proboscis) ; accessory oscula, when present, simpler, usually two placed sym- metrically about the apical pole ; skeleton siliceous, with a com- bination of organic matter, often of hollow spicules; nucleus sphaeroidal, eccentric; extracapsular protoplasm containing an accumulation of dusky pigment granules (" phaeodium ").. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harmer, S. F. (Sidney Frederic), Sir, 1862-; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. [London, Macmillan and co. , limited; New York, The Macmillan company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1906
