. Elementary text-book of zoology [electronic resource]. Zoology. 202 ANNULATA. The fiephridia are numerous, a pair occurring in nearly every segment They are complex coiled tubes with an internal funnel, a coiled excretory part and a small bladder or vesicle leading to the exterior. The funnel always opens into the coelomic compartment in front of the one in which the bulk of the nephridium Respiration appears to be carried on by the skin. The worm is hermaphrodite. The male organs consist of two „ ... pairs of testes lying in the loth and iith seg- Reproductive. * ^ r^., i j • i u u r
. Elementary text-book of zoology [electronic resource]. Zoology. 202 ANNULATA. The fiephridia are numerous, a pair occurring in nearly every segment They are complex coiled tubes with an internal funnel, a coiled excretory part and a small bladder or vesicle leading to the exterior. The funnel always opens into the coelomic compartment in front of the one in which the bulk of the nephridium Respiration appears to be carried on by the skin. The worm is hermaphrodite. The male organs consist of two „ ... pairs of testes lying in the loth and iith seg- Reproductive. * ^ r^., i j • i u u rnents. 1 \ ey are enveloped m the large branch ing seminal vesicles, from which there pass a pair of Tasa deferentia backwards to open on the 15th segment. The pair oi ovaries lie in the 13th segment, and the oviducts, vAith funnels opening into the same segment, run throu_h the septum and open to the exterior on the 14th segment. Two pairs of spennatheccB or small spherical sacs open between 9 and 10 and between 10 and 11 on each side. The eggs are laid in cocoons and undergo an embryonic development. [ 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 Masterman, Arthur Thomas; Parsons, John Herbert, Sir, 1868-1957, donor; S. H. Lazarus (Firm); University College, London. Library Services. Edinburgh : E. & S. Livingstone
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1901
