. A manual of zoology. 210 MANUAL OF ZOOLOGY sect. very similar to that of the eyes. The function of the lateral sense organs is unknown. The leech is moncecious. There are nine pairs of testes (Fig. 119, ts), in the form of small spherical sacs situated in segments 12-20. Each gives off from its outer surface a narrow efferent duet, which opens into a common vas deferens (v. d). In the tenth segment the vas deferens increases in width and forms a complex coil, the vesicula seminalis „.^-,^v-,-,-,--^.. J \ imwi5^:,m)>p»mm»!^-;iW!v»vw«w"i-'.,«.-,..iniv m»w'i ,.«. Please note that
. A manual of zoology. 210 MANUAL OF ZOOLOGY sect. very similar to that of the eyes. The function of the lateral sense organs is unknown. The leech is moncecious. There are nine pairs of testes (Fig. 119, ts), in the form of small spherical sacs situated in segments 12-20. Each gives off from its outer surface a narrow efferent duet, which opens into a common vas deferens (v. d). In the tenth segment the vas deferens increases in width and forms a complex coil, the vesicula seminalis „.^-,^v-,-,-,--^.. J \ imwi5^:,m)>p»mm»!^-;iW!v»vw«w"i-'.,«.-,..iniv m»w'i ,.«. 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 Parker, T. Jeffery (Thomas Jeffery), 1850-1897; Haswell, William A. (William Aitcheson), 1854-1925. New York, The Macmillan Company; London, Macmillan & Co. ,Ltd.
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