. Annals of tropical medicine and parasitology. Parasites. 364 Nervous system. A small single nerve strand was to be seen lateral to the ventral water vessel on each side. On the pore side the nerve was ventral to the cirrus pouch and vagina. Excretory system. This consists of a single ventral vessel on each side ; on the pore side it lies ventral to the cirrus pouch (fig. 4).. Im Imvg.' Fig. 4. Davainea cetitropi^ Transverse section showing cirrus pouch, vas deferens, vagina, ovary and muscular system, —cirrus pouch; —longitudinal muscle; o.—ovary; t.—testes ; v.—vagina ; —v
. Annals of tropical medicine and parasitology. Parasites. 364 Nervous system. A small single nerve strand was to be seen lateral to the ventral water vessel on each side. On the pore side the nerve was ventral to the cirrus pouch and vagina. Excretory system. This consists of a single ventral vessel on each side ; on the pore side it lies ventral to the cirrus pouch (fig. 4).. Im Imvg.' Fig. 4. Davainea cetitropi^ Transverse section showing cirrus pouch, vas deferens, vagina, ovary and muscular system, —cirrus pouch; —longitudinal muscle; o.—ovary; t.—testes ; v.—vagina ; —vas deferens; —vitelline gland ; '.—water vessel. X 130. Genitalia. Testes. The testes are about forty in number ; they lie dorsal and anterior on each side of the ovary and extend beyond the ventral excretory vessel. They are somewhat oval in shape and, when fully developed, measure about 85/* by 55/*. Vas deferens. The vas deferens is remarkable in being very long. It extends half-way across the segment and is thrown into a large number of loops which occupy almost the entire field between the internal extremity of the cirrus pouch and the poral wing of the ovary. No seminal vesicle was observed. The cirrus pouch varies in length, extending from about half to three-quarters the distance between the lateral margin and the ventral excretory vessel (fig. 4). Ovary. The ovary is a relatively large bi-lobed organ lying ventral. 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 Liverpool School of Tropical Medicine. Liverpool University Press [etc. ]
Size: 1683px × 1484px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectparasites, bookyear19
