On the Male Genito-Urinary Organs of the Lepidosiren and Protopterus
Article first published online: 7 JUL 2010
1902 The Zoological Society of London
Proceedings of the Zoological Society of London
Volume 71, Issue 2, pages 484–499, April 1902
How to Cite
Kerr, J. G. (1902), On the Male Genito-Urinary Organs of the Lepidosiren and Protopterus. Proceedings of the Zoological Society of London, 71: 484–499. doi: 10.1111/j.1469-7998.1902.tb08184.x
- Issue published online: 7 JUL 2010
- Article first published online: 7 JUL 2010
- Cited By
The more important features in the morphology of the male urogenital system of Lepitlosiren and Protopterus may be summarized as follows:—
- 1The testis is very much elongated and is divisible into an anterior formative and n posterior vesicular and conducting region.
- 2The posterior part of the vesicular region is connected with the tubules of the hind end of the mesonephros, which serve for the passage of the genital products.
- 3In Protopterus the testis is connected with the kidney only at its extreme tip; in Lepidosiren there is a stories of about half a dozen segmentally arranged vasa efferentia which open into Malpighinn capsules.
- 4In Protopterus the hind genital region of the kidneys is clearly marked off from the rest, and in this region the kidneys are fused across the middle line; in Lepidosiren there is only a slight attempt at this differentiation, and the kidneys of the two sides are posteriorly, as elsewhere, quite distinct.
- 5The Wolffian ducts open in the adult inale by a common (Protopterus) or by two separate (Lepidosiren) papillae into the distal portion of the cloacal caecum, which is morphologically a urogenital sinus formed in ontogeny as a dilatntion of the fused, but originally separate, posterior portions of the Wolffian ducts.