. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. MALE ORGANS OF BATRACHIANS. 377 385 In most Newts the testis is divided into two lobes, fig. 387, u, one, usually the larger, in advance of the other: I have observed three detached lobes or testes on each side. In the Salamander there may be one or two smaller lobes or accessory testes, besides the two chief divisions of the gland.' In tailless Batrachians the testes, in accordance with the shajDe of the body, jDresent a full oval form, compact and undivided : they are situated, as shown in the Frog, fig. 385,_/,/, on t
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. MALE ORGANS OF BATRACHIANS. 377 385 In most Newts the testis is divided into two lobes, fig. 387, u, one, usually the larger, in advance of the other: I have observed three detached lobes or testes on each side. In the Salamander there may be one or two smaller lobes or accessory testes, besides the two chief divisions of the gland.' In tailless Batrachians the testes, in accordance with the shajDe of the body, jDresent a full oval form, compact and undivided : they are situated, as shown in the Frog, fig. 385,_/,/, on the ventral side of the anterior half of the kidneys, g, g, having an entire investment of peritoneum, often deei:ily or brightly coloured by pigmental cells, which forms a broad and short mesorchium, suspending them to the renal glands and supporting the blood- vessels and efferent ducts. Processes of peritoneum, filled with fat, ib. I, I, diverge from the fore part of both bodies. In all Batrachians the testis consists of seminiferous caaca, more elongated than the sperm-follicles of Fishes, shorter and straighter than in higher Reptiles, having their blind ends next the capsule. This consists of a fibrous or ' al- bugineous ' tunic, beneath the serous one: both have been re- moved to show the tubuli testis in Swammerdam's accurate figure, fig. 386. The semen is conveyed hj short transverse efferent ducts, h, to a common longitudinal canal, i. In the Menopome about ten vasa elFerentia quit the elong- ated testes and enter the common canal, which extends along the an- terior three-fourths of the kidney, and at its fore-end is connected with the ligamentous remnant of the duct of the Wolffian body : it is thence reflected back along the outer border of the kidney, receiv- ino; in its course toward the cloaca the ureters, which are short transverse or oblique tubes, from ten to twenty in number: the urino-seminal canal, supported by a narrow fold of peritoneum, forms a few slight
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