The spermatozoa have received a great share of attention, on the part not only of anatomists and physiologists, but even of systematic workers (40).
The spermatozoa of Discoglossus are remarkable for their great size, measuring three millimetres in length.
In the typical newts (Molge) of Europe, the males are adorned during the breeding season with bright colours and crests or other ornamental dermal appendages, and, resorting to the water, they engage in a lengthy courtship accompanied by lively evolutions around the females, near which they deposit their spermatozoa in bundles on a gelatinous mass, the spermatophore, probably secreted by the cloacal gland.
This arrangement facilitates the internal fecundation of the female without copulation, the female absorbs the spermatozoa by squeezing them out of the spermatophore between the cloacal lips.
The spermatozoa thus reach the eggs in the oviducts, where they may develop entirely, some of the salamanders being viviparous.