A capsule or pocket inclosing a number of spermatozoa. They are present in many annelids, brachiopods, mollusks, and crustaceans. In cephalopods the structure of the capsule is very complex.
the caudate version of sperm. When salamanders mate, there's a complicated courtship display, and it ends with the male depositing a spermatophore on the ground; the female picks it up with her cloaca. The eggs are fertilized inside the female, and then she lays the eggs.
a structure deposited on substrates by courting male salamanders that typically consists of a mass of semial fluid (sperm cap) resting upon a gelatinous base