The normal number of caeca in the Glyphysodontidae is three.
Among the purely aquatic families such structures are very rare, and are represented by two caeca in the genus Limnodriloides.
1721, from Latin intestinum caecum "blind gut," from neuter of caecus "blind, hidden," from Proto-Italic *kaiko-, from PIE *kehi-ko- "one-eyed," cognate with Old Irish ca'ech "one-eyed," coeg "empty," Welsh coeg-dall, Old Cornish cuic "one-eyed;" Gothic haihs "one-eyed, blind." So called for being prolonged into a cul-de-sac.
caecum cae·cum (sē'kəm)
Variant of cecum.
cecum ce·cum or cae·cum (sē'kəm)
n. pl. ce·ca (-kə)
The large blind pouch forming the beginning of the large intestine. Also called blind gut.
A saclike cavity with only one opening.