Observations on the reproductive system, egg-case, embryos and breeding habits of Chiloscyllium griseum Mull. and Henle.

Abstract

The complete life-history of Chiloscyllium griseum from Madras is described in detail. A description of the reproductive system and the egg-case is given. There is a single ovary and a common oviducal opening. The nidamental glands are well developed. An account of the different stages of development is given. The breeding period commences probably in January and extends over several months. Eggs are probably liberated in pairs, the two eggs of every pair escaping in quick succession. The time taken for development of the egg into a full-grown embryo before it is liberated is very short being 2 1/2 to 3 months unlike the very much longer periods taken in colder regions by allied forms.