3i8 Records of the Indian Museum. [Voi.. X, 



The last leaves the body in the mid-ventral line immediately 

 posterior to the gills. 



Colour — In spirit the dorsal surface is brown and the mider 

 surface whitish. The edge of the disk all round is darker than the 

 back. The blue ocelli are absent. The ocular portion of the 

 disk is dark brown crossed by two light bands connecting the 

 anterior and posterior edges of the orbit respectively. 



Note on the breeding of Chiloscyllium grisemn. Miill. and 

 Henle, — Chiloscyllium griseum, Miill. and Henle. {= C. indicuni 

 (Gmel.) of the *' Fauna") is one of the commonest dog-fishes 

 on the Madras coast. In January, 1913, one of the tanks in 

 the Marine Aquarium at Madras contained eight adult specimens 

 captured at different times. As the period of ''gestation" is 



Egg-capsule of C/n'Ioscy/liii in griseiiiii, X i. 



probably very long in dog-fish, there is little doubt that the tisli 

 in question must have been impregnated before entering the 

 aquarium. Every night from January 27th to 30tli a pair of egg- 

 capsules were laid, and a single one on the night of February 

 ist. It could not be ascertained whether all the eggs were laid 

 by a single individual or not 



Description of egg. — The horny capsule is of the usual quad- 

 rangular shape. The shorter or terminal sides of the quadrangle 

 are contracted and irregularly folded so as to bring the angles 

 towards the middle line. The contraction is greater at one end 

 than at the other, consequently the angles actually meet in the 

 former case, while they do not do so in the latter. The four 

 angles are not prolonged into the usual filaments for attach- 

 ment, their function being relegated to extremely numerous and 

 slender silky threads which fringe the edges of the capsule. ]n 



