MADE AT THE PLYMOUTH LABORATORY. 277 
attributed to Myliobatis is too vague and defective to be regarded 
as important evidence. Members of the allied family Trygonidee 
have been recently shown not only to be viviparous, but to nourish 
their young in the uterus by means of long glandular papille of the 
wall of the uterus, which pass through the spiracles into the 
stomach of the foetus. 
In my specimen of Myliobatis the abdominal pores were distinct 
and open behind the aperture of the cloaca, 
