Figure l. — Etropus microstomus eggs; mean diameter = 0.64 mm: a) middle stage; b-dl development of pigmentation during late 



stage. 



Table i. 



-Egg, yolk, and oil globule diameters (millimeters) for Etropus microstomus eggs taken m Block Island 



Sound. 1975. 



'Discrepancies in sample sizes resulted from shattered oil globules and yolks which were not measured 



1954; Smith and Fahay 1970; Berrien 1975) and is 

 generally believed to result from shattering dur- 

 ing collection or preservation. About 75% of the 

 early stage eggs in our preserved samples also 



contained broken yolks which could not be accu- 

 rately measured. To facilitate descriptions, eggs 

 were separated into three stages following 

 Ahlstrom and Ball (1954): early (.fertilization to 



709 



