IN THE SOUTH-WESTERN DISTRICT. 155 



pilchard. It may also help us to an appreciation of the due value 

 of the perivitelline space as a character in the determination of un- 

 described ova. Cunningham has made known the occurrence in the 

 egg of the pilchard of an exactly converse variation {Journal, N.S., 

 iii., p. 150). 



NEW SERIES. — VOL. V. NO. 2. 



