PHOXICHILIDIUM COCCINEUM. 135 
of one form with another, and prove that forms now regarded by 
zoologists as fully matured, and therefore described as so many 
distinct species, are but the varied phases assumed by some one 
animal during the singular stages of its development. Hence 
the value of the study of development—that great law of life, 
everywhere seen and everywhere at work, silent but sure, teeming 
with beauty, and elevating all who rightly ponder and study the 
manifold mercies and wisdom of the great Creator who has made 
so many and such varied forms of life—varied in form, varied in 
habit, and varied in usefulness, but all showing a marvellous 
beauty of design, and adaptation of form, and habits, to the 
several circumstances of their lives. In conclusion I have to 
express my thanks to my esteemed friend the Rev. A. M. 
Norman for the valuable advice and assistance he has so kindly 
afforded me during my investigations, and in the preparation of 
this paper. 
EXPLANATION OF PLATES VI. AND VIL. 
Fig. 1. Early appearance of larva of Phoxichilidiwm coccinewm, removed 
from ovum attached to female. 
Fig. 2 & 3. Further stages, showing the early appearances of foot-jaws 
and rudimentary legs. 
Fig. 4. Well-developed larval stage, with foot.jaws, rudimentary legs, 
and their filamentous appendages. 
Fig. 5. The same, more highly magnified, and showing more distinctly 
the several parts. 
Fig. 6. Branch of Coryne eximia, with sacs of various forms, and in 
several of the positions they occupy upon the polypary. 
Fig. 7. Branch of C. eximia, with a sac at the extremity of the stem, and 
a young polype in course of formation at the extremity of an- 
other stem. 
Fig. 8. Branch of C. eximia, with a sac at the extremity of a stem, which 
_ by its position appears to have withdrawn the nutriment from 
an adjoining part, staying the growth of a shoot, which is seen 
as a short rounded lobe. 
Fig. 9. Branch of C. eximia , with a sac at the extremity of a stem. 
Fig. 10. Early form of parasitical young at that period of its existence 
after ‘it had moulted for the first time and rid itself of the 
rudimentary legs and their appendages, being now entirely 
destitute of legs. 
