462 
TRANSFORMATIONS OF INSECTS. 
studied especially by Gerbe and Spence Bate. The young of 
the spiny lobster are remarkable on account of their great resem- 
blance to those of another genus, Phyllosoma. M. Gerbe has no 
doubt of the identity of the young forms of these two genera, the 
adults of which are very different; but Spence Bate, after weighing 
the zoea of Palinurus vulgaris (the spiny lobster). 
(After M. Gerbe.) 
the evidence on both sides of the question, determines that the 
zoea are not identical. The great difference between the minia- 
ture and the perfect spiny lobster can be appreciated by com- 
paring the engraving of the zoea with that of the adult form. 
The outside figures belong to species of the genus Pranizci , and 
are small Isopoda, the variations in colour of which are very remark- 
