270 REVIEWS. 
cases, however, quite complete, discovered by the quarrymen of Mont- 
martre. 
The descriptions here given are of the remains of two insects found 
in the Coal Formation of Morris, Illinois, in company with various 
coal-plants and amphipod crustaceans, which latter are related to our 
hetke beach fleas. These insects were described and figured by Prof. 
J. in the ‘American Journal of Science and Arts,” in 1864. 
Each a the two insects is supposed by the author to form the type of 
a new family of the kebti both of which are described and com- 
pared with the other families. For such comparisons the author finds 
the neuration of the wings indispensable as a guide in tracing their 
affinities, and in limiting the different groups of the Neuroptera gene- 
rally, of which the Dragon Fly, gansta and Ephemera are ex- 
amples. These two extinct families afford instances of a ‘‘synthetic 
is the eee which retains the more essential characters of the 
fishes, while mimicking the scaly reptiles. 
The plates contati partial restorations, one of the right upper 
of Hemeristia occidentalis, an insect allied remotely to the Golden- 
eyed, — fly, so common in our on in summer, and the 
other (Miam the gigantic Corydalus, 
found not e flying ep and nates at twilight in summer. 
ON THE PARALLELISM BETWEEN THE DIFFERENT STAGES OF LIFE IN 
Luscous. ORDER TETRABRANCHIATA. By Alpheus Hyatt. From the 
Memoirs of the Boston Society of Natural History. Vol. I. Part 2. 
1867. pp. 16, 4to. 
In this paper, the author makes a comparison between the old age, 
or period of decline, and the adult forms of allied species of animals, 
represented at Pa bg the Nautilus and Argonaut. During ¢x- 
o speak, falls into its ‘‘second ch hildhood,” 
as stated, though in a more scientific way, by the French naturalist 
ee. This idea is, in the present article, still farther extended to 
collective life of this order of the class of Cephalopoda 
«lala a a Stes, U E tae Y Y 
Sasi ania 
the Nautilus, etc, as well as of the earlie st generic 
stages of the life of the individ- 
f 
tira iife gi 
