82 General Notes. 
the vertebrate of the neurally situated mouth of the arthropod 
mollusk, then the objections urged by Cuvier against the 
of his great rival are answered, and the dorsal (hæmal) a 
a caterpillar or crustacean must be considered to om, 3 
the ventral (hæmal) aspect of a vertebrate. Hæmal ant r 
must then be used in preference to dorsal and ventral, WoO 
latter depend only upon the position of the mouth, neural in tie 
Invertebrata, and separating the brain- ganglia to become a 
hæmal in the Vertebrata by the abortion of the portion ai 
neurad, and the connection of the alimentary canal wit 
vagination of the ectoblast. i | 
The arguments in favor of the homology of the dorsa 
the optic lobes and the hind brain, rather than between them 
the cerebrum ?—W, N, L. 
Forses’ Srupies or THE Foop or Animars—Some of 
food of the smaller fresh-water fishes, and the fourth er 
_ first food of the common whitefish. The first brings °° 
o 
The so-called pirate perch (Aphredoderus), proved be 
1 Illinois State Laboratory of Natural History. Bulletin No. 6. Studies 
Food of Birds, Insects and Fishes. By S, A. Forbes. 
