THE AMERICAN NATURALIST [Vol. XL 



in great detail the cireulatory system in the fislu-^ with clieeks, 

 or Loricati. Among other things he sliows tin- ( )|)liio(l()iiti(he 

 and the Zaniolepidte, should be separated, as dis inci faiiiilics, from 

 the Hexagrannnidje. 



In the Mrmolrs of the New York Academif of Srinirr, (vol. 2, 1905), 

 William K. Kellicott gives an elaborate and useful aeeount of the 

 development of the vaseular and respiratory systems of the dipneu- 

 Stan g(Mius, Xe<x'eratodus. He calls this genus by the same name 

 as its extinct ancestor or predecessor, Ceratodus. 



In the Bulletin of the Illinois State Lahoratorij of Natural History, 

 Dr. S. A. Forbes and R. E. Richardson descrilx^ a new Shovel-nosed 

 Sturgeon from Illinois River, under the name of P<tr(israphirfiiiiirlius 

 alhus. This species is found mixed whh the oidinaiy Shovel-nose, 

 Scaphirhyncfnis platorhynchus in the j)rop()ftion of abont one to five 

 hundred." Tiie new gentts has the belly and birasi naked, the ribs 



