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GENERAL BIOLOGY 



Table of serial homology. 

 ISOPOD AMPHIPOD DECAPOD 



*When more than 10, indicate by the sign for infinity; when in doubt as to 

 number or as to homologies use an interrogation point. Leave space blank only 

 when an appendage is absent. 



Bracket together the segments that are consolidated upon the dorsal side. 



When different in the two sexes divide the space with a diagonal line and write 

 characters of male and of female in separately. 



the base of a hind leg of a living specimen until it dis- 

 solves a little, and watching for the colored water to appear 

 at the front of the animal when expelled from the gill cham- 



