to be useful as species markers in certain 

 instances at appropriate dilutions. The recip- 

 rocal relationship of the reaction of Cytisus 

 scoparius bark and lima bean extracts with red 

 and Chinook salmon may be cited as an example. 

 A factor complicating the interpretation of 

 these results is discussed at the end of this 

 section. 



Table 5 shows reactions of Cyprinid species 

 tested. Though titers were not determined, 

 the qualitative aspects of this group are 

 interesting. The only species failing to react 



with the Maackia chinensis bark extract and the 

 only species reacting with the Cytisus scoparius 

 seed extracts are also members of this group, 

 A qualitative difference in the reactions of the 

 Scotch-broom seed and bark extracts is ap- 

 parent from this table. Studies of two inter- 

 species hybrids in this group are included 

 (these fish were supplied by Ben Patten). 

 Regularity in the inheritance of certain reacting 

 sites is suggested. The squawfish-chiselmouth 

 hybrid erythrocytes reacted with Cytisus 

 scoparius seed, C albus bark, and Maackia 

 chinensis bark extracts as did all squawfish. 



