1!H)1.| ItfATOMY OF GRUIFOHM T!TT?nS. 



Conclusions. 



The most salient generalization that may be drawn from the 

 series of facts described in this paper is that, if one of the Grui- 

 formes shows the eutaxic or apocentric arrangement of the wing, 

 if is more likely also to show apocentric conditions of the other 

 structures examined. Of the apocentric modifications discussed 

 (and [ discussed each that came within the range ot my investi- 

 gations), there is none found in a diastataxic bird that does not 

 occur also in eutaxic forms. The archecentric or primitive condi- 

 tions similarly are more nbundant in the birds which show the 

 archecentric or diastataxic condition of the wings. Apart from 

 this general correlation of apocentricities, however, there is not 

 the same close and definite incidence of modifications among the 

 Qruiformes that then' is to be found in the Alcedinidae and 

 Oolumbidfe. I hope in later communications to extend these 

 observations to a number of forms allied with the G-ruiformes, and 

 for the present t wish to reserve more detailed conclusions and 

 especially the interpretation of the series of facts in terms of 

 taxonomy. 



References. 



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 1894. 



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Svstematik der Vogel. 1888. 



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\ nl. \ iii. pari 7. z^i 



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4M* 



