what we are pleased to term intelligence? If we 

 adopt the accepted definition of instinct as being 

 a hereditary mode of behavior, then the behavior 

 of Little Lena is something else. For here grew up 

 a custom which surely is not only new to the 

 species, it is also outside the experience of the en- 

 tire race. The truth is that, regardless even of how 

 we construe intelligence, we must give to the 

 spider-crab the credit of possessing this faculty to 

 a very high degree. 



VI 



This concludes the major results of my re- 

 searches in connection with Hyas coarctatus. But 

 before closing this monograph it may be well, for 

 the sake of the casual reader who may have a 

 special interest in this remarkable creature, to sum- 

 marize the most pertinent points. Thus: 



1 . The spider-crab, Hyas coarctatus, inhabits the 

 shores and deeper waters of the Atlantic Coast in 

 the neighborhood of New York City and the New 

 England States. 



2. The young larvae hatch from eggs carried 

 about on the abdominal swimmerets of the mother 

 after an incubation period of about two weeks. 



[269] 



