OX THE OUTER REEF. 65 



gorgonia a foot in diameter, and of a rich yellow 

 hue. Clinging to it were a number of beautiful 

 oblong shells of about the same tint tending 

 toward pink. 



" Those are fan-shells," said their guide, " and 

 are parasites on the gorgonia, or sea-fan. They 

 make beautiful sleeve-buttons." 



The boys supplied themselves with a stock 

 of these natural cuff -buttons ; and then Harry, 



Spider-Grub. 



turning over a rock that was alive with spider- 

 crabs, pulled a beautiful blue one out of the 



