CAPE SAN ANTONIO 165 



exceedingly lively crustaceans scamper about the 

 rough surface taking refuge, when pursued, within 

 the crevices or under projections, and, if persist- 

 ently followed, leaping into the water. Of this 

 particular crustacean, as of the majority of the 

 commoner forms of Antillean animals, little or 

 nothing is known of either habit or life history. 

 What a fascinating thing to do if one but had the 

 time to learn the stories each of these myriads of 

 creatures could tell. The systematist will be for 

 ever rearranging his classifications and seeking new 

 species, and there can be no end to it ; but a richer 

 field is open to the naturalist who will become 

 personally acquainted with his living beasts and 

 will study them sympathetically and patiently. 

 The eternal ' * Why ? ' ' that we all seek may never be 

 found, but the nearest answer we can ever hope for 

 must be sought from these little people of the forest 

 or the sea. Among the mollusks of the station are the 

 Littorinas, L. zigzag and L. lineata, showing various 

 color patterns through an extensive range of local 

 varietal forms; occasional colonies of L. anguli- 

 fera are to be seen and most abundant of all are 

 the two Tectarius, T. nodulosa and T. muricata. 

 These marine mollusks are in a fair way of becom- 



