CAPE SAN ANTONIO 203 



into a beak have a curious way of leaping from the 

 water and skipping along the surface with sur- 

 prising rapidity while beating the water with their 

 tails, the body appearing to tremble violently. 

 The "flight" is fully fifty feet. As these have not 

 the expanded pectoral fins of the flying-fish which 

 serve as "wings" for sailing through the air, it is 

 not altogether clear just how the Tylosurus ac- 

 complishes its long skipping flight, for it cannot be 

 possible that the initial momentum acquired could 

 sustain its weight so long above water. If there 

 are small waves running they appear to bound 

 from one crest to the next thus seemingly aided 

 in prolonging their "flight." 



The field party, aided by Torre's Boy Scouts, 

 made a successful raid upon the woods at a point 

 about a mile farther along the tracks, securing 

 the Urocoptids and land operculates we desired, 

 but the chief operations of the day were directed 

 against the residents of the tide pools. The nim- 

 bleness and powers of concealment possessed by 

 many of these dwellers of the pool failed to save 

 them from the copper sulphate method of attack. 

 The process is very effective, for it not only makes 

 easy of capture all that can be seen, but it brings 



