LORQUINIA 
At one o'clock wide stretches of rocks were uncovered, so old 
shoes were put on and collecting was begun. The shore between the 
land end of the Breakwater and Point Firmin is very rough, con- 
sisting largely of ledges of soft rock and loose rocks of all sizes. On 
account of a thin layer of mud which covers all the rocks except those 
near the high tide, the collecting here is not as good as in former 
years. Some of the rocks are covered with moss and sea-weed, and 
some kelp grows on the rocks at the outer edge of the tide-flats. 
We found the little brown limpit, Acmaea incessa Gld., living on the 
long stems of the kelp, on which it feeds and, in some cases, eats 
holes through the stem. The ledges of soft rock already mentioned 
are an ideal place for the boring species of bivalves, several of which 
were dug out with a hammer and cold-chisel brought along for this 
purpose. It is quite a task to dig the large Parapliolm calif ornicus 
Conr. out of the rock, two of the four specimens which I dug out 
having been broken in the process. The exact manner by which 
these species bore their holes in the rock is not definitely known. 
One specimen of the pretty Cypraea spadicea Gray was taken. 
Years ago this species was quite common at this point, but continued 
collecting has nearly exterminated it. The smallest shells found were 
a few Ceacuin orcuttii Dall, which wxre on the under side of a rock 
picked up' in a tide pool. This pretty brown tube is only about 4 mm. 
long and 4^ mm., in diameter. 
One valve of the rare Antigona fordi Yates, was picked up in a 
tide pool. This is the second valve that I have found in four years' 
collecting, less than a dozen specimens that have been taken in good 
condition being known to me. Beach worn valves are frequently 
found near the light-house at Point Loma by San Diego collectors. 
The large Ischiwchifon conspianis Cpr. were taken freely, some 
of the specimens being 4 inches long, and very fine, the interior col- 
oring ranging from orange to pale blue. Several other species of 
Chitons were taken, including six Lcpidopleurus nigafus Cpr. 
Crabs were very plentiful and of many species. Two large rock 
crabs, probably of the genus Cancer, were taken as was also one fine 
large kelp crab which is not uncommonly caught in fishermen's lob- 
ster traps in deeper water. Many Tegula shells, in which hern.iit 
crabs were living, contained specimens of the little white slipper shell. 
CrepiduJa crepidula Lam. 
