July 24, 1930 
Put three hermits in dry jars (2 Paguristes gray!, 1 Petrochirus 
balanensis). Had been in running water aquarium over night; were good and 
active this a.m. (from #29-30). 9*00 a.m. water drained from shells. 
12:30, could only see Petrochirus in shell, 2 Paguristes 'way back. Large 
Grapsus in water was holding hinder part of carapace out; other one half 
out of water on side of cage. Dessication experiments don't prove anything; 
man without water can live to days, Grapsus less than 12-24 hrs., 
which is perhaps an equally great span in life of crabs, and does not tend to 
show any greater or less degree of approach to attaining dry land habitat. 
Ocypode, in the years we have been recording its habits and behavior since 
the days of Aristotle, is no nearer independence of the sea than when it first 
became Ocypode. 
#30 - 1930. 
Went down with hood off reef west side of Loggerhead about half way 
between Lab Dock and lighthouse dock in 12-15 feet of water, among coral heads 
that arose from scoured sandy flat of broken coral east of eel grass patches 
to within nearly (about) six feet of surface. Brought up few rock fragments 
and one Porites clump, broke up in bucket, few things saved. 
So far have first showed barnacles in Millepora. Found Crusea in lumpy 
coral and in 4garacia and Porites. On dredged shell got Verruca and 
Balanus from mangrove root. 
#31 - 1930. 
of 
On rocks below (S^) lighthouse dock, east side Loggerhead Key, low tide 
3:49 p.m. With tonsil retractor got several B(al)gusia depressa and one 
Percnon gibbesi. Mithrax verrucosus put in dry aquarium jar at 5*50 p.m., 
Plagusia depressa ditto at 5*40 p.m. All finds this day except Pachygrapsus, 
Microphrys, and large crabs, from under thin sheet of encrusting coral, which 
