240 ANIMALS OF THE SEASHORE 



Not as common as the above in New Jersey, 

 although occasionally seen in Mussel shells. Similar 

 range. 



Pinnixia chaetopterana Stimpson 



PLATE XXV. Fig. 7 



Carapace transversely oval; slightly more than 

 twice as wide as long; hairy; length of carapace 5 

 to 6 mm.; width 12 to 14 mm.; lives commensal in 

 tubes of annelid worms (Amphitrite ornata and Chae- 

 topterus permagmentareus) . Male and female about 

 the same size but the carapace is smoother in the 

 female. 



Found from Massachusetts to South America; 

 not uncommon in New Jersey especially in tubes of 

 Amphitrite; occasionally taken free swimming. 



'esarma reticulatum Say (Marsh Crab) 



PLATE XXV. Fig. 11 



Carapace rectangular; usually about 1 inch in 

 width, slightly less in length; color dark olive or 

 black. 



Lives in holes similar to those of the Fiddler 

 Crab (Uca) although of larger size due to the greater 

 size of the crab. Lives near high water mark in mud 

 flats, inlets, etc. Not common in New Jersey al- 

 though it may occasionally be seen associated with 



