Crustacea of St. Andrews. 347 



Fam. Canceridae. 



Genus Cancee, L. 



Cancer jmgu^'us^ L. ; Bell, op. cit. p. 59. 



Abundant all round the rocky border in the larainarian 



region, and frequent between tide-marks. In the stomach of 



this species are many curious parasites, such as Teirarhynchus 



and EcMnorliynchus^ probably derived from its food. Sections 



of the carapace show internally tubular processes, apparently 



connected with the hairs. 



Genus PiRiMELA, Leach. 

 Pirimela denticulata, Mont. ; Bell, op. cit. p. 72. 

 Occasionally from deep water. Rare. 



Fam. Portunidae. 



Portunus depurator^ L. ; Bell, op. cit. p. 101. 

 Dredged occasionally off the West Rocks on a sandy bottom, 

 cast ashore by storms, or found in the stomach of the cod. 



Portunus marmoreus^ Leach ; Bell, op. cit. p. 105. 

 On the West Sands after storms. Rather rare. 



Portunus holsatus, Fab. ; Bell, op. cit. p. 109. 

 Not uncommon in the stomachs of cod and haddock. Saccu- 

 lina occurs on this species occasionally. 



Portunus jmsiUus, Leach ; Bell, op. cit. p. 112. 

 Occasionally from deep water, and rather common in the 

 stomachs of the haddock and flounder. 



Genus PORTUMNUS, Leach. 

 Portumnus variegatus^ Leach ; Bell, op. cit. p. 85. 

 Abundant on the sandy ground off the West Sands. 



Genus Carcinus, Leach. 

 Carcinus mannas, L. ; Bell, op. cit. p. 76. 

 Everywhere abundant between tide-marks and in the 



