Echinodermata of St. Andrews. 69 



Order II. Ophiuroidea. 



Fam, 2. Ophinridae. 



Genus 4. Ophiothrix, Miiller & Troschel. 



Ophiothrix fragilis, 0, F. Miiller ; Rev. A. M. Norman, 

 Ann. & Mag. Nat. Hist. Febmarj 1865, p. 107. 



Abundant under stones in rock-pools and near low-water 

 mark, and dredged in the water beyond to a considerable depth. 

 Many of the stones in the pools are covered with the ova of 

 this species about the middle of November ; and some of the 

 starfishes have them attached to the disk. 



Genus 5. Amphiura, Forbes. 

 Amphiura filiformis^ O. F. Miiller; Norman, op. cit. p. 107. 

 Occasionally in the stomachs of haddocks. Rare. 



Amphiura Chiajii^ Forbes; Norman, oi^. cit. p. 107. 

 Vast numbers are thrown ashore on the West Sands after 

 storms. It is also common in the stomachs of the cod and 

 haddock. 



AmpMuradegans^ Leach; Norman, op. cit. p. 109. 

 Frequent under stones in rock-pools and near low water, 

 especially towards the Rock and Spindle. 



Genus 7. Ophiocoma^ Agassiz. 



OpMocoma nigra, O. F. Miiller ; Norman, op. cit. p. 111. 



Not uncommon from deep water (by dredging and the deep- 

 sea lines of the fishermen). It does not occur in profusion, as 

 in many parts of the Zetlandic and southern portions of our 

 seas. 



Genus 8. Ophiopholis, Miiller & Troschel. 

 OpMopliolis acideata, O. F. Miiller; Norman, op), cit. p. 112. 

 Rather plentiful in deep water, and common in the stomach 

 of the cod ; occasionally under stones near low water at the 

 East Rocks. 



Genus 9. Ophiura, Lamarck. 

 Ophiura lacertosa, Pennant; Norman, op. cit. p. 112. 



