88 MARINE FAUNA OF ST. ANDREWS. 



Polycera Lessoni, D'Orbigny ; A. & H. B. Nud. M. fam. 1, 



pi. 24. 



On a lamiuarian blade after an October storm ; one spe- 

 cimen. 



Genus 6. Ancula, Lov^n. 



Anmla cristata, Alder; A. & H. B. Nud. M. fam. 1, 

 pi. 25. 



Not rare under stones in rock-pools, chiefly at the East 



Kocks. 



Genus 8. Goniodoeis, Forbes. 



Goniodoris nodosa, Mont. ; A. & H. B. Nud. M. fam. 1, 

 pi. 18. 



Abundant between tide-marks under stones in rock-pools 

 and elsewhere, throughout the year. 



Fam. 2. Dorididae. 



Genus Doris, L. 

 Doris tuberculata, Cuvier ; A. &H. B. Nud. M. fam. 1, pi. 3. 

 Abundant under rocky ledges and under stones in pools. 

 Its parasite, Ergasilus, is common. 



Doris Johnstoni, Alder & Hancock ; A. & H. B. Nud. M. 

 fam. 1, pi. 5. 



[Plate n. fig. 16.] 



Occasionally under stones in pools between tide-marks 

 at the East Rocks. The same Ergasilus occurs on this 

 species. 



Doris repanda, Alder & Hancock ; A. & H. B. Nud. M. 

 fam. \, pi. 6. 



Abundant at all seasons amongst the rocks between tide- 

 marks. A specimen in the act of spawning is represented 



