88 
MARINE FAUNA OF ST. ANDREWS. 
Polycera Lessoni, D’Orbigny; A. & H. B. Nud. M. fam. 1, 
pi. 24. 
On a laminarian blade after an October storm ; one spe¬ 
cimen. 
Genus 6. Ancula, Loven. 
Ancula cristata , Alder; A. & H. B. Nud. M. fam. 1, 
pi. 25. 
Not rare under stones in rock-pools, chiefly at the East 
Rocks. 
Genus 8. Goniodoris, 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. Dorididse. 
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 II. %. 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. 1, pi. 6. 
Abundant at all seasons amongst the rocks between tide- 
marks. A specimen in the act of spawning is represented 
