182 EEPOET ON THE NUDIBRANCHIATE 



Section B. — Polyceein-s; (= Polycekid^, Bergh). 

 7. yEaiRUSj Loven. 



13. ^. PUNCTILUCENS, D'Orhigny. 



Ou March 6tli of this year we obtained one of these remarkable 

 little creatures from near the Duke Buoy. Some of the contents of 

 the dredgOj consisting chiefly of Hydroids and Polyzoa, had been 

 placed in a dish of sea- water, and after some time I found this Nudi- 

 branch to have emerged and made its way to the side of the vessel. 



The epipodial ridges are represented in this species by a row of 

 tubercles on each side, somewhat more definitely marked than the 

 rest. 



The usual habitat of this species appears to be under stones at low- 

 water mark (see Alder and Hancock, 1). Balfour obtained it in 

 shallow water in the Firth of Forth (10), and M'Intosh (17) states it to 

 be " not uncommon under stones in rock-pools between tide-marks " 

 at St. Andrews. 



For some remarks on the colouration see the Introduction {supra). 



8. Teiopa, Johnston. 



14. T. CLAViGER, Mtiller. 



One specimen of this species was obtained on March 29th with the 

 dredge off the Mewstone. The lateral gill-plumes were considerably 

 smaller than the median one. The orange pigment-spots on the back 

 were confined to a median row. 



9. Thecacera, Fleming. 



15. T. pennigera, Montagu. 



One example of this rare species was obtained on August 3rd of 

 this year in twenty fathoms off Rame Head. Giard states it to be 

 not uncommon on the coast near the laboratory at Wimereux, and 

 that it is particularly an autumn species, feeding upon Bryozoans of 

 the genus Bugula. 



10. PoLYCERA, Cuvier. 



16. P. QUADRiLiNEATA, Milller. 



This species is not uncommon. It has been found in Jennycliff 



