NOTES AND MEMORANDA. 75 



Cuthona ? aurantiaca. — I am glad to be able to add this beautiful 

 species to the Kudihranchiate fauna of Plymouth. Two specimens 

 were found amongst some dredging from the Millbay channel, on 

 February 6th, 1895. On the same stone there was a colony of 

 Antennulana ramosa, which most likely formed the food of the Nudi- 

 hranch. One of the specimens had deposited spawn on the same stone. 

 The interest of this lies in the fact that Alder and Hancock mention 

 this animal as spawning in June and July, whereas this specimen 

 spawned on or about the 6th February. I think there can be no doubt 

 that this spav/n belongs to the Eolid, as it exactly answers Alder and 

 Hancock's description of it, and, moreover, no other Nudihranchs were 

 found in the dredging. During the short time I kept these animals 

 alive, like so many other Eolids, they exhibited a partiality for floating 

 on the surface of the water, foot uppermost. 



J. C. Sdmner, 



