190 EEPOET ON THE NUDIBRANCHIATE 



Family — MELIBEID^, Alder and Hancoch. 



14. DoTO, OJcen. 



22. D. coRONATA, Gmelin. 



This species is common on Plumularia. Early in April a small 

 specimen was dredged one mile south of the Mewstone, and another 

 small one from the same locality on May 27th. In the latter the 

 last branchia was very slender and simple in structare^ not tubercu- 

 lated ; forwards from it there was a regular gradation to those with 

 extensile tubercles. Of. Herdman and Club^ 14^ p. 232. 



In the collection of preserved specimens there is no undoubted 

 example of D. pinnatifida. Mr. Heape has left a record of having 

 found a variety of D. coronata, " or new species/' in considerable 

 numbers on Sertularians trawled in thirty-five fathoms^ five miles 

 south of the Eddystone. 



23. D. FEAGiLis, Forbes. 



Commonly found here on Antennularia ramosa, sometimes on 

 other Hydroids, e. g. Ralecium. The habit, so noticeable in this 

 group of Molluscs, of individuals of a species going about in couples, 

 is very prevalent in the genus Doto. The two species mentioned above 

 are usually obtained in pairs near the '' roots " of Hydroid-stocks. 



Family— VnOCT01:iOTlBM, Gray. 

 15. Antiopa, Alder and Hancoch. 



24. A. CRisTATA, Delia Chiage. 



One specimen of this species was dredged west of the Mewstone 

 on June 7th of this year. It was one and a quarter inches in length. 

 In colour it was very pale, the usual yellowish colour being confined 

 to the laminae of the dorsal tentacles and the median crest between 

 them. There were opaque white markings along the back in the 

 form of a pair of discontinuous lines, one on each side, from the 

 front of the head to the tentacles and from the tentacles to just 

 behind the heart, where they joined to form a single median dis- 

 continuous line running to the tip of the tail. 



Family— ^OJjimBM, Gray. 

 16. EoLis (= EoLiDiAin the restricted sense of Gray). 



25. E, PAPiLLOSA, Linneus. 



This well-known species is by no means common here now, though 



