846 Proceedings of the Royal Irish Academy. 



Lomanotus marmoratus, A. & H. 



Eumenis {Lomanotus) marmoratus, A. & H. 



Lomanotus flavidus, A. & H. 



L. varians {pro parte), Garstang (1889, loc. cit.). 



L. genei {pro parte) Garstang, Journ. Mar. Biol. Assoc, n. s., 



vol. L, 1890, p. 426. 

 L. genei, Gamble, Ann. Mag. Nat. Hist., ser. 6, vol. ix., 1892, 



p. 379, pi. xvii. 

 L. genei, Gamble, Irish Naturalist, vol. v., 1896. 

 L. genei, Herdman {fide, Beaumont), Trans. Biol. Soc, Liverpool, 



1896, vol. X., p. 42; and Annual Report, Brit. Assoc, 1896, 



p. 446. 



Small specimens of Lomanotus (under 12 mm. in length) 

 "were found on several occasions IWingonAntennularia dredged 

 in Valencia Harbour. They were identified by Mr. Gamble as 

 belonging to the same species which he had studied at Plymouth, 

 and described as L. genei {loc. cit.). 



In dealing with the last species I have already expressed my 

 conviction that the small marbled brown L. marmoratus should 

 be regarded as a well-marked and constant variety, if, indeed, 

 it be not specifically distinct from L. portlandicus. Alder and 

 Hancock's L. flavidus was, in ray opinion, probably a young 

 L. marmoratus rather than L. portlandicus ; very similar young 

 individuals have been described by Garstang {loc. cit. 1890, 

 p. 427), and observed by myself also. A comparison of speci- 

 mens of different size shows that the marbled brown pig- 

 mentation begins to appear in individuals of about 6 mm., and 

 gradually becomes more and more marked during growth; and 

 the papillse become leaf-like. 



Distribution. — S.W. of England (Alder; Garstang; Gamble; 

 W. I. B.) ; Isle of Man (W. I. B.). 



Family— DOTONID^. 

 Genus — Doto. 

 Doto coronata (Gmelin). 

 Doto coronata, A. & H. 



We found this the most abundant Nudibranch on the dredg- 

 ing grounds in Valencia Harbour in the spring of 1895, occur- 



