o'donoghue : nudibranchiate mojllusca. 14:3 



chunge of definition ; indeed, if Doridopsis be used, Boriopsis 

 disappears as a genus. Secondly, Doriopsis has been adopted 

 subsequently by a number of workers, e.g. Bergh (3-8), Farran (15), 

 MacFarland (17 and 18), V'ayssiere (21), and others. On the whole, 

 then, it seems advisable to retain the term Doriopsis, originally used 

 by Pease, with its definition ainended, and employ it in the sense 

 used by Eergh in 1880 (6). 



The latter author in this paper added to the family a new and 

 closely allied genus JJoriopsilla, which has since been accepted. In 

 this connexion it is to be noticed that if the second of Abraham's 

 objections has weight, then this genus should be termed 

 '■' Doridopsilla ", a proceeding that no one has suggested. 



The following species from the Pacific Coast of North America 

 have been referred to the family. 



In 1803 Cooper (12, p. 58) described a form under the name of 

 ? Doris alhop)U)ictata, and later in 1905 (10, p. 41) Cockerell and 

 Eliot describe a Doridopsis reticulata, but at the same time point 

 out that it is probably identical with Cooper's form. If this be the 

 case, as seems not improbable, then the name of the animal should 

 have been given as Doriopsis alhopunctata. However, a re- 

 examination of specimens convinced Eliot later (13, p. 660) that it 

 really belongs to the genus Doriopsilla, so that the name stands as 

 Doriopsilla albo-punctata, with Cockerell and Eliot's name D. 

 reticulata as a synonym. 



These two authors (10, p. 46) also describe a Doridopsis vidua (?), 

 which they point out is probably identical with the D. vidua of Bergh, 

 1878, but if it should prove distinct they propose for it the name 

 D. nigromaculata. In a list provided by Cockerell in 1908 (9, p. 106), 

 this author gives D. nigromaculata (? = vidua, Bergh), but obviously 

 if it is = vidua, Bergh, then it is Doriopsis vidua, and D. 

 nigromaculata is only a synonym. 



Lastly, we have MacFarland in 1905 (17, p. 245) and 1906 (18, 

 p. 130) describing a Doriopsis fulva. 



Cooper in 1862 (11, p. 204) described a species as Doris 

 {Actinocyclus) sandiegensis, and this Abraham (1, p. 246) suggests 

 should probably be regarded as Doridopsis sandiegensis. This, 

 however, was afterwards shown by Bergh, 1880 (7a, p. 41), to be 

 Diaulula sandiegensis, an identification about which there seems to 

 be no doubt. The members of this family are, therefore : — 

 Family DOKIOPSIDtE. 



Genus Doriopsis, Pease, 1860. 



Species : Doriopsis fulva, MacFarland, 1905. 



Doriopsis vidua, Bergh, 1878 (recorded from California 

 by Cockerell and Eliot, 1905). 

 Synonym : D. nigromaculata, Cockerell and Eliot, 1905. 



If D. nigromaculata should ever be shown to be 

 a separate species, then the two names would 

 stand. 



