THE NAUTILUS. 101 



Aeolis stellata Stimps. is a Coryphella only very doubtfully dis- 

 tinct from the same author's mananensis, which in turn is either a 

 synonym or a variety of Johnston's rufibranchialis — see a recent 

 article by me in the Nautilus, 



Eolis {Cavolina) salmonacea Couth, (now universally but perhaps 

 erroneously treated as a Coryphella) although omitted from this list, 

 has been reported by Verrill from Eastport. But what Verrill 

 understood that species to be no one can say except that it certainly 

 was not the same as what European authors understand. But then, 

 what European authors understand is just as certainly not what 

 Couthouy meant! The fact is the true salmonacea is entirely enig- 

 matical. However it should appear in the list, 



Dendronotus arborescens Miiller should be D. frondosus (Ascanius) 

 — this change has been universally adopted. 



Cadllna repanda (A. & H.) should be G. obvelata ( Miiller )_same 

 remark as last. 



Issa lacera should be credited to (Abildgaard) instead of (Miiller). 



Doris bifida Verrill (entered twice in the list, once as a variety 

 of Acanihodoris pilosa and once as a variety of A. stellata), Doris 

 stellata Gmelin and Acanihodoris citrina Verrill, are all synonyms 

 of Acanthodoris pilosa (Abildgaard); while D. ornata Verrill is at 

 most a variety. 



It is extremely doubtful whether Lamellidoris diaphana (A. & 

 H.) really occurs on our coast. The common Maine form I believe 

 to be L. aspera, mentioned below. However it correctly appears in 

 this check list. 



Probably nothing can be done with Lamellidoris tenella and L. 

 grisea but to retain them as Mr. Lermond has done, though they are 

 practically nomina nuda. 



Ancula sulphurea Stimps. is a variety of A. cristata (Alder). 



With regard to Idaliella pallida (Ag.) Gould, several errors ap- 

 pear to have crept in. No Idaliella occurs in Maine so far as I am 

 aware. The only eastern American members of the sub-genus 

 known, I think, are pulchella A. & H., found at Salem, Mass., in 

 1879, by Emerton, and modesta Verrill from Vineyard Sound and 

 vicinity. There is, however, a Lamellidoris pallida of Ag. the dis- 

 tribution of which is such as Mr. Lermond's list gives, and of which 

 Proctaporia fusca Stimps. is a synonym as given. The citation in 

 synonymy of Amoeroecium pallidum Verrill 1873, is, of course, in- 



