iMOLLDSCA OF PLYMOUTH. 443 



the rhiuopliores are frequently thrown back on the dorsum between 

 the lateral halves of the first cluster of cerata. 



35. ■^Facelina punctata. Aid. and Hanc. {= Flahellina punctata, 



1st Rep., p. 192). 



This species has not again been taken. 



Siih-family 7. — Antiopin^. 



25. Antiopa, Aid and Hanc, 1848 { = Janus, Verany, 1844 ; not 



Stephens, 1885). 



36. ■^Antiopa ckistata, Delia Ghiaje. 



Two more specimens have been taken : one, an inch in length, 

 was trawled in the Sound between the Mallard Buoy and the Mer- 

 chants' Anchorage on July 26th by Prof. Johnson, who found it 

 among red branching weeds and Laminaria ; the other, also a large 

 specimen, was discovered by Mr. Minchin in a tide-pool near the bath- 

 ing pond late in August. It was creeping near the surface of the 

 water over the Gladopliorse and other weeds of the pool, the delicate 

 blue tips of its cerata being very conspicuous. 



It is said by M. Giard^ to be, at Wimereux, like Thecacera 

 pennigera, particularly an autumn species feeding upon Bugula. 

 Curiously enough, my friend Mr. Yallentin dredged an individual of 

 each of these species at the same haul in Falmouth Harbour in the 

 spring of this year, along with numerous oyster-valves covered with 

 Bugula flahellata. 



Section G.—EOLO HEPATIC A, Bergh. 



Suh'Section — Anthobeanchiata,^ Goldfuss, 1820 ( = PyGOBKANCHiA, 



Gray, 1821). 



Family— J)OniJ)lJ)M. 



Suh-family — Dofjdid^ cryptobranchiat^, Bergh? 

 26. Archidoris, Bergh. 



37. * Archidoris tuberculata, Guvier. 



As the colours of this species have a general resemblance to those 



» Giard, Bull. Sci. France et Belg., 1888, p. 502. 



' For the classification of the Anthohranchiata, of. Abraham, Proc. Zool. Soc, 1877, 

 pp. 196—269, pis. xxvii— XXX. 



3 Bergh, Oattungen nordischer Boriden, Arch. f. Naturgesch., Jahrg. 45, Bd. i, pp. 

 340—369. 



NEW SERIES. — VOL. I, NO. IV. 33 



