216 PLYMOUTH MARINE INVERTEBRATE FAUNA, 



[ "Semertini—cmitd. ] 



Cephalotiirix linearis (Kathke), Oersted. 



liuin L. in sand between tide-marks; dredged outside Breakwater 



(T.H.R.). 



Breeding in March (w.g.). 



Eunemertidse. 

 EuNEMERTES Neesi (Oersted). 



Abundant on Breakw^ater, rare elsewhere (t.ii.r.) : the Bridge, 

 Drake's I., common (r.a.t., w.i.b.) : "Wembury B. (e.j.a., t.y.h.). 

 Breeding : Feb. (r.a.t.) : March to Oct. (t.ii.r.). 



Eunemertes gracilis, Johnston. 



Breakwater, among Laminaria roots (t.h.r.) : Drake's I. (r.a.t., 

 W.I.B.). 



Eunemertes echinoderma (Marion). 



Yealm, one specimen dredged 25.1.99, one from sand-bank 1.2.00 

 (w.lb.): Yeahn at low water (r.c.p.). 



Nemertopsis flavida (Mcintosh) Beaumont (= Tetrastemma Jlavidum, 

 Mclntosli, Riches, Joubin, ncc Biirger). 



Xemertopsis tenuis, Biirger ( = Tetrastemma flavidum, var. longissimum 

 Joubin). 



Beaumont: Fauna and Flora A^alencia Harbour, Proc. Eoy. Irish 

 Acad., 1900, pp. 817 and 818, where reasons are given for relegating 

 2\irastcmma Jlavidum to genus Nemeiiopsis Biirger. 



Biirger, Naples Monograph. 



The doubtful status of Ncmertopsis tenuis as a species distinct 

 from N. flavida, and the fact that they have rarely been dis- 

 tinguished witli certainty make it expedient to consider them 

 together (av.i.b.). 



Very common in Plymouth Sound, between tide-marks and from 

 dredgings, especially Duke Rk. and Millbay Ch. (t.h.r.). 



Breakwater (between tide-marks), Asia Sh., Duke Bk., Millbay 

 Ch., E. Yealm (dredging-ground) ; both forms occur in Pi. Yealm 

 and IMillbay Ch. (w.LB.). 



Amphiporidse. 



Amphiporus pulcher (Johnston): Mcintosh, Mon. Brit. Annel. i. 

 Nemertines, Bay Soc, 1874. Beaumont, Proceed. Eoy. Irish Acad., 

 V, 1900, p. 819. This is not the A. 'pidclier of Burger's Monograph. 

 Taken on one or two occasions on Eddystone Gds. (w.i.B.). 



Amphiporus lactifloreus (Johnston). 



Common between tide-marks, under stones (t.h.r.) : Drake's I. 

 (e.j.a., T.V.H., r.a.t.): Eum B. (w.i.b.): Mt. Edgcumbe (e.j.a.); 

 Wembury B. (t.v.il). 



Breeding in early spring (t.ii.r.), March (av.g.). 



Amphiporus dissimulans, Eiches, Journ. Mar. Biol. Assoc, N.S., iii, p. 10. 

 In considerable abundance, IMillbay Cii. (t.ii.r.). 

 Once between tide-mark.s, Drake's 1.; dredged, Asia Sh., Millbay 

 Ch. (common) ; R. Yealm (w.i.b.). 



Breeding in spring and in Oct. (t.h.r,). 



