206 PLYMOUTH MARINE INVEKTEBKATE FAUNA, 



[ Ctenophora : Echinoderma ] 



CTENOPHORA. 



BOLINA INFUNDIBULUM (Fabricius): E. Vanlwffen, Nordisclies I'laukt., 

 pt. xi, p. 5, fig. 



Abundant in May of particular years (W.G.): Sept., 1900 (a.j.s.). 



Beroe cucumis, Fabricius: E. Vanhoffen, Nordisches Plankt., pt. xi, 

 p. 7, fig. 



Plymouth, few small specs, (e.t.b.). 



Pleurobrachia pileus (Fabricius) : E. Vanhoffen, Nordisches Plankt., 

 pt. xi, p. 3, fig. 



Always abundant towards the end of May (W.G.). Adults not 

 seen after June; minute specs, appeared in Sept. (e.j.b.): Aug. 



(T.V.H.). 



ECHINODERMA. 



Synaptidae. 



Synapta digitata (Montagu): F. J. Bell, Catal. Brit. Echinod. Brit. 

 Mus., p. 34, fig. 



Rame-Eddystone Gds., occasional specs, (r.a.t.). 

 Synapta inh/EP.ens (0. F. Miiller): F. J. Bell, Catal. Brit. Echinod. Brit. 

 Mus., p. 33, fig. 



Drake's I., occasional specs.; Yealm P., not uncommon between 

 tide-marks in coarse, loose sand (r.a.t.). 



Cucumariidse. 



CUCUMARIA BRUNNEA (Thompson) : E. Forbes, Hist. Brit. Starf., p. 229, 

 fig. (as Ocnus). 



Frequently in some numbers on Hydroids, Alga?, etc., from rocky 

 ground and from the trawling grounds; below tide-marks to 25 fms. 

 (s.P.) : often abundant on rocky ground off' the Mewstone (E.J. A.) : 

 Yealm 11., not uncommon (r.a.t.). 



CucUMARiA Hyndmani (Thompson) : This species may be readily recog- 

 nised by the silvery appearance of its test. 



Occasional specs, not inicommon on coarse ground ; Stoke Pt. 

 Gds. ; Pame-Eddystone Gds. ; Looe-Eddystone Gds. (s.P.). 

 Cucumaria Normani*: S. Face, see p. 309. 



Not uncommon on rocky ground in crevices and under stones, 

 L.W.-10 fms. (S.P.). 



Cucumaria SAXicoLA-f , Brady & Robertson : *S'. Pace, see p. 30G. 



Not uncommon on rocky ground, in crevices and under stones, 

 L.W.-IO fms. (s.P.). 

 Thyone fusus (0. F. Miiller): F. J. Bell, Catal. Brit. Echinod. Brit. 

 Mus., p. 42, fig. 



Occasional specs, from Millbay Ch., Cattewater, Cawsand B. ; 

 not uncommon on the Mewstone Gds., and occasionally met with 

 in 15-35 fms. on other grounds (r.a.t.). 



* Previously recorded as 0. I'lanci. 

 t Previously recorded as C. pentodes. 



