PLYMOUTH .MARINE INVEllTEBKATE FAUNA. 211 



[ Echinodev ma,— contd. : Turbellaria ] 



Spatangidae. 

 Spatangus purpureus, 0. F. Miiller: F. J. Bell, Catal. Brit. Echiiiod. 

 Brit. Mus., p. 165. 



Moderately common in coarse sand and gravel, 15-35 fms. (s.p.): 

 Eddystone Gds. (E.J.A., s.p.): Stoke Pt. Gds.; liame-Eddystone Gds. 

 (r.a.t., s.p.) : Looe-Eddystone Gds. (s.P.) : Mewstone Ledge (r.a.t.) : 

 Queen's Gd. (s.P.i). 



The Mollusc Mo)dnciita suhdriata is very commonly attached to 

 the oral spines of this species (r.a.t., s.p.). 



ECHINOCARDIUM CORDATUM (Pennant): B. Forbes, Hist. Brit. Starf., 

 p. 190, tig. (as Amp] lid ot us): anterior ambulacrum in a deep groove. 



Not uncommon buried in sand between tide-marks in the Yealm 

 Estuary; and in Kuni B., on the Zostcra beds; occasionally dredged 

 in Cawsand B., and outside in 15-35 fms. on fine sand (r.a.t.) : 

 Rame-Eddystone Gds. (r.a.t., s.p.): Eddystone Gds. (e.j.a., s.p.): 

 Looe-Eddystone Gds. ; common 6 m. S. of Breakwater (s.P.). 



The Mollusc Tdliniya ferruginosa is found associated with this 

 species (r.a.t.). 



Echinocardium penxatifidum,* Norman: F. J. Bell, Catal. Brit. Echinod. 

 Brit. Mus., p. 170, fig. : anterior ambulacrum not in a groove, 

 postero-lateral ambulacrum with generally 14 and 12 pores. 



Not uncommon 15-30 fms.; Eame-Eddystone Gds.; Stoke Pt. 

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



EcHlNOCARDiUxM FLAVESCENS (0. F. Muller) : F. J. Bell, Catal. Brit. 

 Echinod. Bdt. Mus., p. 171, fig.: anterior ambulacrum not in a 

 groove, postero-lateral ambulacrum with generally 7 and 6 pores, 

 spines thick-set and silky. 



Looe-Eddystone Gds., rare, associated with F. i^ennatijidum, but 

 its habitat is probably on finer ground than that of the latter 

 species (s.P.). 



TURBELLARIA. 



(Nomenclature that of F. W. Gamble, British Marine Turbellaria. 

 Quart. Journ. Micr. Sci., xxxiv, 1893.) 



Proporidse. 



Proporus venenosus (0. Schmidt). 



Not uncommon at low water Wembury B. and Drake's L (f.w.g.). 

 MoNOPORUS RUBROPUNCTATUS (0. Schmidt). 



Not uncommon at low water, Wembury B. and Drake's L (f.w.g.). 



Aphanostomidse. 

 Aphanostoma diversicolor. Oersted. 



Various localities between tide-marks (f.w.g.). 

 Aphanostoma elegans, Jensen. 



One specimen amongst Ulvct at Redding Pt. (f.w.g.). 



CONVOLUTA saliens, V. Grail. 



Among Zoslera from Cawsand B., rare (f.w.g.). 



* The specimen recorded, Journ. Mar. liiol. Assoc, ser. 2, vol. v, p. 530, as E. peimatiftdiwi, 

 was really E. Jlavescens (e..i.a.). 



