PLYMOUTH MARINE INVERTEBRATE FAUNA. 201 



[ Siphonophora : Stauroniedusae : Discomedusae ] 



SIPHONOPHORA. 

 Monophyidre. 

 MuGGl^A ATLANTICA: J. T. Cunningham, Journ. Mar. Biol. Assoc, ser. 2, 

 vol. ii, p. 212, fig. 



First met with 5 m. S. of the P^ddystone, afterwards in great 

 abuudauce close to the Breakwater, and even inside the Sound, 

 Sept. 1891 (j.T.c): 1892, appeared near end of Aug. (E.J.B.): Sept. 

 1893, fairly abundant early part of month; Sept. 1895, exceedingly 

 abundant (e.t.b.): 1895, middle Aug.-mid. Dec. (t.v.h.): 19U:'., 

 occasionally met with in Feb. (w.G.). 



Agalmidse. 



Agalmopsis Sarsi, Haeckel : E. T. Broume, Proc. Irish Acad., ser. 3, 

 vol. V, p. 678. 



Mar., 1902, single specimen from | m. S.W. of the Mewstone 

 and from West Channel (r.a.t.). 



STAUROMEDUS^. 

 Lucernariidse. 



LucERNARiA campanulata, Lamouroux : B. Haeclrl, Syst. ]\Iedus., 

 Denkschr. med.-naturw. Ges. Jena, vol. i, p. 392. 



Pieny Eks., several small specs, with Halidydu^ ; single specs, 

 from Cawsand B. and Whitsand 15. (w.i.B.). 

 Haliclystus auricula (Fabricius) : W. I. Beaumont, Proc. Irish Acad., 

 ser. 3, vol. v, p. 806. 



Yealni Est., on Zostcra, fairly common (s.P.) : Eeny Pks., on 

 Enteromorpha, in high tide rock-pools (a.j.s.) : Cawsand B., on 

 Zostcra, occasionally (s.P.). 

 Depastrum cyathiforme : 31. Sars, Fauna Litt. Norvegiag, pt. i, p. 26, 

 fig. (as Lucernaria). 



Mount Edgcumbe ; Batten (e.j.a.) : Drake's I. ; Rame Hd. (w.G.). 



DISCOMEDUS^. 



Pelagiidse. 



Chrysaora isosceles (Linnpeus) : E. Haeclrl, Syst. Medus., Denkschr. 

 med.-naturw. Ges. Jena, vol. i, p. 513. 



Occasionally during the summer months (s.P.). 



Planuke liberated in Aug. and reared to Seyphistoma stage (e.t.b.). 



Cyaneidse. 



Cyanea capillata (Linntcus): E. Haeckel, Syst. Medu?., Denkschr. med.- 

 naturw. Ges. Jena, vol. i, p. 529. 

 Plymouth (e.t.b.). 



Cyanea Lamarcki, Peron & Lesueur : E. Haeckel, Syst. Medus., 

 Denkschr. med.-naturw. Ges. Jena, vol. i, p. 530. 

 Occasionally, every summer (a.j.s.). 



