PLYMOUTH MAKINE INVERTEBKATE FAUNA. 257 



[ Brachyura — contcL] 



PoRTUNUS HOLSATUS, Fabricius : T. Bell, Hist. Brit. Stiilk-eyed Crust., 

 p. 109, fig. 



Queen's Gd. : Cawsaiid B. ; Whitsand B. (e.w.l.h.). 

 Breeding : Mar. (w.g.). 

 PoRTUNUS MARMOREUS, Leach : r. Bell, Hist. Brit. Stalk-eyed Crust., 

 p. 105, tig. 



Breeding : May (w.g.). 



PORTUNUS RUBER (Linnicus) : T. Bell, Hist. Brit. Stalk-eyed Crust., 

 p. 90, fig. 



Common among stones on all rocky shores, between tide-niarks- 

 5 fms. (s.P.). 



Females in berry : Feb.-May ; July (r.a.t.). Zoa^as hatching 

 out : Mar.-May (R.A.T.). 

 PORTUNUS PUSILLUS, Leach : T. Bell, Hist. Brit. Stalk-eyed Crust., 



p. 112, fig. 



Not uncommon in dredgings from the Sound and outside grounds, 

 15-30 fms.; Queen's Gd., occasionally; Drake's 1., occasionally 

 between tide-marks; Yealm B., not uncommon (r.a.t.): Eddystone 

 Gds., on gravel, and occasionally on sand grounds adjoining the 

 gravel (e.j.a.). 



Females in berry : Feb.-May (R.A.T.). Hatching out : Mar. ; 

 June (r.a.t.). 

 Bathynectes longipes (Kisso) : T. Bell, Hist. Brit. Stalk-eyed Crust., 

 p. 361, fig. (as Portunus). 



Near the Eddystone, on fine sand (w.g.). 

 Carcinus m^nas (Pennant): T. Bell, Hist. Brit. Stalk-eyed Crust., 

 p. 76, fig. 



Common everywhere, tide-niarks-3 fms. (r.a.t., s.p.): Millbay 

 Ch., occasionally (r.a.t.). 



Females in berry: Jan.-Apr. (w.G., R.A.T.): May -Aug. (w.g.): 

 Nov. (r.a.t.) : Dec. (w.G., r.a.t.). Zotea stage : Feb.-Apr. (r.g.) : 

 July (r.a.t.). 

 PoRTUMNUS biguttatus (Risso) : C. Heller, Crust, siidl. Europa, p. 94 

 (as ridtyonicltus nasutus). 



Drake's I., occasional specs, burrowing in fine gravel (w.G., R.A.T.). 



Females in 1)erry : Aug. (r.a.t.). Megalops stnge : Aug. (r.g.). 

 POLYBIUS Henslowi, Leacli : T. Bell, Hist. Brit. Stalk-eyed Crust., 



p. 116, fig. , , . ,. J 



The ^ is not uncommon at tnnes on the shrnnp-trawlmg grounds, 



particularly in Cawsand Jl, also swimming near the surface at the 



deeper water stations, but the $ has only twice been recorded at 



the Laboratory (s.p.). 



Females in berry : Sept. (r.a.t., w.i.b.). Hatched : Sept. (r.a.t.). 



Corystidae. 

 Atelecyglus septemdentatus (Montagu): T. Bell, Hist. Brit. Stalk- 

 eyed Crust., p. 153, fig. (as A. hetcroclon). 



Moderately common 15-30 fms. (r.a.t.): local but conmum 

 where it occurs, generally on muddy gravel (s.P.) : Kame-Eddy- 



