212 PLYMOUTH MARINE INVERTEBKATE FAUNA. 



[ Turbellaria — conld. ] 

 CONVOLUTA TARADOXA, Ocrstcd. 



Littoral zone, widely distributed, nowhere abundant (f.w.g.). 



CoNVOLUTA FLAVIBACILLUM, Jensen. 



Among sand in creeks at Picklecombe Fort, Wenibury V>. and 

 Bovisand B. (f.w.g.). 



Microstomidse. 



Microstoma grcenlandicum, Lev. 



Among l/lva, Kedding Pt. (f.w.g.). 



Mesostomidae. 



Promesostoma marmoratum (Schulze). 



Not uncommon in tide-pools in Wembury B., Drake's L, and 

 Kedding Pt. (f.w.g.). 

 Promesostoma ovoideum (0. Schmidt). 



Occasionally dredged near Duke lik. (f.w.g.). 



Promesostoma solea (O. Schmidt). 



Abundant in dredging from all localities (F.W^.G.). 



Promesostoma agile (Levinsen). 



Among Zostera in Cawsand B. (f.w.g.). 



Byrsophlebs Gkaffi, Jensen. 



Drake's I., low spring-tide ; amongst algic (f.w\g.). 



Brysophlebs intermedia, v. Graff. 



Drake's L, low spring-tide ; amongst algse (f.w.g.). 



Proxenetes cochlear, v. Graff. 



Plymouth Sound (e.g.G.). 

 Proxenetes flabellifer, Jensen. 



Tide-pools on north side of Cawsand B. (f.w.g.). 



Mesostoma neapolitanum, v. Graff (?). 



One specimen among Fuci on inner side of Breakwater (f.w.g.). 



Proboscidse. 



PSEUDORHYNCHUS BIFIDUS (McTntOsh). 

 Plymouth Sound (e.G.G.). 



AcRORHYNCHUS CALEDONicus (Claparede). 



Tide-pools near Picklecombe and Bedding Pt. ; less commonly 

 in Wenibury B. (f.w.g.). 

 Macrorhynchus Naegeli (Kulliker). 



Plentiful in August on inner side of Breakwater (f.w.g.). 



Macrorhynchus croceus (Fabricius). 



Dredged once on New Gds. (f.w.g.). 

 Macrorhynchus helgolandicus (Metschnikoff). 



Once on New Gds. (f.w.g.). 

 Gyrator hermaphroditus, Ehrbg. 



Tide pools on rocks in front of Laboratory : water sometimes 

 brackish. In early winter, not in spring (e.g.g.). 



Hyporhynchus armatus (Jensen). 



Among Zostera in Cawsand B.; tide-pools Kedding Pt. (f.w.g.). 

 Tanks in Laboratory (e.g.g.). 



