CLASSIFICATION OF RHABDOCOELIDA 



49 



Classification of Rkabdocoelida. 



Family. 



PKOPOKIDAE . 



APHANOSTOMATIDAE 



MACROSTOMATIDAE 



MlCKOSTOMATIDAE 



PKOEHYNCHIDAE . 

 MESOSTOMATIDAE . 



PllOBOSCIDAE 



VOL. II 



ACOELA. 



Genus and British species. 

 Froporus venenosus O. Sch. Plymouth. 

 Monoporus rubrupunctatus O. Sch. Plymoutli. 

 Haplodiscus. 



Aphanostoma divcrsicolor Oe. Common. 



A. clcyans Jen. Plymouth. 



Convoluta salicns Grii'. Plymouth, Millport. 



C. paradoxa, Oe. (Fig. 19, B). Common. C. flavi- 



bacillum Jen. Plymouth, Port Erin, Millport. 

 Amphicoerus. 

 Polychoerus. 



RHABDOCOELA. 



Mecynostoina. 



Macrostoma hystrix Oe. Stagnant water. 



Omalostoiiia. 



Microstoma linco,re Oe. Fresh water. 



M. groclandicum Lev. Plymouth, amo'ng Ulva. 

 Stenostoma (Catenula) Icmnae Dug. Near Cork. 



S. leucops 0. Sch. Common in fresh water. 

 Alaurina claparcdii Grtf. Skye. 



Prorhynchus stagnalis M. Sch. In Devonshire rivers. 

 Proinesostoma viariiwratum M. Sch. Common. 



P. ovoideum 0. Sch., P. agile Lev. Plymouth. P. 



solca 0. Sch. Plymouth, Port Erin. P. lenticu- 



latum 0. Sch. Port Erin. 



Byrsophlebs graffii Jen. Plymouth, Millport. 



B. intermedia Grff. Millport, Port Erin. 

 Proxcnetcs flabellifcr Jen. Millport, Plymouth, Port 



Erin. 



P. cochlcar Grff. Millport. 

 Otomcsostoma. 

 Mcsostonui productum Leuck., M. linyua 0. Sch., M. 



ehrcnbcryii 0. Sch., M. tctragonum 0. F. M. (Fig. 



19, A). All at Cambridge. 

 Jf.rorfroteMEhr. Widely distributed. M.viridatum 



M. Sch. Manchester. M. robcrtsonii Grff., J/. 



flamdum Grff. Both at Millport. 

 Bothromcsostoitui pcrsonatum 0. Sch. Preston. 

 Castrada. 



Pscudorliynclms b-ifidus M'Int. Millport, St. Andrews, 



Port Erin. 



Acrorhyiichus caledonicus Clap. Generally distributed. 

 Macro rhynchus nacyclii Kbll., M. croccus Fabr. Ply- 

 mouth, Millport. 



M. hcl(jolaiulicus Metsch. West coast. 

 Gyrator hcrmnphroditus Ehrbg. St. Andrews. Also 



common in fresh water. 



Hyporhytickus annntus Jen. Plymouth, Port Erin. 

 H. penicillatus 0. Sch. Plymouth. 



E 



