520 D i e s i n g. 



Familia \n. Oaleocephalidea. Dies. Character 

 generis unici simul familiae. 



XIX. GALEOCEPHALA STDIPSON. 



Fasciolae spec. Malier. — Planariae spec. Gmelin. — Dendrocoeli spec. Girard. 



Corpus oblongum. Caput corpore continuum subbiauriculatiim, 

 tentaculis genuinis duobus. Ocelll duo. Os ventrale retro medium 

 corporis situm, oesophago.... Äpertura genitalis unica retro os. 

 Aquariim dulcium incolae. 



1. Galeocephala superba STIMPSON. 



Corpus roseum vel lacteum. Longit. . . . 



Dendrocoelum superbuni Girard: in Proceed. Bost. Soc. Nat. Hist. III. 



(i850), 265. — Nordam. Monatsb. IL 2. 

 Galeocephala superba Stimpson: Prodr. I. 5. 



Habitaculum. In rivulis, piscinis et paludibus; in America 

 septentrionali frequens (Girard). 



2. Galeocephala? tentacnlata STIMPSON. 



Planaria tentaculata Gmelin. — Die sing : Syst, Helm. I. 204. 

 Galeocephala? tentaculata Stimpson: Prodr. I. 5. 



Habitaculum. In paludibus Daniae (Müller). 



Familia VIII* Ppocerodea« Dies. Character generis 

 unici simul familiae. 



XX. PROCERODES GIRARD. 



Planariae spec. Aiictor. 



Corpus sublineare v. depressum. Caput a corpore subdiscretum 

 antice truncatum, exauriculatum, tentaculis genuinis duobus frontali- 

 bus. Ocelli duo. Os. . . oesophago. . . Äpertura genitalis. . . Mari- 

 colae. 



Tractus cibarii rami indivisi. — Num genus hoc tentaculis revera genuinis vel 

 solummodo pseudotentaculis instructum sit nee ne, e characteribus a el. 

 Stimpson enumeratis non satis patet. 



1. Procepodes Wheatlandii GIRARD. 



Corpus lineare breve, brunnescens. Longit. ad 2"'. 



Procerodes Wheatlandii Girard: in Proceed. Bost. Soc. nat. hist. III. (1830), 

 251. — Nordam. Monatsb. IF.4. — Stimpson: in Smithson.Contrib. VI. 27. 

 — Idem: Prodr. I. 6. 



