508 



f) i e s i n 0-. 



SuhfnmUia IL Eupohjcelidea. Ocelli niimerosi. Oesophaofus 

 cylindricus. Aqiiarum dulcium incolae. 



XIII. POLYCEJJS HEMPRICII et EHRENBERG. 



Fasciola et Planaria Müller. — Hiriido Kirhy. — Goniocarenae spec. Scliinarda. 

 Corpus planum dilatalum ohlonguni, pede veiiti-ali rudlo. Caput 

 corpore coiitiniiuni, nee auriculatiim, nee tenfaculatum. Ocelli nume- 

 rosi marginales. Os ventrale infra medium corporis situm, oesophago 

 cylindrico. Apertura genitalis unica retrorsum sita. Aquarum dulcium 

 Europae temperatae incolae. 



1. Polycells nigra HEMPRICH et EHRENBERG. — Dies. Syst. Helm. 

 I. 191 adde: 



Penis subglobosus antice uncinulorum eoronula muUipIici 0. Schmidt. 

 Planaria nigra Thompson: in Ann. of nat. bist. XVIII. (1846), 388. 

 Polycelis nigra Ehrenberg: Acaleph. d. rotli. Meeres 67. — Stimpson: 



Prodr. I. 6. — 0. Schmidt: in Zeitschr. f. wissensch. Zool. X. 26—33 



(et de organ. genital). Tab. III. 4. IV. 1, 2, 3. 



Haliitaculo adde: In Hihernia (Thompson); in stagnis et 

 rivulis tarde fluetitibus prope Gratiam in Styria (0. Schmidt). 



2. Polycelis brunnea STIMPSON. 



Polycelis nigra var. a. brunnea. — Dicsing : Syst. Helm. I. 192. 

 Polycelis brunnea Stimpson: Prodr. 1. 6. 

 An hnjus generis? 



3. Polycelis viganensis EHRENBERG. 



Acalepli. des rothen Meeres 67. — Stimpson: Prodr. I. 6. 

 Polycelis nigra var. ß. viganensis. — Dicsing: Syst. Helm. I. 192. 

 Goniocarena viganensis Schmarda: Neue wirbell. Tb. I. 1. 14. 

 Planaria viganensis 0. Schmidt: in Sitzungsb. der kais. Akad. XXXII. 

 (1838), 268. 



Habihioulo adde: In Tliuringia (S chultze); in rivulis sub- 



alpinis in Styria (0. Schmidt). 



4. Polycelis coruuta 0. SCHMIDT. 



Corpus supra convexiusculum retrorsum acutatum decolor vel 

 nigrescens. Caput antice rotundatuni, lobis cephalicis tentaculifor- 

 niibus duobus. Ocelli 70 — 80 marginales paralleli et in margine an- 

 teriore seriati. Longit. 6 — 7'". 



Notiliar anatomicac: Penis obovatus infra juncturam vasorum deferentiuni 

 excavatus, in parte sua basilari granula agglomerata conlinens. 

 Polycelis cornuta 0. Schmidt: in Zeitscbr. f. wissenscb. Zool. X. 2S — 33 

 (descr. et de syst, nerv., organis genital, et organo ignotae functio- 

 nis). Tab. HI. 1, 2. HI. 3. 



