Revision der Turbellarien. i I .) 



-;- oc-iii duo. 



X. TURBELLA MEMPRICH et EHRENBERG. Char. amplificato. 



Planaria Fabricius. — Derostoina DugeS partim. — Mesostomi spec. Duges. 

 Maerostoma Oersted. Strongylostoma Oersted. — Orthostomum 0. Schmidt 

 nee Hcinpr. et Ehrerib. — Sebizoslomum Schmidt. — Mesopharynjjis spec. 

 Schmarda. — Cbonostomum Schmarda. — Catesthia Leidy. 



Corpus teretiusculum v. depressum. Caput corpore coiitiinuim. 

 Os ventrale superum, rirnaeforme, longitudiuale vel transversum, vel 

 subellipticum, v. in medio fere corporis situm circulare, v. posticum 

 subterminale, oesophago cylindrico, amphoraeformi vel infundibuli- 

 formi, protractili v.haud ppotraetfli. Ocelli duo antici. Otolithus nullus. 

 Androgyna. Anas nullus. Aquarum dnlcium, rarius maris incolae. 



Conspectus dispositionis spedernm. 



* Os superum, rirnaeforme, subellipticum v. circulare sp. 1 — 25. 

 * * Os in medio vel paulum supra vel retro corporis medium situm sp 

 26—46. 

 *** Os subterminale posticum sp. 47. 

 Speeies inquirendae: 48 — 57. 



* Os superum, rirnaeforme, subellipticum v. circulare. 



Turbella Hempr. et Eltvcnb. — Derostoina Duges partim. — Maerostoma 



Oersted. — Strongylostomi et Vorticis spec. Sehmarda. 



1. Turbella platyura EEMPRICH et EHRENBERG. - Dies. Syst. 

 Helm. I. 223. 



Hab itaculum. Monspessulani (I) uges). — ßerolini (Eh ren- 

 berg). 



2. Turbella appcndlculata D1ESING: Syst. Helm. 1. 224 adde. 



Macrostomum Hystrix Oerst. Schnitze: Beitr. Turbell. I. 56, 7.3 et 77. 



Tab. V. 3 (animal.). Tab. I. 15 (anatom.). 

 Habitaculo adde: Prope littus in proi'unditate aliquot pedum 

 in mare baltico ah initio aestatis usque ad autumnum organis geni- 

 talibus evolutis (Schnitze). 



Sed. cl. Schnitze cum specie subsequente identica. 



3. Turbella Hystrix DJE&ING,: Syst. Helm. I. 224 adde. 



Macrostomum Hystrix Oer.sted. — Sc/udlze: Beitr. Turbcllar. I. c. - 

 0. Schmidt: in Sitzungsb. d. kais. Akad. XXV. (1857) 87 et in 

 Denkschr. d. kais. Akad. XV. 36. 

 Habitaculo adde: Prope Cracoviam (Schmidt). 



