Revision der Turbellarien. ö03 



corporis parte ab apice remoti, pigmento semicirculari ad latus 

 interiium globulorum ovalium. Longit. ultra 2'", latit. ultra 1/2'". 

 Fovia trilobata Stimpson: Prodr. I. 6 et 12. 



Habitaculum.' In siuu Avatscha Kamtschatkae, littoralis, iiiter 

 lapides (Sti m pson). 



Vm. RHYNCHODEMUS LEIDY. 



Planariae spec. Auclor., Geoplanae spec. Schnitze. 



Corpus subcylindn'cum vel depressum. Caput corpore con- 

 tiinuim proboscidiforme reflexile. Tentncula nulla. Ocelli duo. Os 

 ventrale infra medium corporis situin, oesophago doliiformi. Aper- 

 iura genitalis unica retro os. — Terrestres ; zonae temperatae 

 Europas et Americae, tarn borealis quam meridionalis, incoiae. 



1. Rhjnchodenias terrestris LEIDY. 



Fasciola terrestris Maller: Vermes terrestr. et fluviat. hist. I. 2. 68. 



Planaria terrestris Gnielin: Hist. nat. 3092. — Dies.: Syst. Helm. I. 206. 



Planaria terrestris Duges : in Annal. des sc. nat. XXI. 82. Tab. H. 18. — 



Elireiiherg : Acaleph. d. rolhen Meeres 67. — Oersted: in Kroyer's 



Naturhist. Tidssii. IV. Sö2 in nota; ej. Entw. einer syst. Einth. 



der Plattw. 55 in nota. — Schmarda: Neue wirbell. Th. I. 1. XIH. 



Rhynchodemus? terrestris Leidy : in Proceed. Acad. Philad. V. (1851), 



289. — Stimpson: Prodr. I. 7. 

 Geoplana terrestris M. Schnitze: in Hall. Abhandl. IV. (1856), 22 et 32. 



Habitaculo adde: Sub lapidibus prope Grypbiam raro 



(Fred er. Müller). 



2. Rbynchodenias sylvaticns LEIDY. 



Corpus elongatum crassiusculuin antrorsum sublineare, relror- 

 sum dilatatum, postice acutum, supra convexiusculum, griseum striis 

 longitudinalibus duabus fuliginosis et niacula fuliginosa transversal! 

 mediana, subtus planum albidum. Caput brunneum. Ocelli prominuli 

 circulares capiti impositi. Longit. 2— 7'", bit. capitis '/s'", corp. 1/4'". 



Planaria sylvatica Leidy: in Proceed. Acad. Philad. V. 1851, 241. 

 Rhynchodemus sylvaticus Leidy: ibid. 289 et 1858, 171. — Stimpson: 



Prodr. 1. 7. 

 Geoplana sylvatica M. Schnitze: in Hall. Abhandl. IV. (1856), 32. 



Habitaculum, In bortis et sylvis sub lapidibus et lignis putri- 

 dis nee non corticibus, in America septentrionali (Leidy). 



Limacis more incedit, mucum copiosum excernens. — Animalcula nocti- 

 vaga, insectivora. 



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