258 F. W. GAMBLE, B.SO. 



e. Tentacles rudimentary. Oral and male genital apertures 



united behind brain. A median gut-branch absent over 



the pharyngeal region - - Genus Stylostomum. 



Species: — S. var labile (intestinal branches brightly coloured). 



V. Literature referred to, arranged according to the Dates of 



Publication. 



(1) 1768. Strom, H. — " Beskrivelse over Norske Insecter ; Andet Stykke," 



' Det kongelige Norske Videnskabers Selskabs Skrifter,' Deel iv. 



(2) 1773. Mulber, 0. F. — ' Vermium terrestriura et fluviatilium, seu animalium 



infusoriorum, helminthicorum, et testaceorum non marinorum, succincta 

 historia,' vol. i. 



(3) 1776. Muller, O. F. — 'Zoologiae Danicse prodrouius, seu Animalium 



Danise et Norvegiae indigenarum charac teres, &c.,' Havniee, 8vo. 



(4) 1777—1806. Muller, O. F.— 'Zoologica Danica,' folio. 



(5) 1780. Fabricius, O. — 'Fauna grcBnlandica,' 8vo., pp. 326-7. 



(6) 1814. Dalyell, J. G. — ' Observations on some Interesting Phsenomena in 



Animal Physiology exhibited by several Species of Planarise,' Edin- 

 burgh, 8vo. 



(7) 1815. Montagu G. — " Description of several new or rare Animals, 



principally marine, discovered on the South Coast of Devonshire," 

 ' Trans. Linn. Soc.,' vol. xi, pp. 25-6, pi. v, fig. 3. 



(8) 1823. Fleming, J. — "Gleanings of Natural History, gathered on the 



Coast of Scotland during a Voyage in 1821," ' Edin. Phil. Journal,' 

 vol. viii, p. 297. 



(9) 1826. Fabricius, O. — " Fortsaettelse af Nye Zoologiske Bidrag : vi. Nogle 



lidet bekjendte og tildeels nye Flad-Orme (Planarise)," ' Kong. Dansk. 

 Vid, Selskab. naturvid Afhandlingar,' Deel ii, Kjobenhavn, 4to. 



(10) 1831. Ehrenberg, C. G.— " Symbolee physicse : " ' Phytozoa Turbellaria.' 



(11) 1832. Johnston G. — "Illustrations in British Zoology : 3, Planaria 



cornuta," ' Magazine of Natural History,' vol. v, pp. 344-346, fig. 79. 



(12) 1836. Johnston G. — "Illustrations in British Zoology: 52, Planaria 



subauriculata," ibid., vol. ix, pp. 16, 17, fig. 2. 



(13) 1839. Foebes, E., and Goodsir, J. — " Notice of Zoological Kesearches in 



Orkney and Shetland during June, 1839," Eeport British Assoc, 9th 

 meeting. 



(14) 1840. Geube E. — • Actinien, Echinodermen, und Wurmer d. adriatischen 



u. Mittelmeeres,' Konigsberg, 4to , pp. 51-6. 



