Das System der Polycladen. ßj" 



Anhang zum System der Polycladen. 



Während des Druckes der vorliegenden Monographie bin ich mit zwei neuen PubU- 

 cationen"^) über Polycladen bekannt geworden, in welchen vier angeblich neue Arten ohne 

 Abbildungen mangelhaft beschrieben werden. Die Speciesbeschreibungen mögen hier der 

 Vollständigkeit halber abgedruckt werden. 



Thysanozoon huttoni Kirk. 



»Body oblong, very tliiii, margin extremely irregulär and puckered. Upper surface uniform dirty 

 yellow, irregularly blotclied witli brown, and liaving a broad, chocolate-coloured border. Under surface steel 

 gi-ay, bordered witli black ; a broad, somewhat irregulär patch of brown extends along tlie central two-tbirds 

 of tbe median liue. Head witb two long tentacles of cboeolate colour, but tipped witb yellow. Lengtb, 

 2 inches.« Fundort: »Lyall Bay.« 



Dürfte wohl kaum mehr als eine Varietät von Thysanozoon Brocchii sein. 



Thysanozoon aucklandica Cheeseman. 



»Body thin, depressed, margin ample, witli numerous irregulär folds and puckers. Upper surface 

 wholly covered with large mobile clavate papillae. Colour varying from dark asliy-brown to light gi'ey, 

 marbled er sliaded with paler streaks, sometimes reddisli-brown ; under surface an opaque greyisli- white, 

 the gastrovascular canals showing through of a chalky-white colour. Head indistinct. Tentacles two, 

 formed by mere folds of the anterior margin of the bodv. Eye-specks about 75, forming a cresceutic 

 patch in an open space between the tentacles, or sometimes broken up into two separate patches. The 

 colour of the papillae is usuallj' a dark grey or browTi with two or three opaque white specks. Length, 

 1 — 3 inches, breadth, ''2 — 1 inch. Common under stones near low-water mark in Auckland Harbour.« 



Nach der Beschreibung ist kein Merkmal vorhanden . welches diese Form von Thysa- 

 nozoon Brocchü specifisch unterscheiden würde. 



Eurylepta herberti Kirk. 



»Body moderate, veined dendritically , margin much crenated and puckered. Upper surface pale 

 Cream colour. with a darker brown median stripe running the whole length; margin white, with an inner 

 border of bright red, and another and narrower one of deep brown. Under surface pale grey, ■«dtli darker 

 along the median line. Tentacles short, pale cream colour, tipped with red. Eyes numerous at the base 

 of the tentacles. Length l'/.^ inch. Evans Bay.« 



Gehört vielleicht zur Gattung Prostheceraeus. 



*] Kirk, T. W. On some new Marine Planarians. in: Transact. and Procoed. of the New Zealand Institute. 

 Vol. XIV. ISSl. pag. 267—268. 



Cheeseman, T. F. On two new Planarians from Auckland Harbour. Ibid. Vol. XV. 18S2. pao;. 213 — 214. 



Zool. St.itioii •/.. Neapel, Fanna um! Flora, Uollvon Noap<-l. XI. Polyiladen. TS 



