KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 25. N:() 5. 21 



13. Cl. jniicidum, Ralfs (Br. Des. p. 172, t, XXIX, f. 6, 1648). 



»Linear-lanceolate . . . very slightly tapering to the sub-acute extremities; lower 

 edge very slightly inflated at middle. Terminal vesicles absent, but moveable granules 

 occupying space between terraination of endochrome and extremities of frond exist. 

 Cells (vesicles) in a single row.» Wallicii Mscr. No. 110. Long. '224, lat. 5.2 /u. 



14. Cl. Wittrockianum, sp. nov. Cl. mediocre, diametro circ. 10-plo longius, vix arcu- 

 atuin, utroque polo leniter attermatum, ventre fere planum, dorso leviter curvatum; 

 apicibus trimcato-rotundatis; membrana striata (striis evidentibus 13), rufescente. 

 Corpuscula amylacea, in qnaque semicellula circ. 8, in serie unica posita. Sutura non 

 observata, (duplex?). Long. 390, lat. 42 u. Cl. striolato proximum. After Wallich 

 Mscr. No. 108. T. I, f. 25x200. 



I have to give outline only of this species, as it was omitted when first sketch- 

 ing the Plate. I have the pleasure of naming this plant after the eminent Swedish 

 Algologist Prof. V. B. Wittkock. 



15. Cl. Wallichii, sp. nov. Cl. mediocre, circ. 9-plo longius quarn latum, leniter arcuatum, 

 ventre non tumidum, utroque polo leviter attermatum, membrana glabra, pallide ru- 

 fescente; apicibus rotundatis; partibus dorsalibus apicum incurvatis. Sutura media na, 

 triplex, tripliciter prosiliens. Demi-frondes sa?pe achroaj; post divisionem? Long. 386, 

 lat. 42 //. Tab. I, f. 13 a (after Wallich, Mscr. No. 331) x 400. 



Of f. 13 b Wallich says, »From internal portion of the apex a minute tube is 

 seen to extend inwards; this tube is as long as broad (l.i ,«). It looks as thou<>h a 

 portion of the cell-membrane had been thrust inwards. No motion observable ex- 

 ternally, but from the inner point of the tube a stream of ciliary matter pours for- 

 wards towards the eentre of frond, dividing almost immediately into two layers. This, 

 probably, is an optical illusion, and most likely the mäss forms a layer which con- 

 tinuously invests the whole frond internally. At the edges, however, cilia are seen, 

 distinctly sweeping to and fro, with a wavy motion .... and carrying the granules 

 round, backAvards and forwards, along with it.» G. C. W. 1. c. 



[I only insert this to show that Ehrexberg's ideas of terminal openings and of 

 cilia in the Closteria found support, in well-informed quarters, in 1855! W. B. T.]. 

 Fig. 13 b. </, internal endochrome; .<?, irregular space, filled with colourless proto- 

 plasm, enclosing moving granules; r, dark brown cytioplasin, »ciliated»! t, terminal 

 tubular opening»! After G. C. W., 1. c. 



16. Cl. neraatodes, Joshua (Burm. Des., Linn. Soc. Journ. p. 652, t. XXII, f. 7 — 9, 1886), 

 (i proboscideum, n. var. (Cl. proboscideum Turner in litt.). Cl. semi-lunatum, lV 2 -plo 

 longius quam latum; f. typicse consimile, sed majus; costatum non striatum. Mem- 

 brana fusco-lutea; apad suturam stria unica transversalis. 



Long. 230—265, lat. max. 26—32 ,«. T. XXII, f. 13. 



Khasia, super flumen Brahmaputra; comm. G. v. Lagerheim from Utricularia sp.; 

 also ex Utr. stellaris from the Himalayas. Specimens from Riksmuseum, Stockholm. 



The type is stated by Mr. Joshua, loc. cit., to have 18 — 20 longitudinal stria? ; 

 this form has 11 — 14 strongly marked costce; when fully known it may prove dif- 

 ferent from Mr. Joshua's species. 



