J 



MAEINE ALGiE OF THE ^ SEAL AEK ' EXPEDITION. 123 



6- Laueencia ceyla:nica5 X Ag. 



J. Agardh, Epicrisis Syst. 1876^ p. 660. 



De Toni, Syll. Alg. vol. iv, sect. iii. 1903, p. 805, 



Amirante, at 20 fms. ; dried specimen and in alcoliol 

 Coetivv, reef: in alcohol. 

 Distribution. Ceylon. 



Subfam. Chondeie^. 



AcANTHOPHOEA, Lamouroux. 



1. ACA^'THOPHOEA OEIENTALIS, J. Ag. 



J. Agardh, Species Algarum, ii. 1863, p. 820. 



De Toni, Syll. Alg. vol. iv. sect. in. 1C03, p. 822. 



Boro-esen " Some new or little-tnown West Indian Floridese, ii.," in Bot. Tidsskr. Bd. xxx. 



1910, p. 201. 



Terne Malie ; dry specimen. 



Seychelles, Long Island ; dry specimen. 



Distribution. Zanzibar ; Malay Archipelago ; North Australia ; Tonga Archipelago ; 



Marianne Islands. 



Both specimens are full grown and large, but both are barren, and thus a study of 

 the stichidia is out of the question. In a recent paper Mr. Borgesen has called atten- 

 tion to the fact that the name of A. Tliierii ought to be changed to A. spicifera and that 

 the antheridia of A. orientalis are very much like those of A. spicifera. 



PSEUDENDOSIPHOXIA, n. g 



Thallus radicibus parvis substrato affixus et yerisimilitcr horizontaliter expansus, 

 constat ex axi principali, ramis lateralibus incremento infmito et ramis dorsalibus 

 yentralibusQue incremento finito. Ad apiccm yegetationis axis principalis radiat 



findit 



Pedicellus 



principalis postea etiam inferius bilateralis. Axes lateralcs codcm 

 modo quo axis principalis nascuntur. Thallus formatus e cellula centrali et quatuor 

 cellulis pericentralibus pluribus stratis cellularum corticalium pcriphcriam versus 

 diminutarum cinctis. Cystocarpia et antheridia ignota. Stichidia ^napice 

 pedicelli monosiphonii, sporam unam in singulis segmentis contmentia. 

 monosiphonius ramificatus; stichidia nuda. 



1. PsEUDEKDOSiPHONiA Gaedineei, u. sp. (Plate 13. figs. 13-15 ; Plate 14. fig. 30.) 

 Stichidiis sparsis extra axillaribus ; ceteroque confer diagnosin generis. 



Amirante. 20-25 fms.; in alcohol. 



Gardineri recalls, by its short thorny branches and its stichidia 



JPseudendosipIi 



borne on a monosiphonous stalk, the genus EndosipJionia. It has, however, a difi-erent 



