KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 25. N:0 5. 47 



this variety and the type is that the former has narrowly elliptic and not reniform 

 seraicells, this also alters the form of the sinus. Wille, 1. c. gives long. and lat. 12, 

 crass 7 /u-, his plant however has oval, not reniform, semicells, and the mode of junc- 

 ture is not apparent. I consider that as the plant conjoins in filament by the apical sur- 

 faee, and not by 'rods' or cushions', it is a Spondylosium. 

 9. S.J geminatum, Wallich (Sphcerozosma geminatum, Wallich Mscr. No. 68, 1855). 



Semicells long. 7 — 20, lat. 13 — 18 ,u. 



T. XXI, f. 4, 5, after G. C. W. 1. c. 



This plant seems to be a verv aberrant member of the genus, and Wallich has 

 given no description with the icons! Fig. 4x500 shews the cell-division; f. 5x1000, 

 the two views of a filament; c semicell dividing? 



Another form (apparently) of this stränge plant is shewn a t f. 3, taken from 

 Walliciis Mscr. No. 48; dimensions: 



Fronds, long. 9.7 — 29.2, lat. (5.5 — 13 /*; G. C. W. No description given. 



Lower Bengal. 



The only distinction between the various Spondylosia appears to be the presence or 

 or absence of an elongation or protrusion at the conjoined apices, as in S. lamelliferum, 

 which in its projecting leaflets' is unique. 



Gen. 14. Cosmocladium, Bréb. 



(Liste p. 133, 185G; Rabh. Fl. Eur. Alg. sub PahnellacecE! p. 53, 1868). 

 No plant referable to this genus has been noted; cfr remark under Dirtyosphcerium. 



Gen. 15. Cosmarium, (Corda) Ralfs, emend. 



(Corda, Obs. in Alm de Carlsbad, 1835, ex. p.; Ralfs Br. Desm. p. 91, excl. Dysphinctii sp.). 

 'Frondes non lobatae, nec apicaliter ineisne; sine aculeis et radiis», Ralfs 1. c. 



1. C. serratum, n. sj>. G. minus, reniforme, fere tam longum quam latum; semicellula? 

 basi infläta 1 , apice rotundatre, sinn lineari, extrorsum ampliato; membrana laevi margine 

 excepta; margine serrata vel minute dentata (dentibus acutis circ. 20 in unam seriem 

 semicell. ordinatis. A latere visum ovato-lanceolatum; a vertice ovale. 



Long. 14, lat. 13, lat. isth. 4, crass. (i u. 

 T. VII, f. 18. 



2. C. coloratum, n. sp. G. parvum, circ. 1 1 / 2 -plo longius quam latins; truncato-ovatum; 

 sinn profnndo lineari; semicellulis truncato-pyramidalibus, angulis basalibus rotundatis, 

 apicibus rotunde truneatis; membrana apud margines sparse granulata (granulis con- 

 centrice ordinatis), colore pallide fusco-luteola. A vertice visum ovale. 



Long. 37, lat. 25, lat, isth. 9 «. T. VIII, f. 14. 



Nearest to C. ps. -pyramidatum, Lund. (Des. Suec. p. 41, t. II, f. 18), from which 

 it differs in form, besides being distinctly granulate at the edges, the centre of frond 

 and semicells being smooth, and also in colour of membrane. 



3. C. Tiirpinii, Bréb. (Liste p. 127, t, I, f. 11; Lundell Desm. Suec. p. 29). 



Long. 68, lat. 62, lat. isth. 17 //. 



