802 Transactions.— Botany. 
Art. XXXVII.— Notes on Fresh-water Alge. By W. I. Spencer, M.R.C.8. 
[Read before the Hawke's Bay Philosophical Institute, 9th October, 1882.) 
Plates XXVI. and XXVII. 
Is continuation of the Catalogue of the Fresh-water Algs occurring in the 
vieinity of Napier, which I laid before you last year,* I beg this evening to 
call your attention to the following additions which have come to my notice 
since then. 
Draparnaldia sp. ?. Fig 1. 
Filament branched, i11," in diameter, tapering towards apex, cells 
as long as, or twice as long as broad. Branchlets (ramuli) bipinnate zi" 
in diameter, cells slightly longer than broad, terminal ones pointed, tufted, 
near apex filament gives out a large number of elongated jointed processes, 
which are mostly simple, but sometimes branched. I am indebted for this 
plant to Mr. Hamilton, who discovered it in the Horokiwi stream. Possibly 
& variety of D. glomerata. 
Cladophora pacifica, Kuch. 
Montague (Voy. au Póle Sud) mentions this as having been found in 
Lord Auckland's Group. 
Cladophora longiarticulata, Kuch. 
Found by Nordstedt in the Sandwich Islands. 
Staurocarpus. 
Spirogyra, sp. n. Fig 9. 
Cells square, very rarely twice or four times longer than broad, this 
probably only when on the point of dividing, ends slightly convex, never 
retracted. Endochrome arranged in three distinct straight bands at right- 
angles to wall of cell, and with no visible connection. Each band consist- 
ing of three or four minute round cellules, containing chlorophyl!. Sporange 
formed in parent cells, globular. 
Cells.—Diameter, 435; length, 41," rarely 41, or tts: 
Zygospore y1,," in diameter. 
This little plant is easily recognized by the rigidity of the filament, the 
masonic regularity with which the cells are arranged—the convex ends of 
which just touch—and the singular arrangement of the endochrome. 
Common, 
Zygnema, sp.n. Fig. 8. 
Ends of cells retracted. Contents consist of twin stellate masses of 
endochrome.  Zygospore lodged in the filament, oval, filling but not 
bulging the cell. Spore bearing cell appears to be somewhat smaller than 
the others. 
* “Trans, N.Z. Inst.,” vol. xiv., art. xliii. 
