Art. XVJII. Alga of Tasmania. By W. H. Harvey, M.D., &c. 
(Concluded from page 159 .) 
{From the London Journal of Botany , September, 1844 .) 
SERIES II. MELANOSPERMEiE or FUCOIDEiE. 
Tribe 8. Sporochnoidea:, Grev. 
45. Sporochnus radiciformis, Ag. (Fucus radiciformis, Turn, 
t. 189.) 
George Town, V. D. L., R. Gunn, Esq., 1284, 1293. 
Tribe 9. Dictyotea:, Grev. 
46. Stilophora australis, Harv.; fronde cartilaginea, filifornii, 
alterne bi-tripinnatira ramosa; ramis primariis elongatis, indi- 
visis ; secundariis tertiariisque laxe insertis, simplicissimis, 
strictis, acutis, basi attenuatis; verucis ellipticis, sparsis. 
George Town, V. D. L., R. Gunn, Esq., n. 1318.—A single 
imperfect specimen marked with a query is all that I have seen 
(n. 1318 is Pol. cancellata), but this is sufficient to establish a 
perfectly distinct new species. This specimen, which consists of 
the upper portion of a frond, is 6 inches long, and half a line 
in diameter, solid, cartilaginous, with a percurrent stem, much 
branched alternately; the branches and their divisions not strictly 
distichous, though nearly so. Branches long, simple, patent, 
alternate or secund, laxly set with alternate elongated simple 
ramuli, which bear a third and probably occasionally a fourth 
series similar to themselves. All the ramuli more or less tapering 
at base, and very acute, or acuminate at the apices. Warts of 
fructification rather laxly scattered over the branches and ramuli, 
depressed, exactly elliptical. Colour olive green. 
SERIES III. CHLOROSPERMEiE or ZOOSPERMEjE. 
Tribe 10. Ulvacea:, Ag. 
47. Ulva latissima, L. 
George Town, V. D. L., R. Gunn, Esq., n. 1275. 
48. Enteromorpha conipressa, Grev. 
George Town, V. D. L., R. Gunn, Esq., n. 1289. 
