100 COLLINS AND HERVEY. 



of longitudinal filaments, subdistant, large and small intermixed, the 

 outer usually small, the fascicles of the cortical layer free from each 

 other except as united by the general gelatinous coating. In Goralia 

 the larger filaments of the inner layer are densely packed, the smaller 

 being on the surface only, the fascicles of the cortical layer adherent 

 and confluent. L. pulverulenta is placed in Euliagora, L. valida in 

 Goralia; but in both species as they occur in Bermuda we have found 

 large central filaments branching and producing smaller filaments, 

 with no definite position in the central strand; generally the cortical 

 fascicles are borne on the smaller filaments of the central strand, 

 but not infrequently on the larger ones. The density of the cortical 

 fascicles and their mutual adhesion or freedom seem to depend largely 

 •on age or activity of growth; they often vary much in the same in- 

 dividual. 



3. L. PULVERULENTA Agardh, 1822, p. 396; Borgesen, 1915, p. 80, 

 figs. 87-92; P. B.-A., No. 1928. Miss Peniston; Castle Harbor, 

 Harrington Sound, Cooper's Island, March, Wadsworth; St. David's 

 Island, Feb., May, Tobacco Bay, March, Hervey; Cooper's Island, 

 Shelly Bay, April, Collins. Very soft and gelatinous, collapsing into 

 a shapeless jelly when taken from the water, but not difiicult to ar- 

 range in natural form on paper if dried without pressure or with very 

 slight pressm-e. 



L. pectinata sp. nov. Fronde submolli, ecalcarea, rubro-purpurea, 

 ad 20 cm. alta; ramis primariis inferne nudis vel ramulis paucis 

 brevibus munitis, superne ramos gerentibus frequentes breves, alter- 

 nantes vel secundatos, ramulos similes gerentes; ramis et ramulis 

 omnibus, primariis exceptis, plus minus ve.sinuosis et curvatis, ultimis 

 patentibus, in- vel recurvatis, saepe pectinato-secundatis; apicibus 

 abrupte acutis. Strato axili, circa 150 fi diam., filamentis dense 

 compactis; cellulis circa 20 ;u diam., 4-8 diam. longis; fasciculis 

 filamentorum assimilatorium 600-800 /x longis, densis, aequilongis, 

 superficiem aequalem continuam frondis formantibus; filamentis 

 repetite dichotomis, cellulis inferioribus 5-7 n diam., 5-8 diam. longis, 

 subcyclindricis; superioribus brevioribus, crassioribus, ovoideis; 

 terminalibus 8-10 /i diam., 2-3 diam. longis, interdum pilos breves, 

 circa 4/^ diam., ferentibus. Fructificatione ignota. 



Frond rather soft, without incrustation, dull red-purple, up to 20 cm. 

 high; main branches naked below or with a few short ramuli, above 

 with numerous alternate or secund branches, bearing similar ramuli, 

 all but the main branches more or less sinuous and curved, the lesser 

 divisions patent, in- or recurved, often pectinately secund; all tapering 



