EXPLANATION OF PLATES. 



PLATE LXXXIV: i. Cladophora crystatttnaXlli. 2. Udotea cyathiformisXi i/io. 3. Udotea cyathi- 



formisX4/S circ. 4. Bryopsis plumosaX6o[6j. 



PLATE LXXXV: i. Codium tomentosumXiJ6. 2. Codium decorticatumX8l2'j circ. 

 PLATE LXXXVI: i. PetaloniafasciaXzilsocirc. 2 - Rosenvingea orientalisX 3/8 circ. 

 PLATE LXXXVII: i. Castagnea zosterceXjilioo. 2. Stilophora rhizodesXisIsS circ. 

 PLATE LXXXVIII: i and 2. Leathesia difformisX^li circ. 3. Sporochnus pedunculatusX*li. 

 PLATE LXXXIX: FucusvesiculosusX.2l$. 



PLATE XC: i. Sargassum natansX 1/4 circ. 2. SargassumfilipendulaXi/3 circ. 

 PLATE XCI: i. Zonaria fla-va, bearing Spermothamnion investiensX2[3 circ. 2. Zonaria variegataX 



S/8circ. 



PLATE XCI I: i. Padina -vickersice (type) X 1/4 circ. 2. PadinamckersiceXi/2. 

 PLATE XCIII: i. Spatoglossum schraederiXifo circ. 2. Dictyopteris polypodiodesXi/3 circ. ^.Dictyop- 



teris serrataX2/5 circ. 

 PLATE XCIV: i. Dictyota dichotoma, usual form from Fort Macon jetty, o, male; b, femaleX2/5. 2. a 



and b, Spatoglossum schrcederiX 38/87; c and <f, Dictyota dichotoma, narrow form from coral 



reefX38/87. 3. Dictyota dichotoma, male, bearing proliferations from apicesXi/3- 

 PLATE XCV: i. Gelidium coerulescensXs/S circ. 2. Gelidium crinaleXi 3/5- 3- Gymnogongrus griffith- 



siaXi/z circ. 

 PLATE XCVI: i. Agardhiella tenera, usual formXiS/29. 2. Agardhiella ienera, slender form from coral 



reef X 1/3 circ. 

 PLATE XCVII: i. Meristotheca duchassaingii; a, cystocarpic; b, tetrasporic, bearing Streblonema in-vis- 



i&tfeX 11/28 circ. 2. Meristotheca duchassingiiXiil 36 circ. 



PLATE XCVIII: i. Rhabdonia ramosissimaXg/^6 circ. 2. Eucheuma gelidiumX 2/7 circ. 

 PLATE XCIX: i. Gracilaria confervoides , cystocarpic X 2/5 circ. 2. Gracilaria multipartita, from harbor; 



a and 6, sterile; c, cystocarpic X 16/3 5 circ. 

 PLATE C: i. Hypnea musciformis , type i, tetrasporic X 2/5 circ. 2. Hypnea musciformis, type 2, cysto- 



carpicX2/5 circ. 

 PLATE CI: i. Hypnea musciformis, type 3, cystocarpic X 9/26. 2. Hypnea musciformis, winter condition 



X4/S- 3- Rhodymenia palmettaX2$[3g. 4. Rhodymenia palmettaXgl2& circ. 

 PLATE CII: i. Agardhinula brownea, cystocarpicXy/12. 2. Chrysymenia agardhiiXi[2. 

 PLATE CIII: i. Chrysymenia enteromorpha, from Bogue Beach X 1/2 circ. 2. Chrysymenia enteromorpha 



from coral reef X 2/5 circ. 

 PLATE CIV: i. Chrysymenia uvariaX 7/12 circ. 2. Lomen taria uncinataX 3/4. 3. Lomentaria roseaXi/3 



circ. 4. ChampiaparvulaXblj. 

 PLATE CV: Nitophyllum medium; i. Sterile, densely branched X 3/7 circ. 2. Type, veins evident, 



tetrasporangial sori in rather irregular linesXi/3 circ. 3. Veins conspicuous, tetrasporangial son 



in unusually regular lines or very irregularX3/7 circ. 

 PLATE CVI: i. Grinnellia americana, tetrasporic X 3/7 circ. 2. Laurencia tuberculosa var. gemmiferaXsfs 



circ. 

 PLATE CVII: i. ChondrialittoralisXilzcirc. 2. Chondria dasyphylla, winter condition Xi/i. 3. Chon- 



dria tenuissima var. baileyanaXsl&. 4. Chondria dasyphyllaXsIS circ. 

 PLATE CVIII: i. Chondria sedifolia, cystocarpic X 3/5 circ. 2. Chondria sedifolia, tetrasporicX 9/20 circ. 



3. PolysiphoniahavanensisXjIiS- 4. aandb,Polysiphoniadenudata; c, PolysiphoniaharveyiXio/ii. 

 PLATE CIX: i. PolysiphoniadenudataX4[n circ. 2. Polysiphonia denudataX 14/17. 3. Polysiphonia 



nigrescensX*$li6. 4. Brongniartella mucronataX 19/30. 



PLATE CX: i. Herposiphonia tenellaon Gracilaria multipartitaX 1 1 2 2. Dasya pedicellataX 29/56. 

 PLATE CXI: i. SpyridiajHamentosaXiolzi. 2. Cerawittw rubrumXilz circ. 3. Ceramium strictumX 



7/iS- 



554 



