ei 
Coeloblasteae. | 
Codium latum n. sp. e basi euneata valde dilatata plana 
passim pertusa medio bifurcata, laciniis ex axillo rotundato 
divergentibus sursum paullum angustatis apice bilobis obtusis. 
Color atroviridis; cellulae periphericae 0.38 mm. = "/s‘longae, 
0.07 mm. == "gs Jatae; frons sieca 24 c.m. longa, infra 
bifurcationem 3"/2 c.m. lata, basis laciniarum 3 et 4 c.m. 
Acanthocodium, nov. genus. 
Habitus et structura Codii, at cellulis peripherieis apice 
acuminatis spinescentibus. 
Acanthocodium fragile; fronde cylindrica 2 mm. crassa 
subdiehotome ramosa cinereo - viridis fragilissima. Cellulis 
peripherieis 1,57 mm. — !/«“ longis, 0.075—0.115 mm. = 
1/90 — 1/20’ erassis. 
Fucoideae. 
Hydroclathrus cancellatus Bory. — Spathoglossum multi- 
partitum (Sukr.) Kg. — Chnoospora atlantica (Ag.) Kg.? — 
Phyllitis debilis (Ag.) Kg. — Alaria pinnatifida Harvey, 
forma junior. — Laminaria? saccharoides Lenormand in 
literis, radice ramosa, stipite firmo breviusculo compresso 
superne cuneato plano in frondem transiente giganteam lineari- 
lanceolatam coriaceam, costis 1—3 spurüs latis diffusis sae- 
pius evanidis pereursam, passim pertusam, apice longe pro- 
duetam ibique margine undulatam. — Sargassum carpo- 
ker Ag. — Sargassum gracile Ag. — S. Horneri Ag. — 
arg. pinnatifolium Ag. — Sarg. scoparium Ag. — Sarg. 
serratifolium Ag. — Sarg. Siliquastrum Ag. -— Sarg. sisym- 
brioides Ag. — Cystophyllum Swartzü Ag. 
Florideae. 
Hormoceras flaccidum Harvey. — Campylaephora hyp- 
neoides J. Ag. — Porphyra vulgaris Ag. — Schizymenia 
ligulata n. sp. frondibus ex apice stipitis brevis filiformis 
prodeuntibus 2—4 longe ligulatis e basi lineari sensim dila- 
tatis paullulum undulatis et curvatis simplieibus aut supra 
medium subdichotomis passim ramulosis, apicibus denuo an- 
gustatis in pluribus abruptis. Color coceineo-fuseus; frondes 
ad 22 c.m. Maas, ad 2 c.m. latae, madefactae carnosae. — 
Chondrus punctatus n. sp., fronde membranacea repetite (ad 4) 
dichotoma flabellata, segmentis cuneatis superne dilatatis, 
apieibus obtusis bilobis passim latissimis proliferis, cystocarplis 
in inferiore frondis parte sub-immersis minimis punctiformi- 
bus. Color “purpurascens, structura Chondri crispi, cujus 
speciei insuper habitu exemplar parvum simulat. — Gigartina 
tenella Harvey. — Gigartina intermedia n. sp. fronde Aliformi 
