412 
in Sallingsund; Agersund harbour; Nibe, pier; Aalborg; Hals harbour. — Kn: Skagen harbour; Herthas 
Flak c. 20 m; Hirsholm; Deget; Frederikshavn harbour; off Laurs Rev; off Marens Rev; north of Læso, 
on Hyas (E. Bay); Trindelen (Borgesen); fG, W. of Læso Trindels light-ship. — Ke: Fladen IM, ZF, 
ZE, VY, 16—26,5 m; EV, south end of Groves Flak; EU, Lille Middelgrund, 14 m; IA, IB, HY, Store 
Middelgrund; off Gilleleje, Lyngbye (Hutchinsia lepadicola: 1. Marts 1833 in tergo Cancri Aran., and 
26. Mart. 1833 in Lepad. Balano. Hutchinsia abyssina: Juni 1834 in Buccino undato and 31. Marts 1835 
in testa Balani e profunditate 16 org. (30 m)); Gilleleje harbour. — Km: FL, south of Læsø Rende, 
9,5 m. — Ks: Grenaa harbour; HS, Briseis Grund, 7,5—13 m; Nordvestrev by Hesselo (Lyngbye); Holbæk 
Fjord, on Mytilus. — Sa: KJ, south of Hjelm, 13 m; PJ, Ebeltoft Vig; PL, Wulffs Flak; Kalo Rev; 
FS, Vejrø Sund; PA, near Albatros, 7,5 m; PC, between Sejerø and Ordrups Nes; PF, north of Refs- 
næs; Hoy (O. Paulsen); Hofmansgave (Lyngbye, Hofm. Bang, C. Rosenberg); inlet to Odensefjord (Lyng- 
bye, Hutch. stricta). — Lb: Bogense harbour; Fredericia harbour (Hofm. Bang, !); Strib harbour; 
Middelfart; Fæno Sund; off Stenderup; Heilsminde; DF, Remmen; Assens harbour; Aargsund; Aarø; 
DA, Bojgden; CZ, Hornenæs; dH’, E. of Hesteskoen, 18—19 m; dQ, south of Lyde, 22 m; Sønderborg 
harbour (10 cm long). — Sf: Soby harbour; UV, north of Ere, 13 m; Aaso, Langeland; Marstal harbour; 
Ærø (Kjærbølling). — Sb: Kalundborg harbour; eT, Ryggen; Stavreshoved; Kerteminde harbour; Nyborg, 
harbour and Avernakhage; DN, Vengeance Grund, 12 m; UK, Langelandsbelt, 12 m; Spodsbjerg harbour. 
— Su: Hellebæk (Ørsted); Blokhus Grund north of Helsingør, 13 cm long (Boye Petersen); Helsingør 
(Liebman, P. lepadicola); bM, south of Hveen, 22,5 m; Taarbæk Rev, 6m. — Bw: Sonderhav and 
Brunsnæs in Flensborg Fjord, piers; pier at the East end 
of Sonderkoy, Als; dP, Bredegrund south of Als; dK, Pols 
Rev; DU, off Dimesodde, 11m. — Bm: 7,5 miles E. of 
Hellehayns Nakke, 27 m (C.A. J.). 
2. Polysiphonia orthocarpa K. Roseny.n. sp. 
Cæspitosa, c. 7 cm alta, filis erectis nume- 
rosis, e filis repentibus exeuntibus, inferne 
rhizoideis numerosis, partim fasciculatis, sub- 
strato non adfixis, instructis, sursum paululum 
attenuatis, articulis tetrasiphoniis non corticatis, 
in parte inferiori filorum ad geniculas leniter 
incrassatis. Rami in axillis pilorum (trichobla- 
storum) oriuntur; rami axillarii secundarii, e 
cellulis basilaribus pilorum deciduorum orti, 
desunt. Fila inferne crass. 135—160 y, articulis 
diametro 1,5—2,5-plo longioribus, in parte media 
articulis diametro 4—6-plo longioribus, superne 
crass. 40—60 4. Tetrasporangia in ramulis toru- 
Fig. 350. 
Polysiphonia orthocarpa. A, portion of decumbent ” 
branch and the lowermost part ofan erectbranch losis longe spiraliter seriata. Antheridia ignota. 
given off from it. 50:1. B, trichoblast with 
axillary branch. 150:1. 
Cystocarpia subglobosa, ostiolo apicali, non pro- 
tracto. — Color fusco-purpureus. (Plate V fig. 1). 
This species which was found in two localities in the Limfjord in some re- 
spects resembles P. violacea but it differs from it particularly by the much developed 
creeping filaments and the caespitose growth and further by the want of cortication 
and of secondary axillary shoots. By these characters it agrees with P. Rhunensis 
