332 EXPEDITION TO JAPAN. 



utrinque attenuates ramuliferis, ramulis crebris patentibus filiformibus setaceis. — Hakodadi. I 

 bave only seen two branches, as they appear to be, and am ignorant of the ramification of the 

 perfect frond. The branches are 6 to 8 inches long, about a line in diameter, and densely set 

 throughout with very patent prolifications. The structure of the frond is much denser than 

 that of H. sobolifera. 



16. Gymnogongyrus furcellatus, Ag. (?) Simoda and Webster's Island. 



17. Gymnogoryrus flabelliformis, Harp. (n. sp.) : fronde pumila, compresso-plana anguste 

 lineari pluries dichotoma ambitu flabelliformi, segmentis apice vix dilatatis fastigiatis obtusis v. 

 emarginatis. — Simoda. Not two inches high, resembles a small specimen of the narrow varie- 

 ties of Chondrus crispus. 



18. Gymnogoryrtjs pinnulatus, Harv. (n. sp.) : fronde elata stipitata dichotoma et vage pro- 

 lifera, ramis primariis linearibus compresso-planis, superioribus prolificationbusque complanatis 

 cuneatis furcatis e margine pinnatis, pinnis linearibus obtusis, axillis omnibus latis ; cystocarpiis 

 ovalibus maculfeformibus immersis. — Hakodadi. 



19. Cystoclonium? armatum, Harv., (n. sp.) : caule subsimplici compresso ramis lateralibus 

 densissime onusto, ramis compressis longissimis subsimplicibus flexuosis acutis basi angustatis, 

 ramulis divaricato-patentibus subulatis brevibus secus ramos sparsis, cystocarpiis (saepe binis) in 

 ramulis immersis oblongis. —Hakodadi. This has the habit of Gracillaria armata, and a struc- 

 ture of frond not very dissimilar, but the fruit is that of a Cystoclonium. There is no medullary 

 stratum of filaments. 



20. Nemastoma livida, Harv., (n. sp.): gelatinoso-carnosa, purpurascens, stipite brevi ramoso, 

 ramis complanatis basi cuneatis mox linearibus plus minus dichotomis, segmentis superioribus 

 angustioribus ultimis attenuatis. — Simoda. A single specimen. 



21. Gloiosiphonia capillaris, Carm.; Harv. Ner. Bor. Amer. 2, p. 202. Hakodadi. 



22. Ceramidm rtjbrum, Auct. Hakodadi ; apparently common. 



There are 30 species of Algce in the collection. Besides these, there are fragments of Hypnea 

 musciformis, and one or two others not easily determinable ; and a specimen of an Alga, not in 

 fruit, whose genus I am unable to determine. It is possibly allied to CJiylocladia, or to 

 Bhabdonia. 



