OF ARTS AND SCIENCES. 329 



8. Cystophtllum fusiforme : radice ramoso ; frondibus ex collo 

 in caulcs plures divisis ; caulibus indivisis tereti-compressis, ramis 

 lateralibus undique egredientibus ci-ebris brevibus ramulis subfasci- 

 culatis onustis, ramulis lineari-fusiformibus utrinque acutis medio sajpe 

 vesiculiferis ; vesiculis fusiformibus ; receptaculis ignotis. 



Var. /3. CLAviGERUM : ramis ramulo longissimo claviformi infra 

 apicem vesiculifero subtensis, ramulis filiformibus. 

 On rocks at low tide, Simoda. /3. Hakodadi, Japan. 



9. Fucus (Fucodium) Weightii : fronde lato-lineari complanata 

 decomposite dicbotoma ramosissima ; vesiculis ovalibus v. bilobis in ramis 

 superioribus vel soepe in axillis ipsis immersis ; receptaculis ignotis. 



Straits of Sangar, Japan. 



10. Fucus (Fucodium) Babingtonii : fronde angustissima com- 

 presso-plana decomposite dichotoma fastigiata ; vesiculis oblongis an- 

 gustissimis in ramis superioribus infra axillas immersis ; receptaculis 

 linearibus terminalibus simplicibus furcatisve. 



Japan (Dr. Babington in Herb. T. C. D.) : rocks at Simoda ; Hong 

 Kong. 



11. EcKLONiA Wrightii: stipite brevi robusto compresso apice 

 subpalmatim ramoso (vel crebre dichotomo ?) ; ramis in frondes pin- 

 nati-lobatas expansis, laciniis sublanceolatis basi angustatis injequaliter 

 argute serratis. 



Simoda, Japan, on rocks at low tide. 



12. Alaria pinnatifida : stipiti ancipite sursum complanato cris- 

 pato-raarginato in costam latam apice desinente ; lamina latissima pro- 

 funde pinnatifido-lobata, laciniis oblongis simplicibus furcatisve sinubus 

 rotundatis, pinnis crassis obovatis brevibus. 



Simoda, Japan. 



13. CoSTARiA TuRNERi (Grev.) ; var. pertusa : stipiti ex radice 

 ramosa piano in laminam longissimam (11 - 12-pedalem) lanceolatam 

 4-costatam bulloso-inflatam demum foraminibus pertusam expanso. 



Straits of Sangar and Hakodadi Bay, Japan. 



14. DiCTYOTA obtusangula: fronde anguste linear! incrassata 

 succulenta opaca decomposite dichotoma ; axillis omnibus latissime 

 rotundatis ; laciniis patentibus divaricatisve, supremis irregularibus, 

 apicibus obtusis nunc multifidis. 



Loo Choo and Ousima. (Also common at the Friendly Islands.) 

 VOL. IV. 42 



