Marine Alyce of Berwick-on-Tweed. 389 



INDEX OF GENERA. 



(The Synonyms incidentally mentioned are printed in Italics.) 



Acanthoceras, 328. 

 Acrocarpus, 346. 

 Acrochaitium, 318, 320. 

 Actinococcus, 314, 3152. 

 Aglaophyllum, 341. 

 Aglaozouia, 302. 

 Ahnfeltia, 333. 

 Alaria, 296. 

 Alsidium, 355. 

 Anabaina, 240. 

 Antithamnion, 321. 

 Ascocyclus, 361. 

 Ascophyllum, 305. 

 Asperocaulon, 324, 356. 

 Asperococcus, 294, 295. 



Bangia, 233, 268, 309, 310. 

 Battersia, 279. 

 Beggiatoa, 231. 

 Belonia, 240. 

 Bonnemaisonia, 353. 

 Bostrychia, 355. 

 Bryopsis, 264. 



Callithamnion, 318-324. 

 Callophyllis, 332. 

 Calothrix, 238, 243, 244. 

 Capsicarpella, 278. 

 Oastagnea, 293. 

 Catenella. 345. 

 Ceramium, 327, 328. 

 Chaetomorpha, 253, 254. 

 Chcetophora, 292, 293, 315. 

 Chaetopteris, 284. 

 Ohantransia, 318. 

 Chlorochytrium, 315. 

 Chlorosiphon, 268. 

 Chondria, 336, 345, 354. 

 Chondrothamnion, 336. 

 Chondrus, 331, 332. 

 Chorda, 267, 295. 

 Chordaria, 270, 292, 295, 345. 

 Choreocolax, 362. 

 Chrysymenia, 336, 337. 

 Chthonoblastus, 238. 



Chylocladia, 336, 337. 

 Cladophora, 259-263. 

 Cladostephus, 284, 286. 

 Codiolum, 264. 

 Conferva, 253, 254, 257, 

 Corallina, 360. 

 Corynephora, 292. 

 Cruoria, 313, 314, 315. 

 Cryptopleura, 340, 342. 

 Cylindrospermum, 240. 

 Cystoclonium, 335. 

 Cystosira, 302. 



Dasya, 355. 

 Dasyactis, 242. 



Delesseria, 340, 342-344, 348. 

 Dermocarpa, 230, 231, 361. 

 Desmarestia, 269, 270. 

 Desmia, 269, 270. 

 Dichloria, 269. 

 Dichophyllum, 306. 

 Dictyosiphon, 270, 272. 

 Dictyota, 306. 

 Diploderma, 309. 

 Diplonema, 251. 

 Diplostromium, 268. 

 Dumontia, 326, 331, 345. 



Ectocarpus, 274-278, 361. 

 Blachista, 274, 290, 291. 

 Enccelium, 294, 295. 

 Bnteromorpha, 246-252. 

 Epicladia, 252. 

 Erythrotrichia, 310. 

 Euactis, 241. 

 Eucladophora, 261. 

 Eudesme, 294. 

 Euralfsia, 286. 

 Euthora, 339. 



Fastigiaria, 330. 

 Fistularia, 294. 

 Fucodium, 305, 306. 

 Fncus, 302-306. 

 Furcelluria, 330, 347, 348. 



