KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 63. NIO 8- 5 



Helminthocladiaceae. 

 Acrochaetium Naeg. 



A. fuegiense Kylin in Kylin & Skottsb. p. 5, f. 3. 



Falkland Islands: Westpoint Island, in tide-pools on Ballia scoparia 

 (St. 8 b, 5. 12. 07, monosp.); Stanley Harbour, on drifted Corycus (1. 11. 07, monosp.). 



Distribution: Fuegia, Falkl. (first record). 



Chaetangiaceae. 

 Chaetangium Kutz. 



Ch. fastigiatum (Bory) J. Ag. — Kylix & Skottsb. p. 6. 



On rocks, stones and shells in the litoral region, common in many places and ex- 

 tending from the upper litoral to the deeper tidepools. C h i 1 o é: Quemchi, among 

 large boulders in the Bostrychia carpet (St. 30 b, 19. 7. 08, $). West Patagonia: 

 Puerto Charma (St. 28 B, 14. 6. 08); Atalaya Island, with Bostrychia (St. 25, 25. 5. 08, 

 $). South P a t a g o n i a : Arauz Bay (St. 23, 3. 5. 08). Fuegia: Orange Bay, 

 upper litoral with Hildcnbrandia, verv well developed (St. 45, 11.3.09, ?). Falk- 

 land Islands: Westpoint Island, a small, much less divided form (St. 8 a, 5. 12. 

 07); near Halfway Cove (St. 4, 21. 11. 07); Cape Pembroke, common on rocks and on 

 Mytilus (St. 3, 8. 11.07, ?). 



I have seen two small pieces of Bory's type material: »Halymenia nr. 23, Ma- 

 louines» in Herb. Agardh (no. 32591). Ch. chilense J. Ag. seems to belong to the same 

 species. 



Distribution: S. Chile to Fuegia, Falkl., S. Georgia, Kerg., Auckl. I. 



Gelidiaceae. 

 Gelidium Lamx. 



G. crispum M. A. Howe, Mar. Alg. of Peru p. 94, Pl. 33, 34 f. 1—6. - - Fig. 1 a. 



? Syn. G. filicinum Mont. ex Gay, Hist. de Chile, Bot. VIII, p. 331, tab. 16, fig. 3, 

 non Bory? 



C h i 1 e: Valparaiso, on rocks near Playa Ancha, forming tufts on barnacles (St. 

 41, 2.9.08, e). 



My largest specimens are 2,5 cm high and sterile, but sporophylls occur in some 

 of the smaller plants. Apparently the fronds are young, new ones arising from the stolons 

 or from old basal portions of erect fronds, the species being perennial. My specimens 

 agree very well with Howe's description and figures, but are smaller and less branched. 

 It is possible t hat G. crispum is a broad-leaved form of G. jilicinum Mont. from the 



