KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 63- N:0 8. 57 



Colacopsis De Toni 



C. Lophurellae Kylin in K. & Skottsb. p. 61, f. 30 — 31. 



South Patagonia: Fitzroy Channel, 13 — 14 m, on Lophurella Hookeriana 



(St. 17, 18.4.08, <?, $, ©). 



Distribution: S. Patag. (first record), Fuegia, Falkl. 



Heterosiphonia Mont. 



H. Berkeleyi Mont. — Kylin & Skottsb. p. 63, f. 32 c. 



Fuegia: Slogget Bay, on Plumaria Harveyi in beacli drift (St. 47 b, 16. 3. 09, 

 cJ). Falkland Islands: Halfway Cove, 8 m, rocks (St. 5, 24. 11. 07). 

 Distribution: W. Patag., Fuegia, Falkl., Kerg., Marion I., Auckl. I. 



H. punicea (Mont.) Kylin in Kylin & Skottsb. p. 65, f. 32 b. 



West Patagonia: Puerto Bueno, 1 — 3 m, sand with shells (St. 27, 3. 6. 

 08). Fuegia: Slogget Bay, washed ashore attached to Ahnfeltia and Acanthococcus 

 (St. 47 b, 16. 3. 09). Falkland Islands: Cape Pembroke, in tide-pools on cal- 

 careous algae (St. 3 b, 7.11.07). 



Distribution: W. Patag. (first record), Fuegia (first record), Falkl., Auckl. I. 



H. merenia Falkenb. — Kylin & Skottsb. p. 65, f. 32 a. 



South Georgia: Cumberland Bay, Boiler Harbour, 5 m (St. 48, 20. 4. 09). 

 Distribution: S. Georgia. 



Ceramiaceae. 

 Griffithsia Ag. 



G. antarctica Hook. Fil. et Harv. Fl. Ant. II p. 488. — Fig. 27 — 29. 



Syn. Bornetial antarctica De Toni, Syll. Alg. p. 1297; Cotton, Crypt. Falkl. p. 189; 

 Kylin & Skottsb. p. 66. 



Falkland Islands: Cape Pembroke, in tide-pools, scarce (St. 3b, 7. 11. 

 07, S, $, ®). 



As there has been much uncertainty regarding the generic position of this species, 

 only sterile specimens being known bef ore, and as I possess good material of both genera- 

 tions, I shall give a brief description of each kind. In the male plant (fig. 27 a) 

 the fertile branchlets arise round the top of a subterminal cell (fig. 28 a — c); it is more 

 swollen than the rest and becomes more or less pear-shaped. The terminal joint may 

 or may not continue to grow and divide again. The development of spermatanges is 



K. Sv. Vet. Akad. Handl. Band 63. N:o 8. 8 



