115 



St. Croix: Christianssteds Lagoon, common in shallow water upon 

 soft muddy bottom, White Bay (10 meters of water). St. Thomas: Bovoni 

 Lagoon in shallow water, in the sea west of Water Island in a depth of about 

 30 — 40 meters of water. 



Geogr, Distrib. West Indies, Indian and Pacific Oceans. 



Subfam. 3. Codiece. 

 Codium Stackh. 



Of this genus I have only collected rather scanty material, 

 so that I have not been able to make any detailed examination 

 of the species belonging to it. 



1. Codhim difforme Kiitz. 



KtiTziNG, Phycologia generalis, 1843, p. 309; Tabular phycologicae, 

 vol. VI, pi. 99. VicKERS, Phycol. Barbad., tab. XXV. 



The size of the utricles varies considerably, their diameter 

 being mostly about 150//, but sometimes reaching even 300/^. 



Only a few specimens have been found. I have collected it near 

 Lt. Princess, St. Croix, in rather shallow water; another specimen was 

 sent by Mr. O. Hansen Ganneskov at St. Croix and most probably 

 collected at the south coast of the island. 



Geogr. Distrib. Mediterranean, West Indies, warmer Atlantic and 

 Pacific Oceans. 



2. Codium tomentosum (Huds.) Stackh. 



Stackhouse, Nereis Britannica, 1795, p. 21, pi. VII. Harvey, Phyco- 

 logia Britannica, pi. XCIII. J. Agardh, Till Algernes Systematik, VIII, 

 Siphoneaj, p. 40. 



Utricles 100—150, seldom 200/^ diam. 



This species occurs both in more open places in shallow water, 

 where it is under the influence of the waves and in sheltered loca- 

 lities, lagoons etc, and also in deep water. 



St. Croix: Christianssteds Lagoon, Cane Bay. St. Thomas: In 

 the harbour (leg. Orsted). St. Jan: Near Thatch Island in a depth of 

 about 30 meters. 



Geogr. Distrib. Widely spread In all temperate and warmer seas. 



3. Codium isthmocladum Vickers. 



ViCKERs, Liste des Algues marines de la Barbade (Ann. sc. nat. 9. 

 serie, vol. 1, 1906, p. 57); Phycologia Barbadensis, tab. XXVIII. 



I have referred several rather variable forms to this species, 

 quite typical specimens not being found. 



8* 



