71 



upon specimens also from this island. It is rather common here, 

 occurring both in shallow and deeper water down to a depth of 

 about 5 fathoms. It is found both in more open but especially 

 in sheltered localities in the shallow areas of sea behind the coral 

 reefs. Here it often occurs loose in the form of y^gagropila-like 

 clumps. It was found with sporangia in January — March. 



St. Croix: Off Frederikssted, Lt. Princess, the harbour of Christi- 

 anssted, Long Reef, Casavagarden. 



Geogr. Distrib. The West Indies, Brazil. 



Fam. 3. Dasyeladacece. 



The following remarks on the species found are nearly the 

 same as those given in my preliminary note : »The Dasycladaceae 

 of the Danish West Indies* (Botanisk Tidsskrift, 1908, vol. 28, 

 p. 271). 



Sub fam. 1. Dasycladece. 



Neomeris Lamouroux. 



Neomeris annulata Dickie. 



Dickie, On the Algae of Mauritius (Journal Linnean Society, vol. 14, 

 p. 198). H. Solms-Laubach, Ueber die Algengenera Cymopolia, Neomeris 

 und Bornetella (Ann. du Jardin bot. de Buitenzorg, Vol. XL 1893). Bor- 

 GESEN, 1. c, p. 271. 



Neomeris Kelleri Cramer, Ueber die verticillirten Siphoneen besonders 

 Neomeris und Cymopolia (Neue Denkschriften der schweiz. naturf. Gesell- 

 schaft, Bd. XXX, 1887), and Ueber die verticillirten Siphoneen besonders 

 Neomeris und Bornetella (Neue Denkschriften, Bd. 32, 1890). Vickers, 

 Phycologia Barbadensis, tab. 46, 1908. 



Exsicc, Phycotheca Boreali-Americana, Nr. 668. 



Besides the typical form, which I have collected in great 

 quantities, I have found a few specimens which in the form and 

 size of the sporangia show some difference. The sporangia were 

 namely cylindrical about 2V2 times as long as broad with the 

 apex obtuse, rounded (see Fig. 55 d). The spore was about 190 /^ 

 long and 70/-? broad. As to the size of the spores of N. annulata 

 SoLMS (1. c. p. 71) gives the length to be 140 n and the breadth 

 65 — 10 [J- and these dimensions agree very well with those of the 

 common typical form. But sometimes also other sizes are to be 

 found, in one specimen e. g. the dimensions of the spores were 

 160 /i long and 80/-< broad and in another from deep water (25 

 fathoms) the spores were 175 n long and 80 // broad, and as the 

 form of the spores also seems to be rather variable (compare the 



