96 University of California Publications in Botanij [Vol. 6 



by Berggren and named and cited by Agardh under the above refer- 

 ence (J. Ag., 1877, p. 26). As I shall show later, this is a Gloiophloea 

 and, as I assume, identical with Gloiophloea Scinaioides J. Ag. How- 

 ever, a specimen collected at Port Phillip Heads near Melbourne. 

 Australia, by J. Bracebridge Wilson and distributed by him under 

 the name of Scinaia furcellata, is, in my opinion, neither a Scinaia 

 nor a Gloiophloea, but a member of a new genus which later on in 

 this paper I have named Pseudoscinaia. This may prove to be 

 identical with the Scinaia furcellata var. australis J. Ag. It seems 

 questionable, therefore, whether there exists any species of cylindrical, 

 unconstricted Scinaia on the Australian or New Zealand coasts. 



The distribution of typical Scinaia furcellata as limited to what 

 seems to be strictly its proper specific limits, must be stated, in the 

 light of my investigations, as confined to the North Atlantic Ocean 

 and Mediterranean and Adriatic Seas. In the Mediterranean, it seems 

 to be more or less abundant on the northern coasts, but thus far I 

 have no certain knowledge as to its occurrence either on the eastern 

 or on the southern shores. It certainly occurs on the French coasts 

 of the English Channel, in the southern half of the North Sea, in the 

 Irish Sea and on the southwestern Atlantic coasts of Ireland. It is 

 reported from the Canary Islands (Vickers, 1896, p. 302). It also 

 occurs on the southern coasts of New England (INIassachusetts and 

 Rhode Island). It does not seem desirable to quote all the localities 

 whence I have examined specimens, but I may note that, besides the 

 type specimen, I have been enabled through the kindness of Dr. Paul 

 Kuckuck to examine a series collected at Helgoland, as well as a 

 number from the northwestern shores of France. I have also studied 

 a number of specimens collected on the western shores of Italy, 

 kindly supplied by Dr. Angelo Mazza and by Miss IMinnie Reed, and 

 from the southeast coast of France collected by Dr. W. G. Farlow. 

 The New England specimens are largely of my own collecting in the 

 neighborhood of Woods Hole, Massachusetts, and of Watch Hill, 

 Rhode Island. They differ slightly but apparently not essentially from 

 those of Europe. 



In the second subgroup of the cylindrical, continuous species, the 

 colorless cells of the epidermis, or utricles, are flattened on the outer 

 ends and closely pressed together, so that a surface view (tangential 

 section) shows them as polygonal (5-7-gonal) areas of fairly uniform 



