152 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



A species only known from the description in the Nereis, which is quoted above, 

 and from the specimen in Herb. Harvey for an examination of which we are indebted 

 to Prof. E. Perceval Wright. In the absence of fruit, the genus must remain in 

 doubt, and it is hardly likely that the species, as described by Harvey, will be again 

 recognized by American algologists. 



EHODOPHYLLIS, Klttz. 



(From pohv, a rose, and (pv/Jiov, a leaf.) 



Fronds membranouSj dichotoinously compoundj with proliferous or 

 pinuatifid margins, composed of an internal layer of large roundish- 

 angular cells and a cortical layer of smaller cells j tetraspores zonate, 

 immersed in the cortex of the frond or marginal processes ; cystocarps 

 external, subspherical, borne usually on the margin of the frond or on 

 lateral processes, spores arranged around a central carpogenic cell in 

 masses composed of densely packed radiating filaments, whose cells at 

 maturity become irregularly placed. 



A genus comprising about twenty species, which mostly inhabit the Australian 

 coast. They have membranously expanded fronds resembling those of the genus 

 Bhodijmenia, but they are as a rule smaller and thinner, the internal layer consisting 

 of usually two series of cells. The genus is distinguished from Ehodymenia by the 

 zonate tetraspores, and by having the carpogenic cell or placenta in the center of the 

 concej)tacle instead of at its base. In the typical species of Kiitzing, JR. bifida, there 

 iS; according to Dr. Boruet, a large carpogenic cell at the center of the concej)tacle, 

 around which the sporiferous masses are gathered, and the same is true with regard 

 to our own Blwdopliyllis reprecula. 



K. VEPRECULA, J. Ag. {Ciliaria fusca, Eupr. — B. vej^recula and Cal- 

 liblejyharis ciliata^ Harv., IS^er. Am. Bor., Part II, pp. 105, 152, non 

 Ccdlihlei)liaris ciliata^ Kiitz.) 



Fronds deep red, attached by a branching base, two to five inches 

 long, a quarter of an inch to an inch and a half broad, decompoundly 

 dichotomous, margin pinnate, pinnse linear-lanceolate, ciliate, with short 

 subulate or forked teeth j tetraspores zonate, borne in the cortex of 

 the cilia 5 cystocarps subglobose, usually borne at the base of the cilia, 

 often densely aggregated, sometimes borne on the surface of frond. 



Yar. ciRRHATA, Harv. 



Fronds very narrow, dichotomous, the apices cirrhiform, repeatedly 

 forked. 



On the larger algai in five to ten fathoms, and rarely in deep tide- 

 pools. Autumn and winter. 



Campobello Island, Grand Menan, Maine, Frof. Eaton ^ Gloucester, 

 Mass., 17. G. F.; Arctic Ocean. 



The i)resent species is a characteristic Arctic form which occurs as far south as Cape 

 Ann, where it is not rare although hardly common. It is usually found washed ashore 

 late in the autumn or in winter. It is recognized by its beautiful red color and frond 



