— 195 — 



It was found with antheridia in February and with tetraspo- 

 rangia in March. 



This species occurred both in shallow water in sheltered 

 localities and in deep water down to a depth of about 20 fathoms. 





Fig. 13. Champia parvula (Ag.) J. Ag. 



A, part of the membrane seen from above and fl, transverse section of a male plant 



(350 : 1). 



St. Croix: Christianssteds Lagoon (epiphytic on Thalassia te- 

 studinum), Krausse's Lagoon. St. Jan: Off America Hill (about 15 

 fathoms), Off Ramshead (about 20 fathoms). 



Cliampia salicornioides Harv. 



Harvey, W. H., "Nereis Boreali-Americana", Part. II, p. 76, 

 tab. XIX B. 



This species was found in few specimens in the sea around 

 St. Jan. It resembles to some extent Champia parvula, not only 

 in its outer habit but also in its anatomy. Bigelow has pointed 

 this out in his paper: "On the structure of the frond in Champia 

 parvula, Harv."*), where he also gives a short description of the 

 species in question (p. 118). 



^) Reprinted from the Proceedings of the American Academy of Arts and 

 Sciences, vol. XXIII. 



13* 



