8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 98 



Penicillus capitatus Lamarck 



Old Providence Island, Colombia ; bottom sample at anchorage 

 (Schmitt 30), in coral sand in shallow water (Schmitt 36) ; August 6, 

 1938. 



Penicillus dumetosus (Lamouroux) Blainville 



In coral sand, shallow water, Old Providence Island, Colombia 

 (Schmitt 35), August 6, 1938. 



Rhipocephalus phoenix (Ellis & Solander) Kiitzing, near f. typicus Gepp. 



On coral sandy bottom in shallow water, Old Providence Island, 

 Colombia (Schmitt 33), August 6, 1938. 



Udotea conglutinata (Solander) Lamouroux 



On shells in coral sandy bottom in shallow water, Old Providence 

 Island, Colombia (Schmitt 34), August 6, 1938. 



CHAROPHYCEAE 



CHARACEAE 

 Chara sp. 



Sterile, and so quite undeterminable. However, the leaves had 

 naked basal internodes more than twice as long as broad, much exceed- 

 ing the bracteoles, so it is probable that the plants belong to the same 

 group as C. elegans. 



Scanty, with Lyngbya versicolor, from the lagoon back from the 

 landing place, Clipperton Island, Mexico (Schmitt 21), July 21, 1938. 



PHAEOPHYCEAE 



DICTYOTACEAE 



Dictyopteris delicatula Lamouroux 



On the basal parts of Zonaria variegata, rocks south of the land- 

 ing place, Clipperton Island, Mexico (Schmitt 15), July 21, 1938; 

 probably from reef pools, Old Providence Island, Colombia, with 

 Valonia ventricosa (Schmitt 32) and with Amphiroa fragilissima 

 { Schmitt 49), August 6, 1938. 



Dictyota crenulata J. Agardh 



Dredged sparingly with GrifHthsia in 12-20 m. on a sandy bottom 

 off Punta Gorda and nearby, Cap San Lucas, Baja California, Mexico 

 (Schmitt 7), July 19, 1938. 





