4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 68 



species is of rather common occurrence on the shores of the West 

 Indian region, finding its best development on old coral slabs, rocks, 

 etc., just belov^ the low-tide mark in shallow warm water, in such 

 places, in fact, as are most favored by Dictyosphaeria farulosa. 

 Recent collections by the present writer in Porto Rico are his num- 

 bers 6998 and 6999 (mouth of Guanica Harbor, June 21, 1915), 

 7192 (Cayo Don Luis, June zy, 1915), and 7204 (Salinas Cove, 

 June 27, 1915). 



PHORMIDIUM sp. 



Station 12, between Cabo de San Antonio and Punta del Cajon, 

 in 2-12 fathoms, May 24, 3586. 



Chlorophyceae 

 Family CLADOPHORACEAE 

 CLADOPHORA FULIGINOSA Kiitz. 



Station 11, Ensenada del Cajon, off Cabo de San Antonio, 275 1; 

 station 14, on reef in 2-3 fathoms, coral, sand, and rock bottom, on 

 reef Lavesos Italianos, opposite Cayo Lavesos, June 2, 4261. 



Kijtzing's type of the species was from Havana. This alga, plus 

 its apparently ever-present fungus endophyte, seems to be Harvey's 

 Blodgettia confervoides, described from Key West, Florida. 



CLADOPHORA sp. 



Station 16, Cabaiias, 529. 



Family VALOXIACEAE 



* VALONIA VENTRICOSA J. Ag. " Sea Bottles " 



In shallow water about the keys at Esperansa, i6b; on a reef 

 flat between Cayo Hutia and the little key N. E. of Light, 3ie; 

 station 11, Ensenada del Cajon, off Cabo de San Antonio, 275b; 

 station 13, in 2 fathoms, on mud and gravel, Esperanza. between 

 anchorage and entrance, June 2, 4176. 



* VALONIA MACROPHYSA Kiitz. 



Station 5, Dimas Bay, May 17, 125c; station 8, Los Arroyos, May 

 20, 217b; station 9, in 2-3 fathoms, Cayo Punta del Tolete. 238d; 

 station 11, Ensenada del Cajon. off Cabo de San Antonio, 275J. 



