NO. 1 DURHAM, BARNARD: EASTERN PACIFIC STONY CORALS 93 



The depth of the cah'ce is also a variable characteristic; usually as- 

 sociated with deep calices and vertical inner septal ends are thick, 

 crowded, smooth, rounded pali and a rather dark corallum which does 

 not bleach well in 5 per cent NaOCl. Specimens at the other extreme 

 with rather shallow calices have thin, wide, heavily granulated pali with 

 flat summits ; these specimens bleach almost white. 



A discussion of the costal characteristics is to be found under P. 

 tiburonensis Durham. 



This species has been previously recorded from British Columbia 

 southward through the Channel Islands at depths of 12-200 fms; also 

 reported in the Pleistocene of San Pedro, California. 



Hy pomes: Cat. nos. 55.5 (Sta. 1012-39), 55.23 (Sta. 1254-41), 

 55.26 (Sta. 1271-41), 55.41 (Sta. 1325-41), 55.54 (Sta. 1418-41). 



Material examined: Stas. 891-38 (1), 894-38 (7), 913-39 (5), 

 999-39 (2), 1012-39 (7), 1120-40 (7), 1122-40 (2), 1123-40 (5), 

 1154-40 (1), 1170-40 (1), 1177-40 (1), 1179-40 (20), 1181-40 (5), 

 1183-40 (1), 1190-40 (1), 1191-40 (8), 1207-40 (4), 1219-40 (10), 

 1232-41 (2), 1245-41 (1), 1250-41 (1), 1252-41 (1), 1254-41 (1), 

 1259-41 (17), 1270-41 (23), 1271-41 (9), 1276-41 (12), 1280-41 

 (14), 1281-41 (2), 1282-41 (1), 1283-41 (10), 1284-41 (9), 1287-41 

 (3), 1292-41 (5), 1295-41 (17), 1298-41 (6), 1300-41 (2), 1303-41 

 (1), 1309-41 (2), 1316-41 (16), 1325-41 (1), 1336-41 (1), 1338-41 

 (2), 1339-41 (2), 1340-41 (3), 1348-41 (4), 1350-41 (1), 1358-41 

 (1), 1365-41 (2), 1372-41 (1), 1374-41 (2), 1391-41 (5), 1416-41 

 (1), 1418-41 (3), 1419-41 (3), 1421-41 (3), 1426-41 (7), 1432-41 

 (1), 1624-48 (8), 1644-48 (4), 1659-48 (8), 1662-48 (23), 1886-49 

 (5), 1903-49 (2), 1920-49 (1), 1937-50 (8), 1938-50 (8), 1939-50 

 (1), 1942-50 (2), 1948-50 (5), 1990-50 (1), 2007-49 (1), 2042-51 

 (3), 2043-51 (17). Accession nos. 267 (2), 485 (1), 500 (1), 564 

 (4), 616 (3), 658 (2), 661 (5). Bottom samples 1221 (6), 1255 (1), 

 1257 (1), 2166 (2). Hubbs 47-85. (4). Burch 4026 (30). Off San 

 Pedro, coll. by K. O. Emery, 10-13 fms (2). East of Santa Barbara 

 Island, July 30, 1919 (1); Catalina, July 12, 1925 (2); off Rocky 

 Point, Calif. 50 fms, Oct. 5, 1941 (1). 33° 27' 42'' N, 119° 00' 45" 

 W, in 132 ft (2). 



Distribution: Southwest of Point Pinos, California, south through 

 the Channel Islands to 8J^ mi south of Dewey Channel, Lower Cali- 

 fornia. Bathymetric range, shoal to 489 fms, most of the records occur- 

 ring between 15 and 60 fms. 



