NISSAN (Green, Sir Charles Hardy's).—4° 31' S, 154° 11' E.
NUKUMANU (Le Maira, Tasman).—4° 32' S, 159° 25' E.
ONTONG JAVA (Lord Howe Atoll, Liuniuwu).—5° 25' S, 159° 30' E.
PAVUVO.—9° 04' S, 159° 08' E.
RAMOS.—8° 16' S, 160° 11' E.
RENNELL.—11° 38' S, 160° 14' E. This island, of limestone (coral) origin, along with Bellona, is nearly 100 miles southwest of any other member of the Solomons and has been regarded, because of this distance, as an oceanic island instead of a continental island. It is about 50 miles long (east-west) and nine miles wide (north-south); its highest elevation is 500 feet.
ROVIANA (Rendova, Rovianna, Rubiana).—8° 21' S, 157° 20' E.
RUSSELL.—9° 04' S, 159° 12' E.
SAN CRISTOBAL (San Christoval, Bauro, Makira, Arussi).—11° 33' S, 161° 43' E. This island is composed mostly of ancient volcanic rock, has a maximum elevation of 4100 feet, is nearly 70 miles long (northwest to southeast) and 24 miles wide, and supports a dense rain forest.
SANTA YSABEL (George, Ysabel, San Isabel, Isbel, Mahaga).—8° 00' S, 159° 07' E. Santa Ysabel is a long (90 miles from northwest to southeast), narrow (19 miles at the widest spot), forested island, consisting of a single chain of volcanic mountains. The numerous bays and mouths of rivers provide excellent anchorages. Collecting was at Tatamba approximately two miles south of Tanambuli where the considerable area of forest was dense and bamboo thickets were abundant.