164 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



PLATE 70. 

 Eroded Kim of Crater Basin of Thombia, Budd Reef Lagoon, Ringgold Isles. 



PLATE 71. 



Crater of Haleakala, Hawaian Islands, from a height of about 2,000 feet on the 

 edge of the rim. 



PLATE 72. 



Northeast side of Vanua Mbalavu Island, seen from inside of the Lagoon. The lo\y 

 ridge along the shore consists of elevated limestone, also the conical hill to 

 the left ; the rounded hills in the background are part of the volcanic nucleus 

 of the island. 



PLATE 73. 



Northeast Point of Ngillangillah Island, inside Vanua Mbalavu Lagoon, seen from 

 the East. Elevated limestone. 



PLATE 74. 



Canon, east shore of Ngillangillah Island, Vanua Mbalavu Lagoon. Elevated 

 limestone. 



PLATE 75. 

 Avea Island (600 feet). Vanua Mbalavu Lagoon. Elevated limestone. 



PLATE 76. 

 Alcyonarian Flat, Ngillangillah Island. 



PLATE 77. 



Limestone Bluff north of Tokolau Beach, Kambara, Wangava in the distance. 



PLATE 78. 



Volcanic Hill south of Tokolau, Kambara. The elevated limestone extends to the 

 valley on left of hill. The negro-heads and shore platform underlying the 

 limestone are volcanic. 



PLATE 79. 



Elevated Limestone Cliffs, Northwest Shore of Kambara. Neither fringing nor 

 barrier reefs along this part of the coast. 



PLATE 80. 



Southeast Side of Fulanga. High hills in the southeast corner; shore line of low 

 limestone hills in the foreground, seen from outside of barrier reef. 



