R.Clapp 1964 Oct. 11 Sibylla Island, Taongi Atoll Spent the morning exploring the southern end of Sibylla Islet and the next islet to the south. Stopped and did not go onto the final islet which was barren of vegetation as we had to be back for a radio check at 3:00. The second islet, the one below Sibylla, was quite barren. Only Red-tailed Tropicbirds were nesting on it under the Scaevola. A fairy tern nest was seen about 4 feet up on the horizontal branch of a Messerschmidtia. Molluscs were uncommon in the sea wrack but two kinds of killer clam shells were seen on the lagoon side of the island. One was the sort seen in the Phoenix Islands. Several small cones similar to Hebrew cones were found in the sea wrack and a larger form was found in front of camp.