NO. 6 SMITIISONIAX EXPLORATIONS, I92O 49 



congress and this date was spent in collecting specimens. Dredgings 

 were made in Pearl Harbor, where the commandant placed one of 

 the dredges at their command. They were also rendered the neces- 

 sary assistance in making a search for shipworms. with the resnlt 

 that a new species of Teredo was discovered, which has been named 

 Teredo parksi, in honor of Admiral Parks, in charge of Yards and 

 Docks. U. S. X. They also dredged in ]\Iaunaliia Bay, on the south 

 side of Oahii and in Kaneohe Bay, on the east side of the same island. 

 Specimens were also collected on various occasions at Haleiwa Beach, 

 on the north end of Oahu, and the beach and shallow water adjacent 

 to their cottage at Waikiki were thoroughly scratched over. Trips 

 were also made into various parts of the mountains, where land shells 

 of many kinds were secured. 



Another excursion carried them to the island of ]Maui, where 

 marine shells were collected wherever possible along the shore, and 

 land shells were secured on their ascent of the magnificent extinct 

 volcano of Haleakala. 



One of the very interesting observations made on this trip to the 

 Hawaiian Islands was the finding of an existing marine flora and 

 fauna at a considerable elevation above the level of the sea on the 

 gently sloping bench at the southeast point of Hanouma Bay. This 

 flora and fauna consist of algae, quite a number of species of mollusks, 

 crustaceans, echinoderms and other marine organisms, which occupy 

 pools and puddles kept ever moist and supplied with fresh water by 

 the spray from the breaking surf, which incessantly poimds that 

 shore. Dr. Bartsch considers this an important observation, since the 

 occurrence of fossiliferous laminae bearing marine organisms be- 

 tween sheets of lava has been held to indicate that they were deposited 

 at or below sea level and their occurrence above this has been held as 

 evidence of elevation. We have here an instance which indicates 

 that this is not necessarily the case, for such a lamina would l)e pro- 

 duced if a new outpouring of lava were to cover up the i)1ace 

 mentioned. 



BOTANICAL KXPLOR.'XTIOX IX T.\M.\1C.\ 



In February, 1920, Mr. William R. Maxon, Associate Curator in 

 the Division of Plants, United .*^tates National Museum, and 

 Mr. I'.llsworth P. Killip. aid, were detailed to make botanical col- 

 lections in Jamaica. The expedition was made possible largely 

 through the co-operation of the New "V'ork Botanical (larden, the 

 Gray Herbarium of Harvard University, the h"w](\ .Museum of 

 Xatural Historv, the Universitv of Illinois, the ArnoM Arbdn-tum, 



