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PACIFIC SCIENCE, Vol VIII, July, 1954 
Family DIADEMATIDAE 
Genus Diadema Gray 
Diadema paucispinum A. Agassiz 
Diadema paucispinum A, Agassiz, Mus. Corn- 
par. ZooL, BuL 1: 19, 1863 (Sandwich 
[Hawaiian] Islands). 
LOCALITIES: Gilbert Islands, Onotoa Atoll, 
G. O.C.-24 (1 specimen); G.O.C-30 (1 spec- 
imen); G.O.C.-36 (1 specimen). 
Diadema setosom (Leske) 
Echinometra setosa Leske, Additamenta ad 
Jacobi Theodori Klein, 1778, p. 36. 
locality: Saudi Arabia, !4 mile north of 
West Pier, Ras Tanura, Donald S. Erdman, 
June 23, 1948. 
NOTES: In his account of the echinoderms 
of the Iranian Gulf (Danish Scientific Inves- 
tigations in Iran, part 2: 59, 1940) Dr. Th. 
Mortensen says: ” Above all it is unbelievable 
that Diadema should not occur there, seeing 
that it occurs as far north as the Gulf of 
Suez in the Red Sea.’’ In his notes on the 
echinoderms of Tarut Bay and vicinity, Saudi 
Arabia, Richard LeBaron Bowen wrote (A. 
H. Clark, 1949, Amer. Mus. Novitates No. 
1390: 11, 13, 14) that on May 25, 1945, he 
found Diadema in Tarut Bay, and in one 
locality it was predominant and common. 
Later when he visited the locality to collect 
specimens, it had totally disappeared. In 1948 
Mr. Erdman collected a specimen in the same 
general region and brought it to Washington. 
This specimen was mentioned as Diadema 
setosum, but without data of occurrence, in 
1950 (Report on the Progress and Condition 
of the United States National Museum for 
the year ending June 30, 1949, p. 29). 
Genus Echinothrix Peters 
Echinothrix diadema (Linne) 
Echinus diadema Linne, Systema naturae, ed. 
10, vol. 1, p. 664, No. 7, 1758 (Indian Sea). 
localities: Gilbert Islands, Onotoa Atoll, 
G.O.C.-24 (2 small specimens, one with a 
parasitic gastropod). 
Marshall Islands, Ailuk Atoll, leeward reef 
just west of Ailuk Island, seaward side, F. S. 
MacNeil, 1951-52 (2 specimens), 
Tuamotus, Morrison, 1842 (4 specimens); 
2238 (1 specimen). 
Guam, Oca Point, David H. Johnson, 
May, 1945 (1 specimen); D. G. Frey, Novem- 
ber, 1945 (3 specimens). 
Saipan, Unai Taloforo, P. E. Cloud, Jr., 
June 12, 1949 (1 specimen), 
Echinothrix calamaris (Pallas) 
Echinus calamaris Pallas, Spicilegia zoologica 
. . . vol. 1, fasc. 10, p. 31, pL 2, figs. 4-8, 
1774 (East Indies). 
LOCALITY: Solomon Islands, Bougainville 
Island, U, S. Navy, 1944 (1 specimen). 
Family TEMNOPLEURIDAE 
Genus Mespilia Desor 
Mespilia globulus (Linne) 
Echinus globulus Linne, Systema naturae, ed. 
10, vol. 1, p. 664, No. 2, 1758 (Indian 
Ocean) . 
locality: New Caledonia (6 bare tests). 
Family TOXOPNEUSTIDAE 
Genus Tripneustes L. Agassiz 
Tripneustes gratilla (Linne) 
Echinus gratilla Linne, Systema naturae, ed. 
10, vol. 1, p. 664, No. 4, 1758 (Indian 
Ocean) . 
localities: Gilbert Islands, Onotoa Atoll, 
reef near Abenecne, at a depth of 2 feet. 
Banner, October 7, 1951 (collected by Stras- 
burg) (1 specimen). 
Tuamotus, Morrison, 1889 (1 specimen); 
1921 (1 specimen); 2175 (1 specimen). 
Palmyra Island, Dr. W. H. Jones, U. S. 
