REPORT ON THE ECHINOIDEA—MORTENSEN Qh 
COELOPLEURUS MAILLARDI (Michelin) 
Keraiophorus maillardi MicuHerin, Echinides et stellérides, in Maillard, Notes 
sur l’ile de la Réunion, Annexe A, p. 2, pl. 14, 1862. 
Coelopleurus maillardi A. AcAssiz and H. L. Ciarx, Hawaiian and other Pacific 
Echini, Salenidae, ete., p. 84, pl. 49, fig. 34; pl. 53, figs. 8, 9, 1908 —-MorrTENSEN, 
Monograph of the Echinoidea, vol. 2, p. 627, pl. 67, fig. 3; pl. 68, fig. 4; pl. 69, 
figs. 1-3; pl. 88, figs. 22, 28, 1935. 
Localities Station 5108; China Sea, off southern Luzon; Corregi- 
dor Light bearing N. 39° E., 22.5 miles distant (lat. 14°05’05”’ N., long. 
120°19’45”’ E.) ; 23 meters; coral; January 15, 1908. One specimen. 
Station 5413; between Cebu and Bohol; Lauis Point Light bearing 
N. 68° W., 10 miles distant (lat. 10°10’35’’ N., long 124°03’15’’ E.) ; 
77 meters; March 24, 1909. One specimen. 
Station 5483; between Samar and Leyte, in the vicinity of Surigao 
Strait; Cabugan Grande Island (N.) bearing N. 88° W., 5.7 miles dis- 
tant (lat. 10° 27’ 30’’ N., long. 125°19’15’’ E.) ; 185 meters; sand and 
broken shells; July 30, 1909. Three specimens. 
Remarks.—All the specimens are young and not very well preserved. 
COELOPLEURUS LONGICOLLIS A. Agassiz and H. L. Clark 
Coelopleurus maillardi (in part) A. AcAssiz, Challenger Reports, Zoology, vol. 3, 
pt. 9, Echinoidea, p. 61, pl. 5; pl. 6; pl. 45, figs. 1-6, 1881. 
Coelopleurus longicollis A. AGASsIz and H. L. CLARK, Hawaiian and other Pacific 
Echini, Salenidae, ete., p. 89, pl. 49, figs. 29-30; pl. 53, fig. 10, 1908.—Morren- 
SEN, Monograph of the Echinoidea, vol. 2, p. 619, pl. 67, figs. 7-9; pl. 88, figs. 
19-21, 1935. 
Locality.—Station 5392; between Samar and Masbate; Tubig Point 
bearing N, 49° E., 5 miles distant (lat. 12°12’35’’ N., long. 124°02’48’’ 
E.) ; 247 meters; green mud and sand; March 13, 1909. One specimen. 
Remarks.—This specimen has been made the subject of a detailed 
description in my Monograph of the Echinoidea, the species having 
never before been duly described, since in the Challenger report it was 
mixed up with C. maculatus (both the species being erroneously iden- 
tified as C. maillardi by Agassiz) , and in the Hawaiian Echini only the 
pedicellariae were described and figured. The A/batross specimen thus 
is of considerable value, forming the base of the description of this 
species. That it is really identical with the C. longicollis of Agassiz 
and Clark would seem beyond doubt, the characteristic ophicephalous 
pedicellariae distinguishing this species from all other species of 
Coelopleurus except C. australis H. L. Clark, which is evidently very 
closely related to C. longicollis. In the absence of sufficient illustra- 
tions of C. australis it is not easy to judge of how close the relationship 
is. If they should ultimately turn out to be identical, it is the name 
longicollis, as the older, that must prevail, so it would not alter the 
name of the A/batross specimen. 
