REPORT ON THE ECHINOIDEA—MORTENSEN 43 
Remarks.—In spite of being in poor condition, with the apical 
system lost, this test proves itself, by its characteristic red mottled 
color as well as by its test structure, definitely to belong to the present 
species, which, like the species versicolor, belongs to the genus Desme- 
chinus, as will be set forth in vol. 8, pt. 2, of my Monograph of the 
Echinoidea. 
Genus SALMACIS L. Agassiz 
SALMACIS BICOLOR L. Agassiz 
Salmacis bicolor, var. rarispina MortENSEN, The Danish Expedition to Siam 
1899-1900, II. Echinoidea [Danske Selsk. Skr., ser. 7, vol. 1, No. 1], p. 65, 
pl. 6, figs. 2, 4, 23, 26, 39, 40; pl. 7, fig. 1, 1904. 
Salmacis bicolor H. L. Cuark, Catalogue of the recent Sea-urchins in the British 
Museum, p. 84, 1925. 
Localities -—Station 5137; in the vicinity of Jolo (Sulu) ; Jolo Light 
bearing S. 61° E., 18 miles distant (lat. 6°04’25’" N., long. 
120°58’30’’ EK.) ; 36 meters; sand and shells; February 14, 1908. One 
specimen. 
Station 5174; in the vicinity of Jolo; Jolo Light bearing E. 2.6 
miles distant (lat. 6°03’45’" N., long. 120°57’00’’ KE.); 36 meters; 
coarse sand; March 5, 1908. One specimen. 
Station 5149; in the vicinity of Siasi; Sirun Island (W.) bearing 
N. 39° E., 2.4 miles distant (lat. 5°33’00’’ N., long. 120°42’10’" E.) ; 
18 meters; coral and shells; February 18, 1908. One large and one 
small specimen. 
Station 5151; Tawi Tawi group, Jolo Archipelago; Sirun Island 
(C.) bearing N. 58° E.,; 19.8. miles distant. (lat. 5°24’40’ N., 
Jong. 120°27'15’’ E..) ; 44 meters; coral sand and shells; February 18, 
1908. One large broken specimen. 
Station 5442; west coast of Luzon; San Fernando Point Light bear- 
ing N. 39° E., 8.4 miles distant (lat. 16°30’36’’ N., long. 120°11’06’ 
E.) ; 82 meters; coral sand; May 10, 1909. Three specimens, two 
large and one small. 
Station 5482; in the vicinity of Surigao Strait; Cabugan Grande 
Island (N.) bearing N. 87° W., 4.5 miles distant (lat. 10°27’30” N., 
long. 125°18’00’’ E.); 122 meters; broken shells, sand, and green 
mud; July 30, 1909. Three specimens. 
Station 5555; in the vicinity of Jolo; Cabalian Point, Jolo, bearing 
N. 50° W., 3.8 miles distant (lat. 5°51’15’’ N., long 120°58’35”" E.) ; 
62 meters; coarse sand; September 18, 1909. One small specimen. 
Station 5557; in the vicinity of Jolo; Cabalian Point, Jolo, bearing 
N. 70° W., 5.2 miles distant (lat. 5°51’30’’ N., long. 121°01’00”’ E.) ; 
' 24 meters; sand and coral; September 18, 1909. One small fine 
specimen, 
