300 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Station 5283; China Sea, in the vicinity of southern Luzon; Mala- 

 vatuan Island (N.) bearing N. 64° W., 8.75 miles distant (lat. 13° 

 48' 30" N., long. 120° 28' 40" E.) ; 512 meters; bottom temperature 

 8.22° C; dark gray sand; July 18, 1908 (1 specimen, Cat. Nos. 

 E. 1349, E. 1350, U.S.N. M.). 



Station 5325; off northern Luzon; Hermanos Island (N.) bearing 

 N. 86° E., 16.75 miles distant (lat. 18° 34' 15" N., long. 121° 51' 15" 

 E.) ; 409 meters; bottom temperature 11.78° C; green mud; Novem- 

 ber 12, 1908 (4 specimens, Cat. No. E. 1347, U.S.N. M.). 



Station 5326; off northern Luzon; Hermanos Island (N.) bearing 

 N. 69° E., 8 miles distant (lat, 18° 32' 30" N., long. 122° 01' 00" 

 E.); 420 meters; bottom temperature 13.00° C; mud; November 12, 

 1908 (1 specimen, Cat. No. E. 1348, U.S.N.M.). , 



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 (1 specimen, 

 Cat. Nos. E. 1301, E. 1302, U.S.N.M.). 



Station 5459; east coast of Luzon; Legaspi Light bearing S. 88° 

 W., 14.3 miles distant (lat. 13° 10' 21" N., long. 123° 59' 54" E.) ; 

 367 meters; June 8, 1909 (2 specimens, Cat. No. E. 1288, U.S.N.M.). 



Station 5527; between Bohol and Siquijor; Balicasag Island (C.) 

 bearing N. 14° W., 8.2 miles distant (lat. 9° 22' 30" N., long. 123° 

 42' 40" E.); 716 meters; bottom temperature 11.83° C; globigerina 

 ooze; August 11, 1909 (1 specimen, Cat. No. E. 1304, U.S.N.M.). 



. Remarks. — The identification of these specimens with Stereocidaris 

 grandis I must regard as provisional, as I have a suspicion that some 

 confusion has taken place with regard to that species and S. micro- 

 tuberculata ( Yoshiwara) ; the latter would rather seem to be the true 

 S. grandis, while the form here called S. grandis, so far as I can judge, 

 in conformity with H. L. Clark and de Meijere, should probably re- 

 ceive a new name. The question can not, however, be settled until 

 after a renewed examination of the type material. It may only be 

 pointed out on this occasion that the main character distinguishing 

 grandis from microtuberculata, according to Clark 12 the width of the 

 ambulacra, namely, 25 to 33 per cent of the interambulacra in grandis 

 and only 18 to 25 per cent in microtuberculata, does not hold very well. 

 From the measurements given by Doderlein 13 it is seen that in his 

 original specimens of S. grandis the ambulacra are only 23 to .28 per 

 cent of the interambulacra. A careful comparison of a specimen 

 identified by H. L. Clark as microtuberculata with Doderlein's descrip- 

 tion and figures of his S. grandis seems to me to leave but very little 

 doubt that they are identical. 



12 The Cidaridae, p. 218. a Jap. Seeigel, p. 49. 



