352 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



Since individuals with more than 10 arms are exchisively of the slender-armed type, 

 they naturally are commonest in the Java Sea. Here specimens with more than 

 10 arms, usually 11, are not uncommon, while on the northern coast of Java and at 

 Singapore the number of arms may rise as high as 17. Except in the Java Sea 

 an increase in the number of arms over 10 is very rare; a single individual with 12 

 arms is recorded from Jolo, in the Philippines, and one with 11 arms is recorded from 

 Holothuria Bank, in northwestern Australia. 



On the northwestern coast of Java individuals of enormous size, larger than the 

 usual run of C. Solaris, are found. 



If it is considered desirable to recognize the major varieties of this species 

 nomenclatorially, the following names are available: 



The stout-armed form is typical pectinata Linn6, as is evident from Retzius' 

 redescription of the Linnean type specimen. 



The slender-armed form must be knowTi as cumingii J. Miiller. 



The multibrachiate form must bear the name affinis Ltitken. 



The giant form must be known as hamata Kuhl and van Hasselt. 



Localities. — China Sea [Hartlaub, 1891]. 



Albatross station 5276; China Sea, in the vicinity of southern Luzon; Malavatuan 

 Island (NW.) bearing N. 61° 30' E., 6.5 miles distant (lat. 13° 49' 15" N., long. 120° 

 14' 45" E.); 32.9 meters; shells, pebbles, and sand; July 17, 1908 [A. H. Clark, 1911]. 



Sorsogan, southern Luzon, Philippines (2, M. C. Z., 659). 



Nea/ Bohol, Philippines; Prof. C. Semper [von Graff, 1877, 1884; P. H. Car- 

 penter, 1882, 1888]. 



Challenger; Samboanga, Mindanao, Philippines; 18.2 meters [P. H. Carpenter, 

 1888; A. H. Clark, 1913] (2, B. M.). 



Siboga station 99; anchorage off North Ubian (lat. 6° 07' 30" N., long. 120° 

 26' 00" E.); 16-23 meters; lithothamnion bottom; June 28-30, 1899 [A. H. Clark, 

 1918] (12, Amsterdam Mus.). 



Albatross station 5138; in the vicinity of Jolo (Sulu); Jolo Light bearing S. 19° 

 E., 2.5 miles distant Qat. 6° 06' 00" N., long. 120° 58' 50" E.); 34.7 meters; sand 

 and coral'; February 14, 1908 (1, U.S.N.M., 34919). 



Albatross station 5142; in the vicinity of Jolo; Jolo Light bearing S. 50° W., 3.9 

 miles distant (lat. 6° 06' 10" N., long. 121° 02' 40" E.); 38.3 meters; coral sand and 

 shells; February 15, 1908 [A. H. Clark, 1908] (3, U.S.N.M., 34924, 34925). PI. 20, 

 fig. 49; pi. 33, fig. 100. 



Albatross station 5139; in the vicinity of Jolo; Jolo Light bearing S. 51° W., 3.6 

 miles distant (lat. 6° 06' 00" N., long. 121° 02' 30" E.); 36.5 meters; coral sand; 

 February 14, 1908 [A. H. Clark, 1908] (1, U.S.N.M., 34921). 



Albatross station 5137; in the vicinity of Jolo; Jolo Light bearing S. 61° E., 1.3 

 miles distant (lat. 6° 04' 25" N., long. 120° 58' 30" E.); 36.5 meters; sand and shells; 

 February 14, 1908 [A. H. Clark, 1908]. 



Dr. Th. Mortensen's Pacific expedition, 1914-1916; off Jolo; about 22 meters; 

 sand and coral; March 17, 1914 (3); about 36 meters; hthothamnion; March 17, 

 1914 (5); about 36 meters; March 21, 1914 (6); about 36-55 meters; sand and coral; 

 March 19, 1914 (3). 



