A MONOGRAPH OF THE EXISTING CRINOIDS 415 



description, except that P 3 is nearly as long as P 2 , and P 4 is as he describes P 3 . The 

 division series have slight lateral projections. 



The specimen from off Colombo Lighthouse has 21 arms 50 mm. long. It agrees 

 well with Hartlaub's description, and also with the specimen from Singapore just 

 mentioned. P! has 12 segments. 



Localities.— Albatross station 5174; in the vicinity of Jolo (Sulu), Philippines; 

 Jolo light bearing E., 2.6 miles distant (lat. 6°03'45" N., long. 120°57'00" E.); 36 

 meters; coarse sand; March 5, 1908 [A. H. Clark, 1909, 1912, 1918] (1, U.S.N.M., 

 35256). 



Matupi, New Britain; Dr. O. Finsch [Hartlaub, 1890, 1891; A. H. Clark, 1907, 

 1909, 1912, 1918] (1, Berl M., 5374). 



Singapore; Svend Gad [A. H. Clark, 1909, 1912, 1918] (1, CM.). 



Investigator station 152 ; 11.5 miles S. 83° W. of Colombo Light, Ceylon; 48 meters; 

 sand, shells, and coral; December 12, 1893 [A. H. Clark, 1912; H. L. Clark, 1915] 

 (1, I.M.). 



Geographical range. — From the Philippine Islands to New Britain and westward 

 to Ceylon. 



Bathymetrical range. — -From the shoreline down to 48 meters. 



History. — This species was first described by Dr. Clemens Hartlaub in 1890 under 

 the name of Antedon tenuipinna from a specimen in the Berlin Museum collected at 

 Matupi, New Britain, by Dr. Otto Finsch. It was redescribed by him and figured 

 in 1891. 



In 1907 I placed it in my new genus Himerometra, transferring it in 1909 to the 

 new genus Stephanometra. 



In 1909 I recorded another specimen from Albatross station 5174 in the Philip- 

 pines, and later in the same year I recorded a third from Singapore collected by 

 Svend Gad, the Danish consul at that port. The fourth specimen, dredged by the 

 Investigator off Colombo, Ceylon, was recorded in 1912. 



In 1912 I mentioned having examined the type specimen in the Berlin Museum, 

 and in 1915 Dr. Hubert Lyman Clark included the species in his list of the echinoderms 

 of Ceylon, other than holothurians, on the strength of the Investigator specimen from 

 off Colombo. 



STEPHANOMETRA SPINIPINNA (Hartlaub) 



Antedon spinipinna Hartlaub, Nachr. Ges. Gottingen, May 1890, p. 179 (description; Amboina); 

 Nova Acta Acad. German., vol. 58, No. 1, 1891, p. 11 (collected by Brock at Amboina), p. 39 

 (in key), p. 58 (in second section of species of Palmata group with spiny lower pinnules), p. 61 

 (Amboina; detailed description and comparisons), p. 113 (in Gottingen Mus.), pi. 4, figs. 42, 

 44. — Hamann, Bronns Klassen und Ordnungen des Tier-Reichs, vol. 2, Abt. 3, 1907, p. 1581 

 (listed). — A. H. Clark, Crinoids of the Indian Ocean, 1912, p. 37 (identity). 



Himerometra spinipinna A. H. Clark, Smithsonian Misc. Coll., vol. 50, 1907, p. 356 (listed). 



Stephanometra spinipinna A. H. Clark, Proc. Biol. Soc. Washington, vol. 22, 1909, p. 10 (listed); 

 Crinoids of the Indian Ocean, 1912, p. 37 (identity), p. 132 (synonymy; Amboina); Unstalked 

 crinoids of the Siboga-Exped., 1918, p. 93 (in key; range), p. 95 (references; notes; stations 81, 

 89), p. 272 (listed).— Gisl^n, Kungl. Fysiogr. Sallsk. Handl., new ser., vol. 45, No. 11, 1934, 

 p. 20. 



