278 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



brachials is marked even at this early stage, though the brachials following are much 

 elongated. The ("version of the lateral edges of the elements of the IBr series and lower 

 brachials is already apparent. 



Localities. — Albatross station 4177; Hawaiian Islands, off Niihau; Kawaioa Point 

 bearing S. 54° W., 17.5 miles distant; 824-583 meters; bottom temperature 5.00° C; 

 gray sand and globigerinae; August 12, 1902 [A. H. Clark, 1908, 1909, 1912, 1916, 1918] 

 (1, U.S.N.M., 35639). 



Albatross station 4 179; off Niihau ;Kawahioa Point bearing S. 60 °45' W., 19.2 miles 

 distant; 691-779 meters; bottom temperature 5.55° C; coarse sand, rocks, and pebbles; 

 August 12, 1902 [A. H. Clark, 1908, 1909, 1912, 1916, 1918] (5, U.S.N.M., 22688 [type], 

 35638; M. C. Z., 353). 



Albatross station 4180; off Niihau; Kawahioa Point bearing S. 58° W., 19.5 miles 

 distant; 779-762 meters; bottom temperature 5.05° C. ; pebbles, globigerinae, and rocks; 

 August 12, 1902 [A. H. Clark, 1908, 1909, 1912, 1916, 1918] (2, U.S.N.M., 35629). 



Geographical range. — Known only from off Niihau, Hawaiian Islands. 



Bathymetrical range. — Between 583 and 824 meters, but not definitely recorded 

 from either extreme. 



Thermal range.— From 5.00° to 5.55° C. 



History. — This species was described as Charitometra lateralis in 1908 from one of 

 six specimens from Albatross station 4179; at the same time other specimens were 

 recorded from stations 4177 and 4180 and notes were given on them. Charitometra 

 lateralis was said to belong to the same division of the genus as tuberosa from the Philip- 

 pines and lata from Japan, differing from both in its larger size, much longer cirrus 

 segments which are about half again as long as broad instead of about as long as broad, 

 the prominent eversion of the lateral edge of the elements of the IBr series and lower 

 brachials, and the absence of the dorsal carination of the lower part of the arm which is 

 so characteristic a feature of tuberosa. 



In 1909 I transferred lateralis to the new genus Glyptometra, and in 1912 compared 

 it with a new species, G. timorensis. In my memoir on the crinoids of the Indian Ocean 

 published later in 1912 Glyptometra lateralis was listed and the range and synonymy 

 were given. In 1916 I established the genus Calyptometra for this species, and in my 

 report on the unstalked crinoids of the Siboga Expedition published in 1918 I listed 

 Calyptometra lateralis with the synonymy and range. 



GLYPTOMETRA <p. 



Locality.— Off Pratas reef, southeast of Hong Kong (lat. 21°10' N., long. 117°30' 

 E.); 704 meters; Captain Suensson, May 22, 1911 (fragments, C. M.). 



Notes. — Fragments of a specimen of a species of Glyptometra of the G. invenusta 

 type from this locality are in the Copenhagen Museum. One postradial series in situ 

 has one IIBr 4(3 + 4) series and three arms. The IBri are granulated, and the edges 

 of the axillaries all around are finely tubercular. The cirri are 40 mm. long with 

 19-20 segments of which the fourth is about as long as broad, the sixth and seventh 

 are nearly twice as long as broad, and the outermost are half again as long as the 

 proximal width; the distal dorsal edge of the outer segments is slightly thickened. 



