A MONOGRAPH OF THE EXISTING CRINOIDS 505 



that as he had both a young and a mature specimen in which the centrodorsal and the 

 cirri are of the typica form he did not hesitate to refer them to this species, although 

 the number of the arms is smaller and the method of ramification different from the 

 normal typica. 



He added that perhaps it might be possible in this case to suggest a form minor. 



His photograph of the specimen shows what appears to be a typical example of 

 Comantheria rotula. 



Localities. Siboga station 282; anchorage between Nusa Besi and the north- 

 eastern point of Timor (lat. 8 25' 12" S., long. 127 18' 24" E.); 27-54 meters; sand, 

 coral, and lithothamnion ; January 15-17, 1900 [A. H. Clark, 1918] (1, Amsterdam 



Mus.). 



Siboga station 273; anchorage off Pulu Jedan, eastern coast of the Aru Islands; 

 pearl banks; 13 meters; sand and shells; December 23-26, 1899 [A. H. Clark, 1912, 

 1918] (11, U.S.N.M., E. 485; Amsterdam Mus.). PI. 58, fig. 165. 



Mjoberg's station 13; Broome, Western Australia; on the beach at low tide; 

 July 27, 1911 [Gislen, 1919]. 



Port Galera, Mindoro, Philippines; Dr. Laurence E. Griffin (6, M. C. Z.). 



Geographical range. Known from Timor, the Am Islands, northwestern Austra- 

 lia, and the Philippines. 



Bathy metrical range. Littoral and sublittoral; from between tide marks down 

 to 27 (?54) meters. 



History. This species was originally described in 1912 from specimens from 

 Siboga station 273. It was redescribed in greater detail and figured in 1918, when 

 another specimen from Siboga station 282 was recorded. 



In 1919 Dr. Torsten Gislen recorded a comatulid from Mjoberg's station 13 

 which he determined as Comaster typica, but which his figure shows to be this form. 



COMANTHERIA WEBERI A. H. Clark 



Plate 58, Figure 166 



Comantheria weberi A. H. CLARK, Proc. Biol. Soc. Washington, vol. 25, 1912, p. 22 (description; 



Siboga station 49a); vol. 29, 1916, pp. 105, 106 (comparison with C. intermedia); Unstalked 



Crinoids of the Siboga Exped., 1918, p. IX (relationship with C. intermedia); p. 43 (in key; 



range); p. 46 (description; station 49a); p. 271 (listed); pi. 16, fig. 24. 

 Comanthus weberi H. L. CLARK, Biol. Results Fishing Experiments F. I. S. Endeavour, 1909-1914, 



vol. 4, pt. 1, 1916, p. 15 (comparison with C. perplexum). 



Diagnostic features. A rather small species with 40 arms, the IIBr series being 

 4 (3 + 4) and the IIIBr series 2. The centrodorsal is well developed, thick discoidal, 

 and many of the cirri are fully developed and functional, about 20 mm. long and 

 composed of 19-20 segments. The outer cirrus segments bear a proximal tubercle 

 dorsally in addition to the distal serrate transverse ridge, so that the dorsal profile is 

 bidentate in lateral view. 



Description. The centrodorsal is discoidal, moderately thick, with the flat 

 dorsal pole 4 mm. in diameter. 



The cirri are XXXII, 19-20 (usually the latter), about 20 mm. long. The 

 fifth and sixth or sixth and seventh segments are the longest, about half again as 

 9729831 33 



