A MONOGRAPH OF THE EXISTING CRINOIDS 253 



In a third paper on the crinoids collected by the Albatross in the Philippines, which 

 was published in 1911, I recorded a small specimen of Craspedometra anceps from 

 station 5355 and added a note to the effect that an examination of the Challenger 

 types in London had shown that Carpenter's Antedon clemens is the same thing as his 

 Antedon anceps and as my Craspedometra aliena. 



In my memoir on the crinoids of the Indian Ocean published in 1912, I included 

 Craspedometra anceps, with Antedon clemens and Craspedometra aliena as synonyms. 

 I said that an examination of the Challenger material in London had shown me that 

 my Craspedometra aliena is merely a very large form of the species that Carpenter 

 called anceps and, furthermore, that Carpenter's clemens is also the same thing as his 

 anceps. I remarked that the earlier pinnules of this species sometimes have the 

 curious production of the distal corners of the segments which Carpenter described in 

 Amphimetra variipinna ( = Heterometra crenulata) and in Oligometra serripinna. This 

 statement was the result of the confusion arising from the inclusion of specimens of 

 both Heterometra crenulata and H. quinduplicava under Craspedometra aliena. Farther 

 on I gave Heterometra quinduplicava, with its synonymy and range. In an appendix 

 I recorded a specimen of Craspedometra anceps from the Andaman Islands. 



In a paper on the comatulids in the British Museum published in 1913, 1 included 

 Amphimetra anceps, with Antedon clemens as a synonym, and also Heterometra quin- 

 duplicava. 



In my memoir on the unstalked crinoids collected by the Siboga, published in 

 1918, I placed Antedon clemens and A. anceps in the synonymy of Heterometra quin- 

 duplicava, of which I recorded a specimen from station 99. On the basis of the type 

 specimen Craspedometra aliena was placed in the synonymy of Heterometra crenulata. 



In 1933 I recorded a specimen in the Buitenzorg Museum from north of central 

 Java. 



HETEBOMETEA CRENULATA (P. H. Carpenter) 



Plate 23, Figures 89-92; Plate 24, Figures 93-96; Plate 25, Figure 101; Plate 26, Figures 



102, 103 



[See also vol. 1, pt. 2, figs. 445, 446 (pinnule tip), p. 261; fig. 718 (disk), p. 346.] 



IComatula dubia von Graff, Das Genus Myzosloma, 1877, pp. 15, 22, 72, 79 (Semper, MS.; near 

 Bohol, Philippines; myzostomes; nomen nudum). — Braun, Centralbl. fvir Bakteriol. und 

 Parasitenk., vol. 3, 1888, p. 185 (myzostomes; after von Graff). — A. H. Clark, Unstalked 

 crinoids of the Sibo<;a-Exped., 1918, p. 77, footnote e (identity). 



Antedon crenulata P. H. Carpenter, Journ. Linn. Soc. (Zool.), vol. 16, 1882, p. 507 (description; 

 neighborhood of Borneo; discussion); Proc. Zool. Soc. London, 1882 (1883), p. 746 (specific 

 formula).— A. H. Clark, Smithsonian Misc. Coll., vol. 60, No. 10, 1912, p. 2 (identity).— 

 Gislen, Kungl. Svenska Vet.-Akad. Handl., vol. 59, No. 4, 1919, p. 25. 



Antedon decipiens Bell, Proc. Zool. Soc. London, 1882, p. 534 (specific formula). — P. H. Carpenter, 

 Proc. Zool. Soc. London, 1882 (1883), pp. 740 ff. (discussion of Bell's method of formulation 

 and corrected formulae). — Bell, Report Zool. Coll. H. M. S. Alert, 1884, p. 155 (specific for- 

 mula), p. 159 (description; Arafura Sea, 32-36 fms.; Dundas Strait; Prince of Wales Channel; 

 station 144 [probably Thursday Island]), p. 162 (comparison with A. irregularis), pi. 11, figs. B, 

 Ba. — A. H. Clark, Mem. Australian Mus., vol. 4, 1911, p. 714 (identity); Crinoids of the 

 Indian Ocean, 1912, p. 31 (identity). — Gislen, Kungl. Svenska Vet.-Akad. Handl., vol. 59, 

 No. 4, 1919, p. 25.— H. L. Clark, The echinoderm fauna of Torres Strait, 1921, p. 6 (identity). 



Antedon irregularis Bell, Proc. Zool. Soc. London, 1882, p. 534 (specific formula). — P. H. Car- 

 penter, Proc. Zool. Soc. London, 1882 (1883), pp. 740 ff. (discussion of Bell's method of formu- 

 lation and corrected formula). — Bell, Report Zool. Coll. H. M. S. Alert, 1884, p. 155 (specific 



