260 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



liensis, ser. 4, vol. 5, No. 6, 1922, pp. 9, 90. A. H. CLARK, The Danish Ingolf-Exped., vol. 4, 

 No. 5, Crinoidea, 1923, p. 39. GISLEN, Zool. Bidrag Uppsala, vol. 9, 1924, pp. 35, 42, 78, 84, 

 90, 99, 231, 235, 280, 287; Vid. Medd. Dansk Naturh. Foren. K0benhavn, vol. 83, 1927, p. 30; 

 Ark. Zool., vol. 19, No. 32, 1928, p. 6. MORTENSEN and LIKBBRKIND, Die Tierwelt der Nord- 

 und Ostsee, Lief. 12, 1928, pp. viii, 87 (occurrence of ambulacral groove). A. H. CLARK, Journ. 

 Linn. Soc. (Zool.), vol. 36, No. 249, 1929, p. 646; Rec. Indian Mus., vol. 34, pt. 4, 1932, p. 

 560. H. L. CLARK, Scientific Survey of Porto Rico and the Virgin Islands, vol. 16, part 1, 

 1933, p. 11. GISLEN, Kungl. Fysiogr. Sallsk. Handl., new ser., vol. 45, No. 11, 1934, p. 18. 

 A. H. CLARK, John Murray Exped. 1933-34, Sci. Reports, vol. 4, No. 4, 1936, pp. 90, 101, 103. 

 MORTENSEN, Kongel. Vid. Selsk. Skrifter, nat. math., ser. 9, vol. 7, No. 1, 1937, p. 63 (larvae 

 compared with those of Lamprometra klunzingeri) . GISLEN, Kilhgl. Svenska Vet.-Akad. 

 Handl., ser. 3, vol. 17, No. 2, 1938, pp. 4, 16. VANET and JOHN, Trans. Roy. Soc. Edinburgh 

 vol. 59, pt. 3, No. 24, 1939, p. 664 (St. Helena; notes). H. L. CLARK, Echinoderm fauna of 

 Australia, 1946, p. 23 (in key), p. 53. 



Thopimetridae A. H. CLARK, Amer. Nat., vol. 42, No. 503, 1908, p. 725 (typographical error; color). 



Tropiometres A. H. CLARK, Bull. Mus. Hist. Nat., Paris, No. 4, 1911, p. 255 (includes Tropiometra 

 only). 



Tripiometridae ALEXANDER, Rec. Western Australian Mus., vol. 1, pt. 3, 1914, p. 108. 



Diagnosis. A family of the superfamUy Tropiometrida in which the ventral 

 perisome of the pinnules is not protected by conspicuous side- and covering-plates, 

 and the cirri are stout, without dorsal processes. The included species have normally 

 10 arms only. 



Range. The geographical and bathymetrical ranges of this family are given 

 under the single included genus Tropiometra (see page 261). 



Genus TROPIOMETRA A. H. Clark 



Alecto (part) LEACH, Zool. Misc., vol. 2, 1815, p. 63, and following authors. 



Comatula (part) LAMARCK, Histoire naturelle des animaux sans vertebres, vol. 2, 1816, p. 535, and 

 following authors. 



Comatula (Alecto) (part) J. MULLER, Abh. preuss. Akad. Wiss., 1847, 1849, p. 252. 



Antedon (part) P. H. CARPENTER, Trans. Linn. Soc. (Zool.), ser. 2, vol. 2, 1879, p. 29, and following 

 authors. 



Actinometra (part) SPRINGER, Mem. Mus. Comp. Zool., vol. 25, No. 1, 1901, p. 51 (compared with 

 Uintacrinus) . A. H. CLARK, Proc. U. S. Nat. Mus., vol. 43, 1912, p. 403 (Berl. Mus., MS.). 



Tropiometra A. H. CLARK, Smithsonian Misc. Coll., vol. 50, pt. 3, 1907, p. 349 (diagnosis; genotype, 

 Comatula carinata Lamarck, 1816); Bull. Mus. Comp. Zool., vol. 51, No. 8, 1908, p. 246 (same); 

 Proc. Biol. Soc. Washington, vol. 21, 1908, p. 135 (referred to the Tropiometridae) ; Proc. U. S. 

 Nat. Mus., vol. 34, 1908, p. 211 (referred to the Tropiometridae), p. 212 (occurs in the West 

 Indies and Japan), p. 275 (enlargement of the elements of the IBr series and first 2 brachials); 

 vol. 35, 1908, p. 120 (arm structure; enlargement of the first 2 brachials); Amer. Nat., vol. 42, 

 No. 503, 1908, p. 723 (range; habitat); Geogr. Journ., vol. 32, No. 6, 1908, p. 602 (faunal char- 

 acters); Proc. U. S. Nat. Mus., vol. 36, 1909, p. 365 (absence of side- and covering-plates); 

 Vid. Medd. Naturh. Foren. K0benhavn, 1909, p. 193 (probably occurs at Singapore, though 

 not yet discovered there); Proc. U. S. Nat. Mus., vol. 38, 1910, p. 213 (larvae possibly plutei, 

 because of the wide distribution of the species); Bull. Mus. Hist. Nat., Paris, 1911, No. 4, 

 p. 255 (division series and arm bases compared with those of Oligomelra adeonae); Mem. 

 Australian Mus., vol. 4, 1911, p. 728 (family Tropiometridae restricted to cover this genus 

 only), p. 731 (in key), p. 735 (key to the Australian species), p. 779 (original reference; char- 

 acters; range); Crinoids of the Indian Ocean, 1912, p. 11 (large species absent from the west 

 coast of the Malay Peninsula, from the Andamans, and from farther west; represented in the 

 Ceylon region), p. 12 (represented in the Red Sea and southeast African regions), p. 23 (dis- 

 tribution in detail) , p. 42 (only genus in Tropiometridae as revised) , p. 58 (only genus in the 

 family), p. 176 (original reference; type); Internat. Rev. gesamt. Hydrobiol. und Hydrogr., 

 1914, p. 4 and following (range); Beitrage zur Kenntnis der Meeresfauna Westafrikas, Echinod. 



