688 BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



The genital pinnules extend to P 9 or P[ , which have small gonads on the fourth 

 and fifth segments. P 9 is of 14 segments and 6 mm. long. The first two segments are 

 short; the remainder are regular, cylindrical and elongated; the third segment is more 

 than twice, the distal segments more than four tunes, as long as broad. The whole 

 pinnule tapers evenly to a fine point. Few distal pinnules remain. They are of 

 about 16 segments and 8 mm. in length, generally similar to P 9 . 



Sacculi, somewhat irregularly arranged, are abundant on the arms and pinnules, 

 including the oral pinnules. 



Two pinnules were examined by Dr. John for the presence of an ambulacral 

 skeleton. Reduced side plates, one or two to a segment, are present along a part of 

 one pinnule, absent from the other. They are in the form of curved or straight rods, 

 with the distal end bifurcated. There are numerous spicules of diverse shapes and 

 sizes in the tentacles of both specimens. 



Remarks [by A.M.C.]. I have removed this species from the genus Florometra as 

 the very elongated segments of the oral pinnules could not be reconciled with the 

 diagnosis of the subfamily Heliometrinae. It might have been supposed that the 

 arrangement of the cirrus sockets in vertical rows (even though these are not perfectly 

 regular) would indicate a position in the subfamily Zenometrinae, more particularly 

 perhaps near the southern genus Eumorphometra. However, no species of Eumorpho- 

 metra has oral pinnules with more than 13 segments and spirmlifera has a much greater 

 resemblance to Tonrometra remota. Except for the slightly more numerous and rela- 

 tively longer cirrus segments in spinulijera, the differences between them are slight. 



Locality. B.A.N.Z.A.R.E. station 29; off Princess Elizabeth Land (lat. 6628' 

 S., long. 7241' E.); 1266 meters; December 25, 1929 [John, 1939] (1, B.M.). 



TONROMETRA REMOTA (P. H. Carpenter) 

 FIGURE 41 



Antedon remota P. H. CARPENTER, Quart. Journ. Micr. Sci., new ser., vol. 27, 1887, p. 386 (nomen 

 nudum; sacculi largely developed); Challenger Reports, Zoology, vol. 26, pt. 60, 1888, p. 184 

 (description), pi. 29, figs. 5-9. BATESON, Materials for the study of variation, 1894, p. 421 

 (specimen with only 2 radials on one ray). SHIPLEY, Antarctic manual, 1901, ch. 18, p. 269. 

 DODERLEIN, Fauna Arctica, vol. 4, Lief. 2, 1905, p. 405 (antarctic representative of the Tenella 

 group). A. H. CLARK, Smithsonian Misc. Coll., vol. 50, pt. 3, 1907, p. 353 (listed). HAMANN, 

 Bronn's Klassen und Ordnungen des Tier-Reichs, vol. 2, Abt. 3, 1907, p. 1579 (listed). A. 

 H. CLARK, Crinoids of the Indian Ocean, 1912, p. 33 (of P. H. Carpenter, 1888= Thaumatometra 

 remota) . 



Thaumatometra remota A. H. CLARK, Proc. Biol. Soc. Washington, vol. 21, 1908, p. 128 (listed); 

 Crinoids of the Indian Ocean, 1912, p. 33 (=Antedon remota P. H. Carpenter, 1888), p. 245 

 (synonymy; locality); Smithsonian Misc. Coll., vol. 61, No. 15, 1913, p. 66 (published references 

 to specimens in the B. M.; Challenger sta. 174). TORTONESE, Natura, Milano, vol. 24, 1933, 

 p. 164. 



Trichometra remota A. H. CLARK, Notes Leyden Mus., vol. 34, 1912, p. 147 (compared with T. brevi- 

 pes); Journ. Washington Acad. Sci., vol. 5, 1915, No. 3, p. 81 (antarctic; range); Die Crinolden 

 der Antarktis, 1915, p. 105 (collected by the Challenger; recorded as Antedon remota), p. 107 

 (in key to antarctic comatulids), p. 145 (synonymy; locality; comparison with T. brevipes), p. 170 

 (a deep water antarctic species; antarctic region south of the Indian Ocean), p. 171 (systematic 

 and geographical relationships). 



Tonrometra remota A. H. CLARK, Journ. Washington Acad. Sci., vol. 7, 1917, No. 5, p. 130 (listed); 

 Unstalked crinoids of the Siboj/a-Exped., 1918, p. 258 (in key; range), p. 259 (references); Journ. 

 Linn. Soc. (Zool.), vol. 36, No. 249, 1929, p. 664 (compared with T. multicirra). JOHN, in Vaney 

 and John, Sci. Res. Voy. Scotia, 1902-04, Crinoidea, 1939, p. 670 (Scotia station; description), 



