HELIOMETRINAE i33 



GG Cirri in lo slightly irregular columns; Pj not more massive 

 than Pgi segments of genital pinnules not expanded. 

 H Elements of division series and brachials with central 

 portion abruptly elevated and prominently spinous; 

 axillaries shorter (broader than long) Eumorphometra concinna. 



HH Elements of division series and brachials not as above; 



axillaries longer (longer than broad) Eumorphometra aurora. 



SYSTEMATIC ACCOUNT 



Family ANTEDONIDAE 



Subfamily HELIOMETRINAE 



Genus Promachocrinus Carpenter 



Promachocrinus kerguelensis Carpenter (Plate III, fig. i) 



Promachocrinus kerguelensis Carpenter, 1888, p. 350, pi. i, figs, i a-d, pi. Ixx; Clark, 1915 a, 

 pp. 128-34, pis. iii-v, and list of earlier references with synonymy; Clark, 191 5 &, many 

 references, fig. 505; Bell, 1917, p. 2; Mortensen, 1918, pp. 18-20, fig. 16; Clark, 1921, numerous 

 references including pp. 530-57, figs. 881-937 (on pentacrinoid young), pi. iv, figs. 1001-2, 

 fig. 807; Mortensen, 1925 b, p. 2; Gislen, 1928, p. 11 ; Grieg, 1929 a, p. 3; 1929 b, p. 3; Clark, 

 1929, p. 662; Bernasconi, 1932 a, pp. 29-35, %s. 1-3, pi. i; 1932 b, pp. 86-7, fig.; John, 1937, 

 p. 9; Clark, 1937, pp. 8-9. 



Promachocrinus vanhoffeniamis Minckert, 1905, pp. 496-501, figs, i and 2. 



Promachocrinus joubini Vaney, 1910, pp. 158-62, figs, i and 2. 



The stations at which it was taken are divided into five groups, according to locality, 



below. 



South Georgia 



St. MS 14. 17. ii. 25. East Cumberland Bay. 190-iiom. Gear DS. Two small specimens. 



St. MS 71. 9.111.26. East Cumberland Bay. 1 10-60 m. Gear BTS. Twenty-eight specimens, 

 mostly large. 



St. MS 74. 17. iii. 26. East Cumberland Bay. 22-40 m. Gear NCS-T. Fragments. 



St. 27. 15. iii. 26. West Cumberland Bay. iiom. Gear DL. Bottom: mud and rock. One 

 specimen; one pentacrinoid larva. 



St. 39. 25. iii. 26. East Cumberland Bay. 179-235 m. Gear OTL. Bottom: grey mud. One 

 specimen. 



St. 42. i.iv. 26. Oflt mouth of Cumberland Bay. 120-204 m. Gear OTL. Bottom: mud. Eight 

 specimens. 



St. 123. i5.xii. 26. Off mouth of Cumberland Bay. 230-250 m. Gear OTL. Bottom: grey mud. 

 One specimen. 



St. 144. 5.1.27. Off mouth of Stromness Harbour. 155-178 m. Gear OTL. Bottom: green 

 mud and sand. Six specimens. 



St. 148. 9. i. 27. Off Cape Saunders. 132-148 m. Gear OTL. Bottom: grey mud and stones. 

 Four specimens. 



St. 149. 10. i. 27. Mouth of East Cumberland Bay. 200-234 m. Gear OTL. Bottom: mud. 

 Five specimens. 



St. 152. 17.1.27. 53° 51' 30" S, 36° 18' 30" W. 245 m. Gear DLH. Bottom: rock. Two 

 specimens. 



