ATLANT. DEEP-SEA EXPED. 1910, VOL. Ill] 



ECHINODERMATA 



43 



taken by the "Voeringen" in the cold area (stat. 96, 66° 

 8' N., 3° E., 1472 m., -+- 1,1°). The bathymetrical 

 distribution is 179 — 1472 m., but its main distribution 

 seems to be between 400 and 1000. m. 



Bri'ssops/s lyrifera Forbes. 

 Brissus lyrifer, Forbes, British Starfishes, 1841, p. 187. 

 10 A. Stat. 3, 49° 32' N., 10° 49' W., 184 m., fine sand, temp. 

 10.3° Cel. Very common. 



5 /5. Stat. 21, 35° 31' N., 6° 35' W., 535 m., yellow sand, temp. 

 11.52° Cel. Two smaller specimens. 



Brissopsis lyrifera is an east Atlantic species ranging 

 north to the banks off Meley ("Voeringen" stat. 147, 

 66° 47' N., 12° 8' E, 260 m.) and south to the Mediter- 

 ranean and the Azores. Its bathymetrical distribution is 

 10 — 535 m. According to Farran J ) it has, however, 

 been taken at depth of 878 — 1299 m. off the west coast 

 of Ireland. 



CRINOIDEA. 



Bathycrinus recuperatus Ed. Perrier (?). 

 Bathycrinus recuperatus Ed. Perrier, Rev. Scient. vol. 35, 1885, 



p. 691. 

 V-o stat. 25 A, 35° 36' N. 8° 23' W., 2300 m., yellow mud. One 

 specimen, in which, however, the crown, the basals, the uppermost 

 portion of the stem and the lowermost part of the roots were wanting. The 

 remaining portion of it was 105 mm. long and consisted of 39 joints. 

 The lowermost joint was 1.64 mm. in length and its breadth was 1.64 

 mm. at the lower and 0.92 mm. at the upper border. The uppermost 

 joint was 2.3 mm. in length and 0.92 mm. in breadth. The joints, 

 with the exception of the lowermost one, are cylindrical and remind 

 one in their form and structure of those in Bathycrinus carpenteri. 

 Among the Bathycrinidae of the Atlantic B. recuperatus seems to 

 be most nearly related to B. carpenteri (cfr. Koehler & Vaney : Note 

 preliminaire sur les Crinoides du "Talisman" et du "Travailleur") 2 ). I have 

 therefore, though doubtfully, referred the specimen under consideration 

 to Perriei's species. 



A mutilated specimen of Bathycrinus recuperatus was 

 found in 1883 by the "Talisman" between Spain and the 

 Azores (44° 20' N. 19° 31' W., 4255 m.). 



Hathrometra dentata Say. 



Alectro dentata Say, Journ. Acad. Nat. Sci. Philadelphia, vol. 5, 1825, 



p. 153. 



3 % stat. 70, 42° 59' N. 51° 15' W., 1100 m„ temp. 3.7° Cel. 

 Four mutilated specimens, one of them clinging to Acanella arbuscula 

 Johns, s. normani Verr. 



This species is found off the east coast of North 

 America, where it is common according to Verrill 3 ) at 



depths of 126 — 1171 m. It seems further to occur off 

 the west coast of Europe, as the "Porcupine" specimen of 

 Antedontenella depicted by Carpenter in the report on the 

 "Challenger" crinoids 1 ) accords perfectly with the specimens 

 from Newfoundland under consideration. The range of 

 Hathrometra dentata can not, however, be definitely 

 determined at the present time, as the species has been 

 confused with H. tenella Retzius and H. sarsii Diiben 

 & Koren. 



Hathrometra prolixa Sladen. 



Antedon prolixa Sladen, Duncan & Sladen: Memoir on the Echi- 



nodermata of the Arctic Sea to the West of Greenland, 1881, p. 77, 



tab. 6, fig.s 7—10. 



9 /s— 10 /s stat. 102, 60° 57' N. 4° 38' W., 1098 m., dark sand and 

 clay, temp, -j- 0.9° Cel. Common. 



Hathrometra prolixa is an Arctic species, ranging in 

 the Norwegian Sea between the Faroe — Shetland Channel 

 (60° 22') and Spitzbergen (80°) and between the east 

 coast of Greenland (about 20° W.) and the Kara Sea 

 (64 52' E.). It is further found off the west coast of 

 Greenland between 63° 24' and 81° 4' N. The bathy- 

 metrical distribution is 46 — 1960 m. Bottom temperature 

 1.1 — ^2.1°. Most of the localities belong to the cold 

 area, and the few warm-water stations included in its 

 range are all situated within the border-region adjacent 

 to the cold area, where the hydrographical conditions 

 may change. The species must therefore be considered a 

 cold-water form. 



Leptometra phalangium J. Miiller. 



Alecto phalangium J. Miiller, Wiegmanns Archiv fur Naturgesch., 



Jahrg. 7, Bd. 1, 1841, p. 142. 



21 /s stat. 39 B, 26° 3' N. 15° W., 267-280 m., fine grey sand. 

 Four smaller specimens. 



Leptometra plalangium is an east Atlantic species, 

 ranging from the Hebrides to Madeira and the Azores. 

 It is further found in the western part of the Medi- 

 terranean. Aust. H. Clark gives in "New Genera of Un- 

 stalked Crinoids" 2 ) its bathymetrical range as 82 to 346m. 

 According to other reports it is 46 — 458 m. Bell 3 ) states 

 that Leptometra phalangium descends to a depth of 

 1281 m. I have, however, not been able to find any 

 autority for this statement. 



') Fisheries, Ireland, Sci. Invest. 1912 no. 6, p. 63. 



2 ) Bull. Mus. Nat. d'Hist. Natur., vol. 16, no. 6, 1910, p. 29. 



:i ) Ann. Rap. Commis. of Fish and Fisheries 1883 (1885), p. 550. 



1 ) Rep. Sci. Res. Voy. Challenger., Zool., vol. 26 

 tab. 31, fig.s 1 & 3. 



2 ) Proc. Biol. Soc. Washington, vol. 21, 1908, p. 120. 



3 ) Bell|: Cat. British Echinoderms, 1892, p. 60. 



p. 169, 



Bergen, December 20. 1918. 



