PART 5 A MONOGRAPH OF THE EXISTING CRINOIDS 



KEY TO THE FAMILIES OF NOTOCIUNIDA 



a 1 . Large, arms 125 mm. or more in length; gonads situated on the arms at the bases of the pinnules; 

 pinnules numerous, 50 or more on each side of an arm; ventral perisome of the pinnules with 

 conspicuous bandlike side plates, 3 or 4 to each segment, not in lateral contact, each with a 

 small covering plate beyond it; oral pinnules with most of the segments much broader than 

 long; distal portion of the cirri laterally compressed (coasts of the Antarctic continent and 

 adjacent islands; 80-640 (7731) meters) NOTOCRINIDAE, (p. 3) 



a 2 . Small, arms not more than 30 mm. in length; gonads on the pinnules at some distance from the 

 arms; pinnules few, not more than 25 on each side of an arm; ventral perisome of the pinnules 

 without calcareous deposits, or with a few small spicules; oral pinnules with all the segments 

 beyond the first longer than broad, most of them much elongated; distal portion of the cirri 

 flattened dorsoventrally (southern coast of Australia, north to Manning river, New South 

 Wales, and Fremantle, Western Australia; 9-40 meters) APOROMETRIDAE, (p. 19) 



Family NOTOCRINIDAE Mortensen 



Notocrinidae MORTENSEN, Wiss. Ergeb. schwed. Siidpolar-Exped. 1901-1903, vol. G, Lief. 8, 1918 

 p. 10 (diagnosis). GISLEN, Zool. Bidrag Uppsala, vol. 9, 1924, pp. 80, 85, 91, 101, 118, 167, 192, 

 193, 205, 213, 231, 240 (discussion); Vid. Medd. Nat. Foren. K0benhavn, vol. 83, 1927, p. 41. 

 A. H. CLARK, Journ. Linn. Soc. (Zool.), vol. 36, 1929, p. 664. GISLEN, Kungl. Fysiogr. Sallsk., 

 new ser., vol. 45, No. 11 (Lunds Univ. Arsskr., new ser., Avd. 2, vol. 30, No. 11), 1934, p. 18. 

 EKMAN, Tiergeographie des Meeres, 1935, p. 308. A. H. CLARK, John Murray Exped. 1933-34, 

 Sci. Reports, vol. 4, No. 4, 1937, p. 103; Sci. Rep. Australasian Antarctic Exped., 1911-14, 

 ser. C, vol. 8, pt. 4, 1937, p. 6. MORTENSEN, Kongl. Danske Vid. Selsk. Skr., nat. math., ser. 9, 

 vol. 7, No. 1, 1937, p. 63 (larvae in relation to those of Lamprometra klunzingeri. JOHN, Proc. 

 Linn. Soc. London, sess. 149, pt. 2, 1937, p. 86; Discovery Reports, vol. 18, 1938, pp. 124, 126 

 (all spp. viviparous); Rep. B.A.N.Z.A.R.E. 1929-31, ser. B, vol. 4, pt. 6, 1939, p. 207.- 

 GISLEN, Rep. Swedish Deep Sea Exped., vol. 2, Zool., No. 4, 1951, p. 55. HYMAN, 

 The invertebrates, vol. 4, Echinodermata, 1955, p. 95. 



Diagnosis. A family of the superfamily Notocrinida including 10-armed species of 

 moderate or large size with the arms up to about 200 mm. in length; the gonads are 

 situated on the arms at the bases of the pinnules; the pinnules are numerous, 50 or 

 more on each side of an arm; the ventral perisome of the pinnules carries conspicuous 

 bandlike side plates, not in lateral contact, 3 or 4 to each segment, each with a small 

 covering plate beyond it; the oral pinnules have most of the segments much broader 

 than long; and the distal portions of the cirri are laterally compressed. 



Geographical range. Coasts of the Antarctic continent and nearby islands. 



Bathy metrical range. From 80 to 640 (?731) meters. 



History. The history of the family Notocrinidae has been given in the remarks 

 under the superfamily Notocrinida. 



Genus NOTOCRINUS Mortensen* 



Notocrinus MORTENSEN Vid., Medd. Nat. Foren. K0benhavn, vol. 68, 1917, pp. 205-208 (diagnosis; 

 type species N. virilis; discussion); Wiss. Ergeb. schwed. Sudpolar-Expcd. 1901-1903, vol. 6, 

 Lief. 8, 1918, pp. 2-10 (detailed account); Studies in the development of crinoids, 1920, pp. 49-53, 

 pis. 24-26 (larval stages). BATHER, Nature, vol. 107, No. 2683, 1921, p. 132 (review of Morten- 

 sen ) A H. CLARK, The Danish Ingolf-Expvd., vol. 4, No. 5, Crinoidea, 1923, p. 43 (locality). 

 GISLEN, Zool. Bidrag Uppsala, vol. 9, 1924, pp. 39, 56, 85, 91, 118, 167, 193, 206, 222, 236, 284 

 (discussion). MORTENSEN and LIEBERKIND, Die Tierwelt der Nord- und Ostsee, Lief. 12, 1928, 



*See also Addenda (p. 836) under 1962, 1963. 



