220 BULLETIN 76, UNITED STATES NATIONAL MUSEUM 



Genus ADELASTERIAS Verrill 



Adelasterias Verrill, Shallow-water Starfishes, 1914, p. 360. Type, Diplasierias papillosa 

 Koehler.— Fisher, 1923, p. 607. 



Diagnosis. — Neither marginal nor abactinal plates present, the skeleton reduced 

 to the ambulacral and adambulacral systems; body covered with numerous papillae, 

 each containing a slender spinelet, disposed without order on all surfaces; adambu- 

 lacral plates diplacanthid. 



1. ADELASTERIAS PAPILLOSA (Koehler). 



I)i idasterias papillosa Koehler, 1906, p. 21, pl.l, figs. 2-5; pi. 2, figs. 18, 19; 1912, p. 21. 

 Graham Land and vicinity, western Antarctica; low tide to 6 meters. 

 Genus ALLOSTICHASTER Verrill 



Allostichaster Verrill, Shallow-water Starfishes, 1914, p. 363. Type, Asteracanihion polyplax 

 Miiller and Troschel. — Clark, 1916, p. 70. — Fisher, 1923, p. 575. 



Diagnosis. — Body covered with small granuliform spinelets; skeleton close-knit, 

 the plates in definite longiseries; carinals and superomarginals broader than other 

 plates; inferomarginals forming ventrolateral edge to ray; dorsolateral area narrow, 

 the plates in a single straight or zigzag series (altogether three series of abactinal 

 plates); one series of actinal plates; inferomarginal plates with oblique transverse 

 series of a few spinelets along ventrolateral margin of ray; cleaned superomarginal 

 plates with minutely beaded surface; adambulacral plates diplacanthid; pedicellariae 

 scattered among spinelets; multiple madreporic bodies; fissiparous; rays six to eight. 



1. ALLOSTICHASTER POLYPLAX (Miiller and Troschel). 



Asteracanihion polyplax Muller and Troschel, Arch. Naturges., 1844, p. 178. 



Asterias polyplax Perrier, Rev. Stell., 1875, p. 63. — Clark, Echinoderms Western Austra- 

 lian Mus., 1913, p. 151. 



Slichasler polyplax Sladen, 1889, p. 432.— Farquhar, 1897, p. 196; 1898, p. 313; 1909, p. 129.— 

 Benham, 1909, p. 15. 



Tarsaster neozealanica Farqdhar, Trans. New Zeal. Inst., vol. 27, 1895, p. 207, pi. 12. 



Alloslichasler polyplax Clark, Biol. Res. Fishing Exper. Endeavour, vol. 6, 1916, p. 70. — ■ 

 Koehler, 1920, p. 85, pi. 18, fig. 7-11; pi. 69, fig. 2— Mortensen, 1925, p. 315, fig. 19a,b. 



Tasmania, Australia, New Zealand. 



2. ALLOSTICHASTER INSIGNIS (Farquhar). 



Slichastcr insignis Farquhar, Trans. New Zeal. Inst., vol. 27, 1895, p. 205, pi. 13, fig. 1; 



vol. 30, 1898, p. 188; Proc. Linn. Soc. New South Wales, 1898, p. 314.— Benham, 1909, 



p. 15. 

 Allostichaster insignis Koehler, 1920, p. 85, pi. 20, figs. 2-7; pi. 65, fig. 2. — Fisher, 1923, 



p. 595.— Mortknsen, 1925, p. 316, fig. 19, c, d. 



New Zealand; Auckland Islands. 



3. ALLOSTICHASTER 1NAEQUALIS Koehler. 



Alloslichasler inaequalis Koehler, 1923, p. 50, pi. 1, figs. 7, 8; pi. 7, figs. 1-3. 

 Magellanic region, 7 to 100 meters. 



