SHALLOW-WATER STARFISHES 355 



A. minuta Per., 1875. 



Patagonian and Fuegian ; shallow-water. 

 A. lysasleria Ver., nom. nov. = A. perrieri (Std. noit Smith). 



South Georgia, cast ashore; also Fuegian (t. Perrier). 

 A. studeri (Per.), 1891. 



Falkland Is., 320 meters ; carried young. 

 A. verrillii (Bell, 1881, p. 513. pi. XLVii, fig. 3, as Astcrias). 



Fuegian ; Gregory Bay, etc., littoral. 

 A. lactea Lud. (1903, p. 50). 



About S. lat. 71°. in 450 meters. 

 A. helgica Lud. (1903. p. 51). 



About S. lat. 70°, in 560 meters; carried young. 

 A. tenera (Koehler, 1905). 



Wandel I. ; carried young. 



The attached young of A. belgica were described by Ludwig, 1903. 

 p. 53, pi. VI. figs. 61-65 : pl- vii, figs. 66, 67. 



For the following species, placed in Anasterias by Ludwig, I pro- 

 pose to establish a new genus : 



Genus Paedasterias Verrill, nov. 

 Type A. chirophora (Ludwig, op. cit., igo3, p. 43, plates v, vi, vii). 



Thi.s is monacanthid and incubates its young, and therefore prob- 

 ably has ventral genital pores. Its skeleton is more reduced than in 

 Anasterias, the upper marginal plates being absent, except as rudi- 

 ments distally. It is covered by a thick dermis and bears large, wide, 

 felipedal pedicellariae. 



It is found at from 450 to 560 meters, in the Antarctic Ocean, south- 

 west of Cape Horn, about S. lat. 70° to 71°. 



Ludwig has carefully described and figured the attached young. 



Genus Sporasterias Perrier. 

 Type, Asterias rugispina Stimpson. 

 Sporasterias Perrier, i8g6, p. 55. 

 Anasterias (pars) Perrier, 1891 (non 1875). 

 Sporasterias Ludwig, 1905. 



This is a monacanthid genus with a reticulated dorsal skeleton, not 

 replaced by a thick dermis, bearing numerous small, scattered spines, 

 and usually numerous pedicellariaj of both kinds. 



Interactinal spines are usually absent; sometimes there is an 

 imperfect row. Inferomarginal spines are usually two to a plate; 

 superomarginal ones usually one to a plate ; interactinal papul.-e 

 usually solitary, enlarged proximally ; jaws and adoral ridge narrow, 

 elongated. 



