140 BULLETIN 70, UNITED STATES NATIONAL MUSEUM 



Atteriaa brachiata Pbbbibr, not Linnaeus, Revision des Stelleridcs, 1875, p. 65; Gulf of 



Georgia. 

 - Has (Diplastcrias) epichlora de Loriol, Mem. Soc. Phys. et d'Hist. Nat. Geneve, vol. 



32, 1897, p. 19, pi. 3, figs. 2, 2d. 

 Asterias saanickensis de Loriol, Mem. Soc. Phys. et d'Hist. Nat. Geneve, vol. 321, p. 897, 



p. 23, pi. 2, figs. 3, 3a-3<2, 4, 5. Snanich Inlet, Vancouver Island. 

 Asterias vicloriana Vburill, Ainer. Journ. Sci., vol. 28, 1909, p. 68; Victoria, British Colum- 

 Shallow-water Starfishes, 1914, p. 124, pi. 53, fig. 1; pi. 54, figs. 1, 2; pi. 69, fig. 4; 



pi. 82, tigs. 1-lc. 

 A. troschclii (St.) var. rudis Verrill, Amer. Nat., vol. 43, 1909, p. 542; Victoria, British 



Columbia. 

 Asterias acanthosioma Verrill, Amer. Nat., vol. 43, 1909, p. 543; no locality. 

 Leptasterias macouni Verrill, Shallow-water Starfishes, 1914, p. 124; Departure Bay, 



British Columbia. 

 Leptasterias (?) inequalis Verrill, Shallow-water Starfishes, 1914, p. 117, pi. 73, fig. 2; text, 



figs. 4, 5 (probably very young specimen, Orca, Prince William Sound). 

 Leptasterias epichlora miliaria var. subnodulosa Verrill, Shallow-water Starfishes, 1914, 



p. 139; Wrangell, Alaska. 

 Evasterias troschclii Verrill, Shallow-water Starfishes, 1914, p. 151, pi. 22, figs. 1, 2; pi. 



25. figs. 1, 2 (type); pi. 26, figs. 1, 2; pi. 62, fig. 1; pi. 106, figs. 1, 2. 

 Evasterias troschelii var. rudis Verrill, Shallow-water Starfishes, 1914, p. 158. 

 Evasterias troschelii var. densa Verrill, Shallow-water Starfishes, 1914, p. 161; Victoria, 



Britisli Columbia. 

 Evasterias troschelii var. alveolala Verrill, Shallow-water Starfishes, 1914, p. 162, pi. 62, 



fig. 1; Departure Bay, British Columbia. 

 Evasterias troschelii var. subnodosa Verrill, Shallow-water-Starfishes, 1914, p. 163; Wran- 

 gell, Alaska. 

 Evasterias troschelii var. parvispina Verrill, Shallow-water Starfishes, 1914, p. 163, pi. 106, 



figs. 1, 2; Sitka, Alaska. 

 Evasterias acanthostoma Verrill, Shallow-water Starfishes, 1914, p. 165, pi. 20, figs. 1, 2; 



pi. 24, fig. 3 (type) ; Popof Island, Alaska. 



Diagnosis. — Rays five, rarely six; actinal plates in three, sometimes four series 

 at base of ray; superomarginal plates lateral in position, defining ambitus; adam- 

 bulacral armature diplacanthid, or diplacanthid and monacanthid. Abactinal spines 

 exceedingly variable: (1) Large and much smaller ones intermingled without the 

 formation of a reticulate pattern (forma troschelii, pi. 60, fig. 1); (2) large and much 

 smaller spines, grading imperceptibly into uniformly coarse spines, but arranged in 

 reticulate pattern (forma alveolata, pi. 62); (3) spines uniformly very small and 

 arranged usually in a reticulate pattern (forma acanthostoma, pi. 64, figs. 2, 3; pi. 65). 

 Rays generally long and fairly slender, but very variable. Straight pedicellariae, 

 small lanceolate, without terminal teeth. 



Evasterias troschelii is one of the most variable among many variable species of 

 the northwest coast. Its forms very closely parallel those of Pisaster ochraceus and 

 many specimens when preserved resemble slender rayed examples of that species. 

 Forma acanthostoma parallels forma confertus of Pisaster ochraceus; forma alveolata 

 resembles forma ochraceus; while forma troschelii and its acervate intergrades with 

 alveolata correspond to forma nodiferus (of P. ochraceus). 



It is not possible to identify with certainty Brandt's Asterias epichlora, from 

 Sitka, although in all probability the green phase of forma alveolata was referred to. 

 Brandt's description is as follows: Diameter of the moderate sized subdepressed 

 disk scarcely exceeding a thumb-breadth. Rays five, conical, unequal, subdepressed, 



