1923] Clark, Echinoderms from Lower California 151 



Phataria unifascialis (Gray) 

 Linckia (Phataria) unifascialis Gray, 1840, Mag. Nat. Hist., (new series), 

 VI, p. 285. 



Phataria unifascialis, Sladen, 1889, 'Rep. Voy. 'Challenger,' Zool.,'XXX, p. 786. 



These dried specimens from two additional localities have R = 55 to 

 80 mm. 



Espiritu Santo Island, east coast of Lower California. 

 San Francisquito Bay, east coast of Lower California. 

 Twelve specimens. 



Pharia pyramidata (Gray) 

 Ophidiaster (Pharia) pyramidatus Gray, 1840, Mag. Nat. Hist., (new series), 

 VI, p. 284. 



Pharia pyramidata Sladen, 1889, 'Rep. Voy. 'Challenger,' Zool.,' XXX, p. 784. 



This well-known and characteristic "West coast" species was not 

 represented in the first collection, but now there are some small speci- 

 mens at hand, with R = 67 to 74 mm. 



San Francisquito Bay, east coast of Lower California. 



Three specimens. 



Solaster borealis (Fisher) 



Crossaster borealis Fisher, 1906, Proc. Washington Acad. Sci., VIII, p. 134. 

 Solaster borealis Fisher, 1911, Bull. U. S. Nat. Mus., No. 76, p. 320. 



There is an additional specimen from Station 5694, with 11 rays, 

 R= 30 mm. ; and another from Station 5696, with 11 rays, R = 50 mm. 



Heterozonias alternatus (Fisher) 



Crossaster alternatus Fisher, 1906, Proc. Washington Acad. Sci., VIII, p. 131. 

 Heterozonias alternatus Fisher, 1910, Ann. Mag. Nat. Hist., (8) V, p. 172. 



Considerable additional material of this species is at hand from 

 Stations 5694. 5697, and 5698. They show a good range in size, as R = 

 23 to 110 mm. One specimen has eleven rays; all the others ten. 



Fourteen specimens. 



Lophaster furcilliger Fisher 

 Lophaster furcilliger Fisher, 1905, Bull. U. S. Bur. Fish., XXIV, p. 312. 

 There are ten more specimens of this sea-star from Station 5694, 

 with R ranging from 27 to 60 mm. 



Peribolaster biserialis Fisher 

 Peribolaster biserialis Fisher, 1905, Bull. U. S. Bur. Fish., XXIV, p. 313. 

 There is another specimen from Station 5696, and it is the largest of 

 those taken, as R= 20 mm. 



