1923] Clark, Echinoderms from Lower California 153 



from 15 to 24, but all the large specimens have 23. There is one with 15 

 rays, one with 17, one with 19, one with 20, five with 21, five with 22, 

 eight with 23, and one with 24. 



Espiritu Santo. 



San Francisquito Bay, east coast of Lower California. 



Twenty-four specimens. 



Asterias forreri De Loriol 

 Asterias forreri De Loriol, 1887, Rec. Zool. Suisse, IV, p. 401. 

 There is a very poorly preserved sea-star in the present collection 

 with R = 95 mm. from San Francisquito Bay, which is evidently identical 

 with the sea-stars from the same place which are recorded in the first 

 report as Asterias forreri. As Fisher's revision of the Pacific coast 

 Asteriidae is not yet published, I let the name stand as in the former 

 report, to prevent any possible confusion later on. 



Ophiuroidea 



Since the publication of the first report, the classification of the 

 ophiurans has undergone quite a revolution and the sequence of the 

 species is almost reversed. To facilitate comparison and prevent con- 

 fusion, it seems best to follow the sequence of species that was used in 

 the earlier report. Fortunately, no changes of nomenclature are neces- 

 sitated by the activity of recent years in ophiuran taxonomy. 



Ophiura leptoctenia H. L. Clark 

 Ophiura leptoctenia H. L. Claek, 1911, Bull. U. S. Nat. Mus., No. 75, p. 51. 

 An additional specimen, 6 mm. across the disk, from Station 5694 

 calls for no comment. 



Ophiura superba (Ltitken and Mortensen) 



Ophioglypha superba Lutken and Mortensen, 1899, Mem. Mus. Comp. Zool., 

 XXIII, p. 116. 



Ophiura superba Meissner, 1901, Bronn's 'Thierreich,' II, pt. 3, p. 925. 



There are six additional specimens, 14 to 28 mm. across the disk, 

 from Station 5694. In one fairly perfect specimen, 18 mm. across the 

 disk, the arms are 90 mm. long. 



Ophiocten pacificum Lutken and Mortensen 



Ophiocten pacificum Lutken and Mortensen, 1899, Mem. Mus. Comp. Zool., 

 XXIII, p. 131. 



Two badly damaged specimens, one from Station 5689 and one from 

 5694, are scarcely worth recording. 



