UNIVERSITY OF CALIFORNIA PUBLICATIONS 



ZOOLOGY 



Vol. 6, No. 3, supplement October 23, 1909 



CORRECTION OF THE NAME OF AN 

 OPHIURAN. 



In ni\ paper "The Ophiurans of the San Diego Region" 

 (Univ. Calif. I'ubl. Zool., Vol. 6, No. 3) I named one species 

 of doubtful affinities after Verrill. Later I transferred this 

 species to the genus Amphiura, but overlooked the fact that 

 there was an Amphiura verrilli previously described. To avoid 

 possible confusion I now suggest the name diastata for this spe- 

 cies. 



Amphiura diastata, sp. no v. 



Amphiura verrilti McClendon. "The Ophiurans of the San Diego Re- 

 gion," Univ. Calif. I'ubl. Zool., Vol. 6, No. 3, p. 43, figs. 10-11 (plate 2). 



Diameter of disc 8 mm. Length of arm five times diameter 

 of disc. Disc above and below covered with imbricated scales. 

 Radial shields naked, separated, and about twice as long as 

 broad. Three pairs of mouth papillae, two of which may be 

 considered oral tentacle si-ales. Teeth. No tooth papillae. Mouth 

 shield diamond shaped, the edges next to the genital openings 

 concave, corners rounded. Side mouth shields narrowed and 

 meeting within, broad without. Genital openings beginning at 

 mouth shields. One flat tentacle scale. Ventral arm plates con- 

 cave on distal margin, narrowed proximally. Side arm plates 

 meeting above, meeting below except at base of arm. Dorsal 

 arm plates elliptical, about twice as broad as long. Four stout 

 tapering arm spines, a little longer than arm joints. Color of 

 dried specimen light grey. 



San Diego M. B. L.: San Diego, 100 fathoms. XXXI-a, near Potts 

 Valley, San Pedro. 



J. F. McClendon. 



Woods Hole, Massachusetts, 



September 14, 1909. 



