320 BULLETIN OF THE BUREAU OF FISHERIES. 



the larger actinal spine shorter and stouter, ami gradually flaring at the tip, which is broad, truncate, 

 and flower-like, as in Brisinga cricophora. 



Actinostonie rather wide, 16 mm. in diameter; mouth plates small, inconspicuous, rather narrow, 

 with a flaring inner or free margin, the combined pair being shield-shaped; armature consisting of 3 

 or 4 membrane-invested, pedieellaria-bearing spineleta on the inner free flange-like margin of the 

 plate, that nearest median suture the shortest, the rest evenly graduated in size outward; at aboral 

 end of plate 1 "I- i' similar spinelets reaching nearly across furrow; on actinal surface 2 much larger 

 and heavier, pointed, sacculate spinules standing in a longitudinal linear series, the inner the longer, 

 and slightly nearer the median suture; occasionally ."> spinules. 



Madreporic body small, subtubercular, situated near margin of raised portion of disk, its borders 

 beset with numerous spinelets. 



Color in life: Abactinal surface of disk flame scarlet; rays "salmon pink" with a yellowish cast, 

 much lighter than disk; edges of furrow pinker; spines "salmon color;" tube feet pinkish orange. 



Locality: Station 4530, Monterey Kay, 958 fins., soft mud. 



This species is particularly characterized by the very extensive genital region, which extends 

 about half the length of ray, and by the exceedingly delicate abactinal plates. 



