WEST INDIAN STARFISHES 125 



priority, and was described from a single type-specimen. ^° C. 

 corotmtus was not described till 1884, and its type was from off 

 Havana, in 805 fathoms, No. 2. 



Therefore his C. coronatus of 1894 is the same thing as his A. 

 mirabilis of 1881. Whether his C. coronatus of 1884 is a distinct 

 species, is another question, to be settled only by a new study of 

 the type, or other specimens identical in character. 



The type of this species, according to the revised description 

 by Perrier (1894, p. 271) under the later name of C. coronatus, 

 has the following characters: 



Radii 10™"^ and 85°^™; ratio, 1:8.5. The rays are long and 

 slender. Marginal plates forty to forty-two. The center of the 

 disk has about a dozen large spines. 



The superomarginal plates are rather small, imbricated, their 

 proximal convex border alone being visible. They agree in num- 

 ber with the inferomarginals, but are not in line with them. 

 Their surface is covered with numerous fine spinules. Those be- 

 yond the third bear a large conical marginal spine ; that on the 

 fourth plate is usually much larger than the others. Those of 

 the first to third plates are more or less aborted. 



The inferomarginal plates are covered with long and slender 

 spinules; on the first three plates there are also four or five 

 spines, increasing in size upward; on the fourth plate the large 

 marginal spine becomes 7 to 8'°'" in length ; those beyond grad- 

 ually decrease in length ; below the large spine there is usually at 

 least one secondary spine. Some of these plates have a rudi- 

 mentary fasciculate pedicellaria. 



The dorsal plates are numerous, small, rounded, flat, covered 

 with extremely small spinules, almost reduced to the form of 

 granules visible only with a lens. 



The center of the disk has about a dozen long, conical, mov- 

 able spines. (Condensed from Perrier.) 



The papular pores form two symmetrical lateral groups, which 

 are prolonged toward the center of the disk and become coales- 

 cent at a larger radial plate. Five larger interradial plates are 



20 At the end of the 1881 description there is a brief description of an- 

 other specimen, which in 1884 he made the type of a new species {A. in- 

 signis), which is now Dytaster ins-ignis. Thus the name mirabilis cannot 

 be applied to any species except that first described, with the type specimen, 

 from Station 148, in 380 meters, off St. Kitts, as its sole type. 



