250 Verrill, JVotes on Madiata. 



Asterina (Asteriscus) regularis Verriii, sp. nov. 



Pentagonal, depressed, with the interradial spaces evenly concave, 

 and the rays short, broad and acute ; greatest radius to least as 15 : 10. 

 Ambulacral pores large ; interambulacral plates each with two slender 

 acute spines, forming a single row. Those near the mouth larger, ob- 

 tuse and flattened. Ventral plates of the first row stout and promi- 

 nent, each bearing a conical, acute spine, twice as large as the preced- 

 ing. Exterior to these the ventral or interradial plates are flattened 

 and imbricated, diminishing in size as they recede from the center? 

 each bearing an acute conical spine ; these diminish in size like the 

 plates, the larger ones being about as thick as the interambulacral 

 spines, but shorter ; near the margin these spines become very small 

 and crowded, many of the plates bearing two. Plates of the upper 

 surface rather large, increasing toward the center, regularly imbri- 

 cated, the free margin evenly rounded and thin, bearing near the end 

 a cluster of five to nine very small, nearly equal spines ; toward the 

 center the plates become less regular in form and unequal in size, the 

 larger ones often bearing twelve or fourteen spines in a transverse 

 cluster. Madreporic plate large and prominent, at about one-third 

 of the distance from the center to the margin. The large dorsal pores 

 are in groups on the sides and within the bases of the rays, arranged 

 in about four rows, which run parallel with the median line of the 

 rays, with from six to twelve pores in a row. A few irregularly ar- 

 ranged pores between adjacent rays connect these groups. 



Color, when dried, dark olive-green above, yellow below. 



From center to end of ray 1 '5 inches ; to edge of disk '8. 



Aukland, New Zealand, — H. Edwards. 



Astropecten Edwardsii Veniii, sp. nov. 



Rays five, long, regularly tapering, acute, about four and a half 

 times as long as the radius of the disk. Ambulacra broad, interam- 

 bulacral plates angular, imbricated, each bearing a cluster of three or 

 four slender spines on the inner edge, and two or three smaller ones 

 on the outer angle, not forming regular rows. Ventral plates densely 

 covered with minute rough spines, each having also a central series of 

 sharp spines, the inner ones very small, increasing outwardly to the 

 external, marginal ones, which are strong, sharp and slightly curved 

 upward, a quarter inch long. The lower marginal plates are opposite 

 the upper, and project considerably beyond them. The latter are ele- 

 vated and narrow, twenty-eight on each side of a ray, the two at the 

 angle between the rays much higher and larger, covered like the rest 

 with rough rounded granules, and each surmounted by a stout, blunt 



