164 A. E. Verrill — Hevision Genera and Species of Starfishes. 



the body, but on one margin there are two ventral plates corre- 

 sponding to one of the upper dorsals nearest the median line, so that 

 there appears to be an odd, lower, interradial plate on this side. 



The dorsal marginal plates are smooth, microscopically strigillate, 

 and naked except for a single row of small, round marginal granules 

 and a central irregular cluster of large, well spaced, round granules, 

 each implanted in a pit and easily detached. They are lacking on 

 the small distal plates. Three or four of the distal plates are in 

 contact medially. The apical plate is of moderate size, wedge-shaped 

 proximally and prominent at the tip. 



The ventral marginal plates have most of the surface covered with 

 implanted round granules, like those of the upper ones, and distinctly 

 larger than those of the marginal row. 



The abactinal plates are flat, even, closely crowded, regularly 

 arranged, and mostly of about the same size, though the median 

 radial rows are easily distinguished. Thej^ are mostly rounded or 

 hexagonal with rounded angles. They are covered with small 

 hemispherical bosses, but are not granulated, having only a single 

 row of minute grains around the edges. A group of these grains, 

 of somewhat larger size, surrounds each papular pore. The latter 

 are few and small, but easily visible ; they are conBned to the basal 

 radial areas. The madreporite is small, convex, prominent, with fine 

 gyri. 



The proximal adambulacral plates bear each a strait, regular row 

 of five or six short, blunt, prismatic spinules in the furrow-series. 

 The actinal side bears a second row of about four stouter conical 

 spinules, of about the same diameter, but larger than the actinal 

 granules ; the outer margin bears four to six granules, like those of 

 the actinal plates. Distally the plates have an angular inner edge, 

 with fewer and more slender spinules in an oblique row, while one or 

 two of those in the actinal row become much longer and larger. 



The actinal plates are large, mostly rhombic, well defined, and 

 covered with rather coarse, somewhat conical granules, which are 

 not closely crowded. 



Pedicellariae, about like the gi-anules in size, with naiTow oblong 

 blades, occur very sparingly on the adambulacral and some of the 

 actinal plates. The dentary plates are large, covered with spaced, 

 conical granules, similar to those of the actinal plates, but larger ; 

 those near the apex become stouter and prismatic, like the apical 

 teeth ; there are 7 or 8 in the furrow-series, similar to the adambu- 

 lacral spinules. 



