44 ASTEROIDEA. 



29. Nectria, Gr. — Body rather pyramidal, coriaceous, scattered with truncated warts, 



granular at the top ; rays roundish, produced, edged with two series of flat, 

 granular warts on each side, beneath largely granular. N. oculifera, Lamk. 



30. Nepanthia, Gr. — Body small, flat ; rays very long, cylindrical, tapering, not 



margined, formed, above and below, of many regular longitudinal and transverse 

 series of flat-topped tubercles, furnished at the top Vvith a series of elongate, 

 spine-like granulations. N. tesseUata, Gr., Brit. Mus. 



31. MiTHRODiA, Gr. — Rays cylindrical, elongate, spinulose ; skeleton netted with small, 



scattered, rugose spines, and a series of large, clavate, spinulose spines, regularly 

 articulated to a broad, expanded base on the sides of the arms. P. reticulatus, 

 Linck., Stel. Mar., t. 6, figs. 10 and 16. 



3:2. Uniophora, Gr. — Body rather depressed; rays broad, blunt ; skeleton formed of a 

 series of transverse, oblong ossicula, each bearing a large, unequal-sized, sub- 

 globular, articulated spine, placed in a longitudinal series ; dorsal wart convex, 

 complicated. U. glohifera, Gr. 



Family 4. — Asterinid^. 



Body discoidal or pyramidal, sharp-edged; skeleton formed of flattish, imbricate 

 plates ; dorsal wart single, rarely double. 



1. Palmipes, Linck. — Body flat, thin, nearly membranous, margin radiately striated; 



the dorsal ossicula with a radiating tuft, and the oral ones with a transverse line 

 of many thin mobile spines; ambulacral spines in oblique, rounded groups. 

 P. membranaceus, Linck., Stel. Mar., t. 1, fig. 2. 



2. Porania, Gr. — Body pyramidal, thick, five-rayed ; skin above and below varnished, 



spineless ; dorsal ossicula irregular ; margin with two series of large ossicula, the 

 lower ones produced, sharp-edged, and each furnished on the edge with a series of 

 mobile spines. Goniaster Templeioni, Forbes, Brit. Star-fishes, p. 122. 



3. AsTKRiNA, Nardo. — Body rather pyramidal, five-rayed; the back convex; the oral 



surface flat ; the ossicula of each surface furnished with one or more mobile, 

 tapering spines ; the margin sharp-edged, each of the ossicula with a marginal 

 series of spines ; ambulacral spines placed in groups of four or five. 

 Asterina (jihhosa, Penn., Forbes, Brit. Star-fishes, p. 119. 



