20 



TABLES OF ASTROPHYTOXs A\h ASTROSCHEMA. 



Table of the simple-armed Astrophytons. 



Teeth, tooth-papflln and 

 mouth-papilla' represented by 

 a clump of smooth, rounded, 

 tapering spines, chiefly at 

 inner angle of j 



Teeth, tooth-papillse, and 

 mouth-papilla; all spinifonn, 

 but arranged somewhat as 

 among Ophiurans, on the 

 point of the jaws and along 

 the lower edges of the mouth- 

 slits. 



True teeth as among Ophi- 

 uridte. No tooth-papills or 

 month-papilla;. 



Genital openings at outer corners of interbrachial spaces, 

 and parallel to the anus. Skin granulate. Numerous peg- 

 like tentacle-spines Astrotoma. 



Genital openings at inner angle of interbrachial space, skin 

 . naked and soft Thorny, hooked tentacle -spines . . . . 



'4 "iiitiil openings near outer corners of interbrachial space 

 and parallel to anus, skin granulate and beset with stamps 

 or spines. Anns prolonged into the disk as strong ridges 

 occupying most of its upper Burface. Numerous tentacle- 

 spines with thorny ends 



Genital openings near outer corner of interbrachial space 

 and parallel to arms. Skin granulate and beset with stumps 

 or spines. Disk rising distinct from the arms. Numerous 

 tentacle-spines with thorny ends 



■1 openings vertical and at inner angle of in tei brachial 

 apace. Skin naked and soft, a few (usually two) tentacle. 

 spines to each pore . . . 



Astronyx. 



Astroporpa. 



Astrogornphus 



Ophiocreas. 



Qenital openings vertical and at inner angle of interbrachial 

 space, skin granulate. A few (usually two) tentacle-spines 

 to each pore Astroschema. 



Table of the species of Astroschema. 



Tentacle-spines 



A. oligactes. 



Two, rounded tap 

 •■ling, to each pore. 

 Towards middle ..f 



arm, the Dl II 



median line is 

 mm h longer and 

 touter, and thorny 

 at the tip, but Dot 

 dub-shape. 





Length of ami . . 14ii">m. 



Width of arm . 



Grains on upper 

 of arm 



in a mm. long . 



4 or 5 ; pointed 



rib* wide, 

 ronrinent ; 

 margin of di-k 

 angular : 

 r..ugh, »!■ 

 grains. 



A. tenue. 



A. lasve. A. Steenstrupii. A. sulcatum. 



One small and None on first None on first None on first 

 spinifonn on each pair, or two pairs pair of pores ; <>n two pairs ; then a 

 of first two pairs ofl of pores; a single all beyond two -ingle small one 

 sndthat, Bat one till the 8th short and thick farther out. two, 

 two to each pore, pore, where begins ones. Mew middle of arm 



Towards middle ol a small additional the larger spine is 



arm, the larger one one, at midd long, bent elub- 



isshort,clnb-ehape, arm, about as in sbape,andstrongly 



long, and .1 thorny at the end. 



lightly thorny 



8 or 9 ; smooth 





9 to 15 ; smooth 



About as in A. 



Grains not .lose, 

 but set iii lines. 



Radial I widi Radial 



row and not prom- and arched, u in A, 



in.iii. margin oil pying the whole up- Asm, Granulation 

 disk angular ; sui tiemai arranged in mors 



fact »ii ih. with gin with 10 curres 



Dotation Bni 

 rnwirth. 



About 9 to 15 ; 

 smooth. 



Radial ribs nar- 

 row and not run- 

 ning to the outre. 

 Granulation Baa, 



