42 ASTEROIDEA. 



two small pores near the oral angle beneath, where the tubercles are rubbed off. 

 Allied to Culcita. B. Luzonica, Gr., Brit. Mus. 



8. Anthenea, Gr. — Body five-rayed, chafiy, with immersed, elongated tubercle-bearing 

 ossicula ; margin with regular rows of large tesserae ; both surfaces (especially the 

 under) scattered with large two-lipped pores. A. Chinensis, Gr., Brit. Mus. 



!J. HosiA, Gr. — Body five-rayed, formed of distinct, hexangular, nearly equal, slightly 

 tubercular ossicula ; back with small, and under surface with larger, two-lipped 

 slits. S.Jlavescens, Gr. 



10. HiPPASTERiA, Gr. — Body four or five sided, formed of roundish ossicula, with a large, 



truncated, central tubercle ; upper and under surfaces with two-lipped pores. 

 H. Europaa, Gr., var. of Goniaster equesti'is, Gmel. 



11. Calliaster, Gr. — Body five-rayed, with flat immersed ossicula, armed with flat- 



based, deciduous, conical spines, and without any two-lipped slits on either surface. 

 C. Childreni, Gr. 



12. Goniaster, Ag. — Ossicula flat, the dorsal ossicula granulated and armed with 



deciduous, flat-based spines ; both surfaces destitute of two-lipped pores. Goniaster 

 cuspidatus, Linck., Stel. Mar., t. 21 and 23, fig. 37. 



13. Pentagonaster, Linck. — Body formed of convex, smooth, and spineless ossicula ; 



ossicles of the under side wath a sunk, central line, a central perforation and a 

 small pit at each end. Marginal ossicula near the tips of the rays very large and 

 swollen, p. pulchellm, Gr. 



14. TosiA, Gr. — Body convex, formed of smooth, spineless ossicula; dorsal and ventral 



ossicula entire, subequal, without any impressed line; marginal ossicula two-rowed, 

 with a small intermediate one near each tip ; dorsal wart triangular. T. Australis, Gr. 



15. EcHiNASTER, Pet. — Body star-like, granulated, depressed ; back rather convex, with 



a circle often to fifteen conical warts ! Ambulacral spines small, placed in groups, 

 with a single continuous row of large slender spines near them. Spines very 

 long, covered with a granular skin, and having generally a second articulation 

 about one third the length of the base. E. Ellisii, Solander and Ellis., Zooph., 

 t. 60—62. 



16. Otutlia, Gr. — Skin smooth, polished; ambulacra with two very close series of 



filiform spines. 0. spinosa, Linck., Stel. Mar., t. 4, fig. 17. 



