198 Zoological Society. 



Calliderma Emma. £? 



Flat, pentangular, the sides concave, the arms elongated, produced, 

 tapering to a fine point, about two-thirds the length of the diameter 

 of the disc. The dorsal ossicules six-sided, regular, flat-topped, 

 covered with minute roundish granules ; the central granules of the 

 central ossicules and those down the centre of the arms larger, 

 globular, tubercular- like. The margin sharp-edged, concave in the 

 centre ; the ossicules of the upper and lower series alternating, mi- 

 nutely granular, with one or two larger subspinose granules on the 

 middle of the upper margin. Marginal ossicules about fifty on each 

 surface on each side, the lower series with scattered, acute, com- 

 pressed spines on their oral side. 



The ossicules of the oral side four- or six-sided, rather irregular, 

 minutely granular, each armed with a central, compressed, acute, 

 mobile spine. 



Inhab. ? 



This species most nearly resembles a fossil found in the chalk, 

 which has hitherto been referred to the genus Tosia, and figured in 

 Mr. Dixon's forthcoming work on the fossils of Worthing. 



I have named this fine species in compliment to my daughter 

 Mrs. J. P. G. Smith, who before her marriage commenced a series 

 of plates to illustrate a monograph of this genus. 



Anthenea. 



This genus may be divided into two sections, one having a very 

 large two-lipped pore on each ossiculus of the oral surface ; the 

 back netted and chaffy, as in A. chinensis and the following new 

 species. i 



Anthenea tuberculosa. £~ A/ k I 



Back obscurely netted, rather chaffy, with scattered, long, flat- 

 backed tubercles. Marginal ossicules with some moderate granules, 

 the upper ossicules with one or more large flat-topped tubercles on 

 their upper part. 



Inhab. Port Essington. 



This species is very like Anthenea chinensis, Gray (Asterias pen- 

 tagonula, Lam. ?), but differs from it in being more convex and netted 

 and more distinctly tubercular, and in the upper marginal tessera 

 being armed with tubercles. 



Like the Chinese species, all the ossicules, both marginal and discal, 

 of the oral surface, are furnished with large, elongated, two-lipped 

 pores. 



The second section contains the following species, which have one 

 or more small two-lipped pores on some of the ossicules of the oral 

 surface ; the back subtubercular, and the ossicules all covered with 

 arge roundish granules. 



Anthenea granulifera. & 5 f\ C- 

 Both surfaces covered with small roundish granules, the back with 



