77 



Calliderma Emma. 



Fiat, 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 centrai granules of the 

 centrai 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 altemating, mi- 

 nutely granular, -vvith one or two larger subspinose granules on the 

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

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

 pressed spines on their orai side. 



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

 minutely granular, each armed with a centrai, 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 platės 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 orai surface ; the 

 back netted and chafFy, as in ^. Chinensis and the following new 

 species. 



Anthenea tuberculosa. 



Back obscurely netted, rather chafFy, -vvith scattered, long, flat- 

 backed tubercles. Marginai 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 likę Anthenea Chinensis, Gray (Asierias pen- 

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

 and more distinctly tubercular, and in the upper marginai tessera 

 being armed -with tubercles. 



Likę the Chinese species, all the ossicules, both marginai and discal, 

 of the orai surface, are fumished with large, elongated, two-lipped 

 pores. 



The second section contains the following species, \vhich have one 

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

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

 large roundish granules. 



Anthenea granuufera. 



Both surfaces covered with small roundish granules, the back with 



