CLARK: THE CIDARIDAE. 195 



which dc Mcijore described as Cidaris glandulo.w. There can be no question of 

 their close relationship to St. bispinosa, and it is quite possible, as de Meijere (p. 5) 

 himself suggests, that they are the young of that species. Besides the characters 

 already mentioned in the key, these specimens were remarkable for the number 

 of large globiferous pedicellariae, like those of P. Maculosa, which they bore. 



Stephanocidaris hawaiiensis. 



Stephanocidaris hawaiiensis A. Agassiz and Clark, 1907, Haw. Pac. Ech. 



Cid., p. 18. 



Plates 34 and 25, Haw. Pac. Ech. Cid., A. Agassiz and Clark, 1907. 



A large series of specimens of this handsome species was collected among the 

 Hawaiian Islands by the " Albatross," at depths of 20-320 fths. It is a typical 

 member of the genus, and is not at all likely to be confused with any other species. 

 The largest specimens are 34-42 mm. h. d. and have primaries 90-105 mm. long. 



TEMNOCIDARIS. 



Temnocidaris Cotteau, 1863, Pal. Fran 9. Terr. Cre't, 7, p. 355. 

 Plates 1085-1087 bis, Pal. Franc. Terr. Cret., 7, Cotteau, 1863. 



Test large, much like Phyllacanthus ; coronal plates 6-8 ; areolae very distinctly 

 sunken ; median interambulacral area broad, well covered with miliary tubercles, 

 with more or less horizontal, narrow grooves and deep, circular pits; ambulacra 

 narrow, .20-.25 of interambulacra ; poriferous zones considerably sunken ; median 

 ambulacral area with numerous tubercles, often arranged in horizontal series, and 

 with a few deep, circular pits ; pores widely separated, more or less nearly horizon- 

 tal and connected as in Phyllacanthus. Abaetinal system apparently larger than 

 actinostome. Primary spines stout, as in Phyllacanthus. Secondaries and pedi- 

 cellariae 1 



If Duncan ('89) is correct in his surmise that the pits are of post-mortem 

 origin, Temnocidaris becomes of course a synonym of Phyllacanthus. Until this 

 can be demonstrated, however, the genus is entitled to recognition. The three 

 species which have been named are all from the Cretaceous. 



GONIOCIDARIS. 



Goniocidaris Agassiz et Desor, 1846. Cat. Rais. Ann. Sci. Nat. (3), 6, p. 337. 



Test moderately high, .50-70 h. d., but not especially thick or solid; coronal 

 plates numerous in proportion to h. d., 6-11; areolae somewhat deeply sunken; 

 median interambulacral areas deeply and distinctly sunken (deeper than areolae, 

 especially at angles), and usually bare along vertical suture, often with short, 

 bare, lateral depressions along inner end of horizontal sutures; in some cases, how- 

 ever, vertical suture nearly concealed and only lateral furrows conspicuous ; in still 



