34 PEOP. p. M. DtriTCAJf's REVISION OF THE 



The next three genera are not satisfactory. 



G-enus Temnocidaris, Gotteau, 1863, Pal. Fmng., Terr. Gret. 

 vol. vii. p. 355. 



Test large, spheroidal. 



Apical system large, flush, wider than the peristome. 



Ambulacra subflexuous, narrow ; poriferous zones broad, the 

 pairs of pores in simple series ; interporiferous areas with small 

 granules placed without order, except a larger row near the 

 poriferous zone. 



Interradia large ; tubercles numerous and large, plain and 

 scrobiculate ; miliary areas large and minutely granular, marked 

 with linear depressions. 



Peristome moderate, subcircular. Numerous small shallow 

 circular pits in the miliary areas and in the interporiferous areas, 

 but scattered without order, and not in relation with the sutures 

 or their angles of junction. 



Fossil. Cretaceous : Europe. 



The pits do not resemble those of the Temnopleuridae ; and 

 there is a suspicion of their post-mortem origin. Certainly the 

 test, apart from the pits, is that of a Gidaris. 



G-enus Poltcidaris, Quensfedt, 1858, Der Jura, p. 644, tab. 79. 

 fig. 69 ; 1874, Fetr. Deutschl. p. 216, tab. 69. figs. 10-12. 

 Zittel, 1879, FalcBont. Bd. i. Lief. iii. p. 496. 



Coronal plates low, broad, numerous in the broad interradia 

 (9-15), two vertical rows of primary tubercles which are per- 

 forate and crenulate, and with scrobicules which run the one 

 into the other vertically. Median interradial area smooth, 

 between broad angular zones. 



Ambulacra very narrow, straight ; pairs of pores in simple 

 series ; pores separated by a nodule ; interporiferous areas with 

 two vertical rows of very small and numerous tubercles or 

 granules. 



Fossil. Oolite : Europe.* 



* Leptocidaris, Quenst., 1858, pi. 90. fig. 10 ; 1874, Petr. Deutschl. p. 232, 

 tab. 69. figs. 71-71^. This name was given to a fragment in which the coronal 

 plates are numerous and low, and the pairs of pores are in simple series. 



In Quenstedt's last work, 1874, the anatomy of an ambulacral plate is given, 

 and it is not that of a Gidarid. The genus is placed after the Hemicidaridie, 

 p. 65. 



