06 Ech. 
ECH1NODEEMATA. 
see Cotteau, (4) pp. 138-140, pi. iv, figs. 3 & 4 ; P. vilunovce , Eocene of 
Callosa, Alicante, Cotteau, (1) pp. 65 & 66, pi. viii, figs. 10-13 : n. spp. 
Podocidaris primigera, A g., from 531 and 1590 filths. ; Wood-Mason & 
Alcock, (2) p. 440. 
iPolycyphus ribeiroi , do Lor., Jurassic of Portugal ; de Loriol, (3) 
pp. 107 & 108, pi. xix, fig. 1. 
Porocidaris gracilis , n. sp., Sladen, (1) pp. 699-701, pi. xxix, figs. 1-5, 
S.W. Coast of Ireland, 750 faths. 
P. sp. from 405 faths. ; Wood-Mason & Alcock, (2) p. 440. 
Pourtalesia miranda , Ag., P. jeffrcysii , Wyv.-Th., and P. phyale, 
Wyv.-Th., diagnosis and distribution ; Hoyle, pp. 430 & 431. 
Prcescutella , Pomel : definition and affinities of tho genus ; Cotteau, 
(3) pp. 254 & 255. fP. caillaudi (Cott.), Pomel, Eocene of France ; 
id. (3) pp. 255-259, pis. cclxv & cclxvi, and Eocene of Loire-Inferieure, id. 
(5) pp. 141 142, pi. vii, fig. 6. 
tP. degrangei, n. sp., Cotteau, (3) pp. 259-261, pi. cclxvii, Eocene of 
France. 
Prenaster , Desor, definition of genus ; Cotteau, (1) pp. 45 & 46. 
t; P. ulpinuSy Desor, Eocene of Callosa, Confrides, and Benidorm, Alicante; 
id. (1) pp. 46 & 47. P. excentricus , Wright, Upper Coralline Limestone, 
Malta ; Gregory, (4) p. 619. 
Prionechinus agassizii , n. sp., Wood-Mason & Alcock, (2) p. 441, from 
1644 and 1888 faths. 
Psammechinus miliqris (Muller), Ag., S.W. Coast of Ireland, 5 faths. ; 
Sladen, (1) p. 701. 
f ; P. mirabiliSy Laube, from Miocene of Syria ; Blanckenhorn, 
p. 615, &c. P. peroni, Cott., Tertiary, Carry, near Marseilles; Gourret, 
p. 129. P. pit si Huh, v. Munst., Upper Oligoccno of Doberg ; Lienen- 
klaus, p. 137. P. rainier i (Cott.), Desor, from Lower White Neocomian 
of Bernouil ; Gauthier, pp. 85-90, pi. ii, figs. 5-7. P. woods /, Laubo, 
Eocene of Australia ; Tate, p. 274. 
t; P. cingulatus , Clark, p. 76, Cretaceous, New Jersey ; P. mustapha, 
Pliocene of Algeria, Peron & Gauthier, see Cotteau, (4) pp. 254 & 
255, pi. v, figs. 5 & 6 ; P. soubellensis, Miocene of Algeria, iid. f see Cot- 
teau, (4) pp. 252-254, pi. v, figs. 1-4 : n. spp. 
+ ; Pseudocidaris ulhadensis , de Lor., Jurassic of Portugal ; de Loriol, 
(3) pp. 59 & 60, pi. x, fig. 13. P. choffati , de Lor., ib. ; id. (3) pp. 63 & 
64, pi. xi, fig. 15. P. gaidensis, de Lor., ib. ; id. (3) pp. 64 & 65, pi. xi, 
figs. 16-20. P. lusitanica , de Lor., ib. ; id. (3) pp. 61 & 62, pi. xi, figs. 5- 
13 : synonym, tP. tliurmanni , Choffat. P. rupellensis t Cott., ib. ; id. (3) 
pp. 60 & 61, pi. xi, figs. 1-4. P. spinosa , de Lor., ib. ; id. (3) pp. 66 & 
67, pi. xii, fig. 8-28. P. spissa, de Lor., ib. ; id. (3) pp. 65 & 66, pi. xii, 
figs. 1-8. 
tP. thurmanni, Choffat, v. sub. tP. lusitanica, de Lor. 
t ; Pseudodiadema conforme (Ag.), Etallon, Jurassic of Portugal ; de 
Loriol, (3) pp. 86 & 87, p 1 . xv, figs. 8-10 : synonym, t Diadema bruntru- 
tanum, Ag. & Desor. P. hemisphcericu m , Desor (Ag.), ib. ; id. (3) pp. 83- 
