ECHINOIDEA. (IV, G.) 
Echin. 57 
Mortensen (195) p. 38 : descr. ; de Meijere (67) p. 46, pis. iii, xiv. 
D. molle; Mortensen (195) p. 38. 
\Desorella discussed (? incl. Pachyclypeus ; Lambert in Review) & D. data 
descr. & figd. ; Woods (293). 
Diadema descr.; Delage (54) p. 231 : diagnosis; Fourtau (83) p. 411. 
D. antillarum , descr. (p. 14, pi. iii, v) [v. efc. sub Dermatodiadema\ 
D. globulosum [ditto], distinguished from D. saxatile, but probably 
syn. of I), savignyi (p. 17, pi. iii), D. lamarcki Rouss., syn. of D. 
saxatile (p. 17), D. mexicanum descr. (p. 15), D. paucispinum, perhaps 
syn. of D. savignyi (p. 17), D. savignyi , descr. (p. 16, pi. iii— v) ; 
Mortensen (195). D. saxatile ; Bell (22a) : Herdman (120) p. 139 : 
Martens (185) : ( = setosum ), radioles, pedicellariae ; de Meijere (57) 
p. 49, pi. xiv : incl. D. setosum , distinguished from D. antillarum & D. 
savignyi , descr., esp. pedicellariae, spicules, & radioles ; Mortensen 
( 195) p. 9, pi. iii-v. D. setosum , incl. D. savignyi ; Fourtau (83) 
p. 412. f D. texanum ; Udden (273) p. 37. 
Diadematidae, brief systematic account ; Fritel (87) : classification of 
genera, value of various characters, Fam. should include Diadema, 
Echinothrix , Astropyga , Chaetodiadema, Centrostephanus, Lissodiadema, 
Placodiadema , Helikodiadema ; Mortensen (195) p. 40. 
Diademida defined (p. 216) descr. with Tribes Diadem -, Salen-, Cyphosom-, 
Echin-ina (p. 229) ; Delage (54). 
Diademina defined with Famm. Aspidodiadem -, Diadem -, Micropyg -, 
Pedin -, & Hemicidaris-inae ; Delage (54) p. 230. 
Diademinae defined with list of genera ; loc. cit. 
t Diademopsis : — D. buccalis Dumortier non Ag. is syn. of D. serialis , & 
D. nuda Dum. is syn. of Palaeopedina globulus ; Lambert (148) p. 544. 
D. serialis ; Lissajous (153) p. 165. 
Dialithocidaris ; Delage (54) p. 237 : diagnosis (p. 55), D. gemmifera 
descr. (p. 56, pis. xv, xxiii) ; Agassiz (3). 
t Dictyopleurus ; Mortensen (195) p. 112. 
t Diplocidaris \ Delage (54) p. 229. D. gigantea\ Maire (178). 
t Diplopodia\ Delage (54) p. 235. D. aequale (p. 165), D. areolatum 
(p. 163); Lissajous (153). D. aroviense ; op. cit. p. 165: Maire (176), 
D. bipimctatum; Lissajous (153) p. 165: probably not this sp. ; 
Lambert in Review. D. calloviense (p. 162), D. langi (p. 164); 
Lissajous (153): cannot be DesoFs sp., wh. is a Polydiadema ; 
Lambert in Review. D. martini n. sp. Lr. Callovian, Mancey nr. 
Tournus, cotypes Mus. Tournus, Lissajous; Lissajous (153) p. 162, 
pi. ii. D. oppeli\ Walther (281) p. 167. D. tajfi, descr. ; Loriol (162) 
p. 56, pi. iv. D. texanum ; Richardson (227) p. 48. 
Diplopodidae rejected ; Mortensen (195) p. 44. 
Diploporus Trosch., rejected (p. 75) but might be used for Salmacis 
dussumieri (p. 76); Mortensen (195). 
Diplothecan thus diagnosis; Meissner in Hamann (112) p. 1382. 
Discocidaris (vide etiam sub Gidaris ) ; Delage (54) p. 227. 
t Discocystis) Klem (142) p. 73. 
t Discoidea: — D. cylindrica ; Strangways (266) p. 80: Wollemann (290). 
D. inf era, D. minima , D. pentagonalis ; Collet (44) p. 76. 
\Ditremaster nux ; Gourdon (102) p. 220. 
Dorocidaris (vide etiam sub Cidaris ) ; Delage (54) p. 228, fig. D. brac- 
teata (p. 23), D. panamensis , descr. & discussed (p. 20, pis. i-v) shape 
of test (p. 1, f. 3) size of actinal system (p. 3, f. 12) anal plates in 
young (p. 7, f. 22, 24) growth of coronal plates (p. 9, f. 26-29 & 43-45) ; 
Agassiz (3). D. papillata ; de Meijere (57) p. 204: juv., anal 
: system (p. 3, f. 14), pedicellariae (p. 22) ; Agassiz (3). 
\Dysaster : — D. granulosus ; Welsch (283) p. 27 : Lissajous (153) p. 180. 
D. moeschi ; loc. cit. D. siliceus ; Siemiradzki (255) p. 142. 
