70 Echin. 
XTV. ECHINODEKMA. 
t Mariania Airaghi, rejected, M. chitinosus is a Spatangus , and M. marmorae 
is a Hypsospatangus ; Checchia (39): Checchia’s criticism confirmed ; 
Oppenheim (211) p. 69: genus upheld; Airaghi (3) p. 387. 
Mellita , arrangement of endoskeleton compared with Scutella and Echin- 
arachnius ; Ortmann (212) p. 56. M. stokesii; Clark (48) p. 527. 
M. testudinata , development; Grave (105). 
\Melonites ,— M. crassus , descr.; Keyes (151) p. 182. M. danae , v. sub 
Oligoporus. M. irregularis , syn. of M. multipora ; Keyes (151) p. 181. 
M. multiporus , text-fig.; Fritel (88): descr. (p. 181, pis. xix, xx), 
M. steivartii , syn. of M. multipora (p. 181); Keyes (151). 
Mesospatanginae n. subfam. of Brissidae , comprising Micrasterinae and 
Hemiasterinae ; Lambert in Grossouvre (116) p. 969. 
Metalia sternalis ; Voeltzkow (289) p. 565. 
t Micraster, general distrib.; Grossouvre (116) p. 931. J/. angula d’Orb. 
Prodrome, err. pro ungula q. v. (p. 969), M. arclie r ri (Ten.-Woods sub 
Brissopsis ) fide Tate 1893, ? MS et syn. Cy cluster lycoperdon Bittn. 
(p. 960); Lambert in Grossouvre (116). M. arenatus , descr. and 
referred to Gibbaster ; loc. cit.: probably = M. matheroni , is purely 
Santonian; Peron (219) p. 519. M. atacamensis Philippi, probably 
Schizaster ; Lambert in Grossouvre (116) p. 960: is Schizaster ; 
Ortmann (212) p. 62. M. bigibbus; Lambert in Grossouvre (116) 
p. 960. M. borchardi Hagenow MS. referred to M. leskei by Geinitz, 
this confirmed; loc. cit.: syn. of M. leskei ; Lambert (163) p. 121. 
M. bourgeoisie v. Isopneustes. M. breviporus ; Fortin (80) p. 295: 
Grossouvre (116) p. 17: Wollemann (298, 299, 302): of Ag., based 
on M. decipiens juv., or apud Rowe on M. coranguinum juv.; Lam¬ 
bert in Grossouvre (116) p. 961: the type-cast M. 10 is a young 
M. decipiens , but the later cast R. 81 is quite different; Lambert (163) 
p. 127. M. carentonensis ; Lambert in Grossouvre (116) p. 961: 
(?); Grossouvre (116) p. 444: compared with M. maestrichtensis ; 
Lambert (163) p. 123. M. chilensis Philippi, is Enallaster ; Lambert 
in Grossouvre (116) p. 961. M. ciplyensis Schlueter; loc. cit.: dis¬ 
tinguished from M. maestrichtensis ; Lambert (163) p. 123. J/. conso- 
brinus; Lambert in Grossouvre (116) p. 961. M. coranguinum ; 
Grossouvre (116) pp. 19, 29, 121, 491: Makowsky (188): Peron 
(219) p. 517: Wollemann (300): four varieties (p. 294), conical var. 
(pp. 291, 294); Fortin (80): of Klein, specimens from Gravesend 
descr. (p. 961), of Rowe, discussed, his var. latior is the type of Klein 
& Leske (p. 962); Lambert in Grossouvre (116). M. cf. coranguinum ; 
Semenow (258) p. 15. M. corbaricus-, Grossouvre (116) p. 444: 
Lambert in Grossouvre (116) p. 962 : distrib.; Lambert (161) p. 22. 
M. corbovis, Rowe’s conclusions accepted, distrib. in France (p. 962), 
M. cordiformis Desor, = Cardiaster heberti (p. 963), M. cormannum 
(p. 963); Lambert in Grossouvre (116). J I. cortestudinarium ; Fortin 
(79): Grossouvre (116) p. 490: McPherson (186) p. 17: Wollemann 
(298, 299, 302): (i.e. decipiens)-, Grossouvre (116) pp. 19, 29: of 
Geinitz, 1872, fig. 2 alone = type, fig. 1 probably M. leskei , figg. 3, 4 not 
this sp., Rowe’s interpretation disputed, his specimens = J/. decipiens ; 
Lambert in Grossouvre (116) p. 964: “des geologues anglais corre¬ 
spond a M. decipiens. M. cortestudinarium Goldf. caracterise un niveau 
inferieur”; Lambert (162). M. cuneatus Hagenow, maintained; 
Lambert in Grossouvre (116) p. 964. J/. decipiens ; Grossouvre 
(116) pp. 121, 490, 542 : ( =M. cor-testudinarium) ; Peron (219) p. 517: 
compared with M. maestrichtensis-, Lambert (163) p. 122. J/. fasti- 
gat us Gauth., should probably incl. J/. gibbus Roem., 1870, pi. xxxix, 
fig. 3; Lambert in Grossouvre (116) p. 964: distinguished from 
M. gibbus ; Peron (219) p. 532. M.fortini; Lambert in Grossouvre 
(116) p. 965. M. gibbus (Lam.); loc. cit.: Wollemann (300): of 
