74 E chin. 
XIV. ECHINODEllMA. 
p. 366. — H. meneghini , fresh characters described, and two varieties, 
complanatus and convexus , distinguished ; Bontscheff (40) p. 372. 
t Infulaster: — I. excentricus , Liineburg; Stolley (319) p. 175. 
I. boulei , Cretaceous, ? Senonian, near Diego-Suarez, Madagascar ; Lambert 
( 178) Bull. Soc. geol. France, ser. 3, xxiv, p. 331, pi. xiii, n. sp. 
Iraniaster , plastron discussed ; Lambert (178) p. 324. 
Irregulares , order defined, includes sub-orders Gnathostomata , Atelostomata ; 
Zittel (356) p. 191. 
t Isopneustes, discussed ; Schlueter (297) p. 23. 
iJeronia , compared with Lampadaster ; Lambert (178) p. 316. 
t Kcenigia, syn. of Cyphosoma\ Lambert (178) p. 499. 
t Koninckocidaris Dollo and Buisseret, is syn. of Perischodomus ; Tornquist 
( 171) p. 725, footnote. 
Lagaiium depressum, Funafuti; Whitelegge (346) p. 156. 
t Lampadocorys, related to Lampadaster , its genotype u Holaster sidcatus” 
is from Cenomanian of Kioufroid, near Lus (Drome) ; Lambert (178) 
p. 316. 
■f Lampadaster, rediagnosed, affinities discussed (p. 316) ; L. grandidievi , 
redescribed, apex figured (p. 317); Lambert (178) pis. x and xiii. 
L. gauthieri , Cretaceous, ? Senonian, near Diego-Suarez, Madagascar, apex 
and plastron figured; Lambert (178) Bull. Soc. geol. France, ser. 3, 
xxiv, p. 319, pi. xi : n. sp. 
t Leiosoma Cotteau non Brandt, nom. mut. in Trochalosoma (p. 515); L. 
arehiaci , made type of n. g. Pseudarbacia (p. 515) ; L. babeaui , probably 
Phymechinus (p. 516); L. bahezrei , referred to Gomphechinus (p. 516); 
L.jauberti Cott., referred to Phymechinus (p. 516) ; Lambert (179). 
\Leiosominas, sub. fam. of Echinometridce [should be Trochalosonmite ] ; 
Lambert (179) p. 515. 
\Lepidechinus , structure and development discussed on evidence of L. 
imbricatus and L. rarispinus (p. 226, pi. vii) : compared with Perischo- 
domus (p. 241) ; Jackson (139). 
t Lepidesthes, alone in family ; Tornquist (327) p. 732. — L. colletti (pp. 
200, 210), L. coreyi (p. 209), and L. formosus (p. 210), discussed ; 
Jackson (139). 
L. (?) devonicans , Pilton Beds, Devonshire; Whidborne (342) P. Geol. 
Ass. xiv, p. 376, no fig. — L. wortheni, Keokuk group, Indiana, arrange- 
ment of plates fully described, distinguished from L. formosus Miller ; 
Jackson (139) p. 207, pi. ix : n. spp. 
Lepidesthidas, n. fam., distinguished from Lepidoeentridce, including Lepi- 
desthes and Pholidocidans ; Jackson (139) pp. 206, 241. 
t Lepidocentridce, defined; Jackson (139) pp. 222, 242: defined, includes 
Lepidocentrus , and discussed ; Tornquist (327) p. 783. 
t Lepidocentrus : — L. eifelianus , discussed (pp. 224 & 225); L. miilleri , * 
ambulacrals and interambulacrals described (p. 223) ; L. rhenanus , 
discussed (p. 224) ; Jackson (139). 
t Lepidocidans, discussed ; Tornquist (327) p. 773. — L. squamosus , arrange- 
ment of plates fully described, genus maintained; Jackson (138) 
p. 220. 
Leptechinus Gauth., incl. Peronia , place in system; Lambert (179) p. 494. 
t Leptecliinus, n. g. with genotype L. gracdis, Lower Carboniferous Huns- 
riickenwald, Elsass ; Tornquist (327) Abh. geol. Karte Elsass, v, 
p. 63, n. sp. [Nom. gen. preocc., v. supra.] 
t Linthia: — L. arizensis ? (p. 435), L. aurisleporis (p. 435), L. batyolcos 
(p. 435), L. cuoghii (p. 434); Mazzetti (225). — L. capellinii; Botto- 
Micca (41) p. 353. — L. capellinii Loriol — Prenaster falax Mazz. 
(p. 434), L. cavernosa (p. 435), L. injlata (p. 435), L. insignis (p. 433), 
L. locardi'i (p. 434), L. perplexa (p. 434), L. subclliptica (p. 434), 
L. subglobosa (p. 433) ; Mazzetti (225). 
