a 
GENERAL INDEX. 
Actinocrinus prumiensis, 470. 
puteatus, 603. ; 
— pyramidatus, 512. 
pyriformis, 437. 
var. rudis, 437. 
— quadrispinus, 588, 590. 
—— quaternarius, 601. 
— var. spiniferus, 601. 
—— quinquangularis, 118, 120. 
—— quinquelobus, 460. 
—— ramulosus, 387. 
—— regalis, 638. 
— remibrachiatus, 388. 
—— reticulatus, 605. 
— rotundus, 431. 
—— rudis, 630. 
— rusticus, 559. 
— scitulus, 559. 
—— sculptus (Hall), 583. 
—— sculptus (Miller), (detached columns). 
(Pl. LV, figs. 5-6b.) 
securus, 614. 
sedaliensis, 555. 
semiradiatus, 289. 
senarius, 597. 
sexarmatus, 615. 
Sillimani, 559. 
similis, 382. 
sinuosus, 385. 
speciosus, 638. 
spinobrachiatus, 591. 
spinosulus, 478. 
spinotentaculus, 619. 
—— stellaris, 109. 
—— subaculeatus, 476. 
suheequalis, 369. 
subturbinatus, 466. 
subumbrosus, 633. 
subventricosus, 5938. 
— superlatus, 533, 535. 
symmetricus, 477. 
—— tenuidiscus, 520, 531. 
tenuiradiatus (Hall, 1861, rot 1847), 
634. 
—— tenuisculptus, 555, 571, 574, 609, 622. 
(Pl. LV, figs. 4a, b.) 
thalia, 604. 
themis, 601. 
—— thetis, 614. 
thoas, 605. 
tholus, 625. 
—— triacontadactylus, 555. 
817 
Actinocrinus tricornis, 468, 470. 
—— trijugis, 576. (Pl. LIV, figs. 4a, b.) 
trinodus, 467. 
—— tuberculosus, 573. 
turbinatus, 375. 
var. elegans, 376. 
umbrosus, 628. 
unicarinatus, 557. 
—— unicornis, 468. 
unispinus, 467. 
UINAMy, DDD. 
—— urneeformis, 447. 
validus, 582. 
ventricosus, 5938, 
var. cancellatus, 598. 
var. internodius, 593. 
var. reticulatus, 593. 
—— verneuilianus, 450. 
verrucosus, 558, 561. 
2a-C.) 
viaticus, 555. 
viminalis, 590. 
—— Wachsmuthi (White, 1862), 559. 
(White, 1880), 881. 
—— Whitet, 520, 5380. 
—— Whitfieldi, 522. 
Yandelli, 441. 
Actinoidea, 16. 
Actinometra, 99, 212. 
(Pl. LI, figs. 8a—c.) 
_— 
—— 
(Pl. LII, figs. 
| Ad-ambulacral or side-pieces, 86, 100. 
Agaricocrinus, 104, 862, 431, 481, 486, 586. 
americanus, 487, 488, 489. (Pl. XLII, 
figs. la—2b.) 
var. tuberosus, 489. 
6; XLII, fig. 4.) . 
—— bellatrema, 506. (Pl. XLI, figs. 4a-d.) 
var. major, 507. (Pl. XLI, fig. 5.) 
— Blairi, 503. 
brevis, 511. 
2a-e.) 
bullatus, 489, 493. (Pl. XLI, figs. 2a-d.) 
chouteauensis, 505. 
—— conicus, 501. (Pl. XXXIX, figs. 7, 8.) 
convexus, 508. (Pl. XXXVIII, figs. 
lle 10) 
Coreyi, 510. (Pl. XXXIX, figs. 1a, b.) 
corrugatus, 512. 
erassus, 499, 500. 
2a, b; XL, fig. 4.) 
decornis, 503. 
(Pl. XL, fig. 
—_———_ 
(Pl. XXXVITI, figs. 
(Pl. XXXTX, figs. 
—— dissimilis, 488. 
103 
