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MOLLUSCA AND SHELLS. . 13 
Fig. 468. SirHonarta NoRMALIS, exterior, 468 a, lateral, 
and 
468 b, interior views of the shell.—p. 359. 
PLATE. $i 
Fig. 469. FissureLia PICTA, lateral view of the animal, with 
an outline of the shell; 469 @, plantar view of the animal.—p, 
O67. 
Fig. 470. Fissurena 
Chili. 
Fig. 471. Fissuretta cratitta, the back of the shell; 471 a, 
, undetermined ; from the coast of 
lateral, and 471 8, interior views of the shell.—p. 367. 
Fiz. 472. FissurELLA VERNA, dorsal, and 472 a, interior views 
of the shell; 472, lateral view; 472 e, dorsal view of the small 
variety.—p. 566. 
Fig. 473. FissurELLA occwwEns, exterior, 473 a, interior, and 
473 6, lateral views of the shell.—p. 364. 
Fig. 474. FissureLLa cruciata, dorsal, 474 a, interior, and 
474 6, lateral views of the shell; 474 c¢, details of sculpture, 
magnified.—p. 365. 
Fig. 475. RimuLa cucuLiata, dorsal, 475 a, interior, and 475 b, 
lateral views of the shell; 475 ¢, details of sculpture, magnified. 
¢ 
—p. 568. 
Le ho) 
Fig. 476. Rimuna GALEara, dorsal, 476 a, interior, and 476 8, 
lateral views of the shell; 476 ¢, details of sculpture, magnified. 
—p. 369. 
Fig. 477. Riwuna conica, ventral view of the animal, magni- 
fied ; 477 a, superior, and 477 0, inferior views of the head of the 
animal, magnified ; 477 ¢, the shell, natural size, ventral view of | 
the same ; 477 d, sculpture, enlarged.—p. 370. 
Fig. 478. RimuLa coGNata, dorsal view of the shell; 478 a, 
ventral view of the animal; 478 0, lateral view of the shell and 
_ lateral views of the shell, enlarged; 495 b, natural size. 
animal; 478 c¢, head and tentacles of the animal, in outline, en- | 
larged.—p. 371. 
PLA TH. 32: 
Fig. 480. CrepipULA NUMMARIA, superior, 480 a, inferior, and 
480 b, lateral views of the shell_—p. 377. 
Fig. 481. CrepipuLA LINGULATA, exterior, 481 a, interior, and 
481 6, lateral views of the shell; 481 c¢, details of sculpture, mag- 
nified.—p. 376. 
Fig. 482. CREPIDULA ROSTRIFORMIS, exterior, 482 a, interior, and 
482 b, lateral views of the shell.—p. 575. 
Fig. 485. LeproconcHUS MADREPORARUM, animal, with the shell, 
seen from beneath; 485 a, aperture of the shell, normal form ; 
483 6, and 483 ¢, outlines of a variety, such as that in which the | 
animal is represented.—p. 378. 
Fig. 484. CALYPTR&A FASTIGIATA, dorsal, 484 a, basal, and 484 6, 
lateral views of the shell.—p. 379. 
Fig. 485. CaLyptraA PILEOLUS, D’Orb., lateral view of the shell 
and animal. 
Fig. 486. CApuLUS SAGITTIFER, superior, 486 a, inferior, and 
486 b, lateral views of the shell, enlarged ; 486 c, details of sculp- 
ture, magnified ; 486d, natural size.—p. 383. 
Fig. 487. CALYPTRHA CHLORINA, superior, 487 a, inferior, and 
487 b, lateral views of the shell; 487 c¢, details of sculpture, mag- 
nified ; 487 d, the cup, enlarged.—p. 380. 
Fig. 488. CALYPTRHA RADIOSA, exterior, 488 a, interior, and | 
488 b, lateral views of the shell; 488 c, details of sculpture, 
magnified.—p. 381. ; 
Fig. 489. Prrgopsis crystaLiina, outer, 489 a, inner, and 489 3, 
lateral views of the shell. p. 382. 
Fig. 490. Hipronix mpricata, outer, 490 a, inner, and 490 8, 
profile views of the shell; 490, details of sculpture, magnified. 
—p. 379. 
Fig. 491. Emarcinuta runcina, dorsal, 491 a, interior, and 
4916, profile views of the shell; 491 c, details of sculpture, 
magnified.—p. 374. 
Fig. 492. EmarGinuLa ossra, dorsal, 492 a, interior, and 492 3, 
profile views of the shell; 492, details of sculpture, enlarged.— 
p. 373. 
Fig. 493. EmMARGINULA ASPERA, exterior, 493 a, interior, and 
493 6, lateral views of the shell; 493, details of sculpture, en- 
larged.—p. 372. 
Fig. 494. EMARGINULA CINEREA, exterior, 494 a, interior, and 
494 6, lateral views of the shell; 494, details of sculpture, en- 
larged.—p. 373. 
Fig. 495, AxcyLus apuncus, dorsal, 495°, interior, and 495 a, 
p. 126. 
Fig. 496. Macrra pesinis, engraving omitted. 
Fig. 497. PuoLas patuLA, engraving omitted. 
Ph A TE 8S, 
Fig. 498. Mya pracrsa, lateral, and 498 a, dorsal views of the 
shell, 498 6, view of the interior.—p. 384. 
Fig. 499. PANOPMA ANTARCTICA, engraving omitted. 
Fig. 600. PAnpora cistuLa, the shell, expanded, with the 
hinge ; 500 a, dorsal edge of the shell; 500 8, the flat valve.—p. 
396. 
Fig. 501. Soren sicantvs, lateral, and 501 a, dorsal views of the 
shell; 501 4, interior, with the hinge.—p. 387. 
Fig. 502. SoLEN scALprum, lateral, and 502 a, dorsal views of 
the shell; 502 4, the hinge, and interior.—p. 388. 
Fig. 503. Macrra pELuTA, lateral, and 503 a, dorsal views: of 
the shell; 503 6, the hinge, and interior.—p. 391. 
Fig. 504. Macrra cunro.a, lateral, and 504 a, dorsal views of 
p. 390. 
Fig. 505. Macrra marcipa, lateral, and 505 a, dorsal views of 
the shell; 504 0, the interior, and hinge. 
the shell; 505 , the interior, and hinge.—p. 392. 
PLATE 34. 
Fig. 506. Mactra FALCATA, lateral, and 506 a, dorsal views of 
the shell; 506 4, interior, with the hinge.—p. 393. 
Fig. 507, PANop#A GENEROSA, lateral, and 507 a, dorsal views 
of the shell; 507 4, outline of the hinge margin.—p. 385. 
Fig. 508. Lurrarta capax [L. maxima, Mid lend., name pre- 
occupied], lateral, and 508 a, dorsal views of the shell; 508 8, 
the hinge.—p. 396. 
PLATE 34. 
Fig. 509. OsTEopESMA BRACTEATUM, lateral, and 509 a, dorsal 
views of the shell; 509 6, inside of the shell.—p. 397. 
Fig. 510. OstzopesMA Brasiiiense, lateral, 510 a, internal, and 
510 4, dorsal views of the shell.—p. 398. 
Fig. 511. MEsopesMA MuNDUM, lateral, and 511 a, dorsal views 
of the shell; 511, the hinge.—p. 400. 
Fig. 512, AMPHIDESMA CROCEUM, exterior, and 512 a, interior of 
the shell; 512 6, dorsal view.—p. 399. 
