80 
PROCEEDINGS OF SOCIETIES. 
f452 Mangelia (Bela) septangularis, Montagu, v. 3. p. 458. 
453 Mangelia nana, Loven. v. 3. p. 461. 
f454 Mangelia teres, Forbes . v. 3. p. 462. 
455 Mangelia purpurea, Montagu, v. 3. p. 465. 
f456 Mangelia Leufroyi, Michaud, v. 3. p. 468. 
f457 Mangelia linearis, Montagu, v. 3. p. 470. 
f458 Mangelia gracilis, Montagu, v. 3. p. 473. 
f459 Mangelia nebula, Montagu, v. 3. p. 476. 
f460 Mangelia brachystoma, Philippi, v. 3. p. 480. 
f461 Mangelia striolata, Scacchi. v. 3. p. 483. 
f462 Mangelia costata, Pennant. (9) v. 3. p. 485. 
t463 Mangelia attenuata, Montagu, v. 3. p. 488. 
XXI. CYPRJEADJE. 
f464 Cyprsea Europsea, Montagu, v. 3. p. 495. 
f465 Ovula patula, Pennant, v. 3. p. 498. 
f466 Ovula (?) acuminata, Bruguiere. v. 3. p. 500. 
467 Marginella leevis, Donovan, v. 3. p. 502. 
GASTEROPODA OPISTHOBRANCHIATA. 
I. BULLIDAE. 
f468 Cylichna cylindracea, Pennant, v. 3. p. 508. 
469 Cylichna truncata ( Adams ?) Montagu, v. 3. p. 510. 
f470 Cylichna obtusa, Montagu, v. 3. p. 512. 
"j*471 Cylichna mammillata, Philippi, v. 3. p. 514. 
472 Cylichna nitidula, Loven. v. 3. p. 515. 
473 Cylichna conulus, Deshayes. v. 3. p. 517. 
474 Cylichna strigella, Loven. v. 3. p. 518. 
■j-475 Cylichna umbilicata, Montagu, v. 3. p. 519. 
|476 Amphisphyra hyalina, Turton. v. 3. p. 521. 
•J-477 Tornatella fasciata, Linneus. v. 3. p. 523. 
f478 Akera bullata, Muller, v. 3. p. 527. 
f479 Bulla hydatis, Linneus. v. 3. p. 530. 
f480 Bulla Cranchii, Leach, v. 3. p. 533. 
f481 Scaphander lignarius, Linneus. v. 3. p. 536. 
f482 Philine aperta, Linneus. v. 3. p. 539. 
483 Philine quadrata, Searles Wood. v. 3. p. 541. 
f484 Philine scabra, O. Muller, v. 3. p. 543. 
f485 Philine catena, Montagu, v. 3. p. 545. 
f486 Philine punctata, Clark, v. 3. p. 547. 
|487 Philine pruinosa, Clark, v. 3. p. 549. 
II. APLYSIADiE. 
f488 Aplysia hybrida. v. 3. p. 554. 
III. PLEUROBRANCHIDJE, 
f489 Pleurobranchus membranaceus, Montagu, v. 3. p. 558. 
f490 Pleurobranchus plumula, Montagu, v. 3. p. 559. 
IV. PHYLLIDIDJE. 
491 Diphyllida lineata, Otto. 
