354. Lacuna neritoidea, Gould. 



355. Littorina litorea, Lin. 



356. Littorina palliata, Say. 



357. Littorina rudis, Mont. 



358. Littorina irrorata, Say. 



359. Scalaria Humphreysii, Kien. 



360. Scalaria turbinata, Con. 



361. Scalaria lineata, Sy. 



362. Scalaria multistriata, Say. 



363. Scalaria novangliae, Couth. 



364. Scalaria groenlandica, Perry. 



365. Acirsa borealis, Beck. 



366. Solarium granulatum, Lam. 



367. Vermetus radicula, Stm. 



368. Caecum pulchellum, Stm. 



369. Turritella erosa, Couth. 



370. Turritella reticulata, Migh. 



371. Turritella costulata, Migh. 



372. Turritella acicula, Stm. 



373. Aporrhais occidentalis, .Z?ec&. 



374. Bittium arcticum, Moerch. 



375. Bittium nigrum, Tott. 



376. Bittium Greenii, C. B. Ad. 



377. Triforis nigrocinctus, C. B. Ad. 



378. Odostomia producta, C. B. Ad. 



379. Odostomia fusca, C. B. Ad. 



380. Odostomia dealbata, Stm. 



381. Odostomia modesta, Stm. 



382. Odostomia bisuturalis, Say. 



383. Odostomia trifida, Tott. 



384. Odostomia seminuda, C. B. Ad. 



385. Odostomia impressa, Say. 



386. Turbonilla interrupta, Tott. 



387. Turbonilla nivea, Stm. 



388. Menestho albula, Afo //. 



389. Obeliscus crenulatus, Holmes. 



390. Eulima conoidea, A . # 5. 



391. Eulima oleacea, / # S. 



392. Velutina zonata, GWrf. 



393. Velutina haliotoides, Mull. 



394. Velutina lanigera, Moll. 



395. Velutina flexilis, Mont. 



396. Marsenina micromphala,7?e?v//&amp;lt;. 



397. Marsenina groenlandica, M. 



398. Onchidiopsis groenlandica, B. 



399. Catinus perspectivus, Say. 



400. Natica .pusilla, Say. 



401. Natica clausa, 5ou;. 



402. Lunatia heros, Say. 



403. Lunatia triseriata, Say. 



404. Lunatia Gouldii, Phil. 



405. Lunatia groenlandica, Moll. 



406. Mamma? immaculata, Tott. 



407. Mamma ? nana, Jfetff. 



408. Neverita duplicata, Say. 



409. Bulbus flavus, Gould. 



410. Amauropsis helicoides, Johnst. 



411. Amaura Candida, A foil. 



412. Volva uniplicata, /Sow;. 



413. Marginella roscida, Redf. 



414. Mitra groenlandica, Moll. 



415. Voluta junonia, Chemn. 



416. Pleurotoma plicata, C. B. Ad. 



417. Pleurotoma cerina, K. $- S. 



418. Pleurotoma bicarinata, Couth. 



419. Mangelia rubella, K. fr S. 



420. Mangelia filiformis, Holmes. 



421. Bela exarata, Moll. 



422. Bela nobilis, Moll. 



423. Bela turricula, J/on*. 



424. Bela Woodiana, Moll. 



425. Bela harpularia, Couth. 



426. Bela violacea, Migh. 



427. Bela livida, Moll. 



428. Bela decussata, CWA. 



429. Bela Pingelii, Moll. 



430. Bela cancellata, Migh. 



431. Bela pleurotomaria, Couth. 



432. Bela Vahlii, Moll. 



\ 433. Bela elegans, Moll. 



434. Oliva litterata, Za?rc. 



435. Olivella mutica, Say. 



436. Columbella ornata, Rav. 



437. Columbella avara, Say. 



438. Columbella rosacea, Gould. 



439. Columbella lunata, Say* 



440. Columbella dissimilis, Stm. 



441. Dolium galea, Lin. 



442. Semicassis granulosa, Brug. 



443. Cassis cameo, Stm. 



444. Pedicularia decussata, Gould. 



445. Purpura lapillus, Z/in. 



446. Purpura floridana, Con. 



447. Nassa obsoleta, Say. ^ 



448. Nassa trivittata, Say. 



449. Nassa acuta, Say. 



450. Nassa unicincta, Say. 



451. Nassa vibex, &%. 



452. Cerithiopsis terebralis, C. B. A. 



453. Cerithiopsis Emersonii, C. B.J.. 



454. Acus dislocatus, Say. 



455. Acus concavus, Say. 



456. Buccinum undatum, Lin. 



457. Buccinum cyaneum, Brug. 



458. Buccinum ciliatum, 0. Fabr. 



459. Buccinum glaciale, Zin. 



460. Buccinum Hancocki, Moerch. 



461. Buccinum Donovani, Gray. 



462. Buccinum undulatum, Moll. 



463. Buccinum scalariforme, Moll. 

 (c) 



