FLATK XIX. 



Nassa, 

 Ffg. 

 1. N. RETICULATA, Linn. {Bnccinum.)-^N, piiUm, Tritoniumr, -^"Bvii, 



and Eu. co, generally. Littoral, Cc. 

 3. N. INCRASSATA, MiiUer, [Bueoinum.) — N, and B. minutmn, macula, 

 asperulum, etc, — -Brit, shores generally, to 50 fath., gravel, C. 



3. N. PYGM^A, Larah. [Ranella.]- — B. tuberculatum, Tritonia varicosa, 



etc. — S. Brit, co., S. Eu., 4 fath, to deep water, 0, Small, with 

 wliite varices on the body, 



Mangelia, 



4. M. TDRRicuLATA, Mont, [Murex.) — Beta, Fums, mid Pleurotoma 



angulatus, etc. — Brit, co, generally, 3 to 100 fath., N. Eu., C, 

 Whorls flat above. 



5. M. Tbevelliana, Turt. — Pleiirotoma, Bela, and 31. reticulata, de. 



cusaata, and lewcostoma. — Northumberland, Aberdeen, Zetland, 

 etc., 15 to 40 fath., E, Whorls with angular slope above. 



6. M. ROFA, Mont. {Murex,) — F., M., and B, chordula, Ulideana 



(var,), etc, — Brit, co, generaUy, Mc, 



7. M, TERES, Forbes, [Pleurotoma.) — P. boreale. — Various loc, 15 to 



50 fath, S, Eu„ Mr, Carinated, aperture deeply notched, 



8. M. PURPUREA, Mont. {Murex.) — Fusws and Pleu, p., Philherti ver- 



sicolor and variegatum. — Brit, co, gen,, 3 to 60 fath., C, S, Eu, 



9. M. CANCELLATA, Sowerli/ {Fusus.) — M. purpurea var,, F. asperri- 



mus. — Cornwall, Cork, E. Sharply sculptured, 



10. M. RETicuLATUM, ^)W47?, {Pleuroto7na.)^-M. cancellatav&T. — Shet- 



land, Guernsey, Er. Sculpture between 8 and 9 ; inner lip not 

 thickened. 



11. M. Leufroti, Michaitd, {Pleurotoma.) — P., F,, and M. infata, 



Boothii. — Arran, Orkneys, Guernsey, etc. ; S. Eu., 5 to 50 fath., 

 Mc. 

 13. M. LINEARIS, Mo7it. {Murex.) — M., PI,, Fus, elegans, coneinna, 

 etc. — Brit. co. generally, sand and shells, 1 to 80 fath., G, 



13. M. SCABRA, Jeffreys, {Pleiir,) — M. linearis var. — Guernsey, Ply- 



mouth, E. 



14. M. NEBULA, Mont. {Murex.) — M,,P., and F, Bertrandi, varians, and 



pyramidatus, — Various places and depths, N. and S. Eu., C. 



15. M. L5;viGATA, Phil, {Pleu.) — M. nebula var. — South Brit., S. Eu. 



Small, fusiform, shiny, banded. 



16. M. GuiNNiANA, Phil. {Pleu.) — M, nebula v«t, — Tenby, etc., Mr. 



S. Eu. Whorls longer than No. 14. 



17. M, BRACH'YSTOiiA, Phil. {Pleu.) — M. tiarula and Clavatnla b.— 



Brit. CO. gen,, Mr. Turreted ; ribs crossed by raised lines. 



