L .E D A. 



Species 10. (Mas. lirit.) 



L^DA TENUicosTATA. Lmd. lestd cuneiformi, ohlongd, 

 rostratd, angustald, latere antico hrevi, margine 

 dorsali kevlgato, medio costetlato marghie ventrali 

 leviler arcuato ; latere poslico eloiigato, angustato, 

 ared dorsali depressd, hrvigald, termino rostralo, 

 iruncato. 



The fini;-i'.ii!Iikd L.eda. Slitll cuiicitbnn, ublouj:, 

 rostrated, narrowed, anterior side short, -with 

 smooth dorsal margin ; middle costellated 

 ventral margin slightly arched ; posterior side 

 elongated, narrow, with depressed smooth dorsal 

 margin, end rostrated, truncate. 



CouTHOT. Bod. Journ. Nat. Hist. vol. ii. G4, pi. 18, 

 f. Ifi. 



Nuciila minuta, Goidd (not Fabricius). 



Uah. N. America. 



Resembling Lceda Ft-rnnla in form, but tinely ribbed 

 in the central area. 



Species 12. (Mi 



.■,t.) 



Species 11. (Fig. a, b, Mus. Brit.) 



L^DA MisuTA. Lced. tesid hrevi, crafsd, ventricosd, 

 epidermide crasso obscure olivaceo indutd, tenuiter 

 liratd ; latere antico hreviusculo, liris magis co»j- 

 spicuis ; latere poslico suhrostrato, truncato, ared 

 dorsali latd, plana, circumscriptd. 



The minute L.i:da. Shell short, thick, ventricose, 

 covered with a thick dull olive epidermis, finely 

 ridged ; anterior side rather short with the ridges 

 more prominent ; posterior side somewhat beaked, 

 truncated, dorsal area wide, tlat, circuniscrlljed. 



MuLLEi;. Zool. Dauic. 298.5. 



3Iya Greenlandica, Chemn. 



Nucula parva, Sows. 



Nucula complanala, Muller. 



Hab. Greenland. 



L^DA Patagonica. Lced. testd elongato-angustatd, ros- 

 tratd, arcuatd, valde compressd, pallide subjtavido- 

 rosed, longittulinaliter striatd, subcequildlerali ; 

 latere antico rotundo-acuminato, margine dorsali 

 elevato : latere postico rostrato, ad terniinum oblique 

 truncato, margine dorsali arcualim deprenso : 

 margine ventrali cequaliter arcuato. 



The Patagonian L^eda. Shell elongately-narrowed, 

 beaked, arched, much compressed, pale yellowisli 

 rose, longitudinally striated, nearly equilateral ; 

 anterior side roundly acuminated, with dorsal 

 margin elevated, posterior side beaked, with dorsal 

 margin depressed in a curve, ventral margin 

 equally arched. 



D'OuBiGNY. Amer. Mcrid., p. 544, pi. 82. 



Rab. West Indies. 



I cannot concur with Mr. ilanley in treating the 



very different looking shells figured in Thesaurus Con- 



chyliorum under this name, as the same species. I have 



therefore separated his Fig. 51-2, under the title of Z. 



planulata. 



Species 13. (Mus. Brit.) 



LJEVk DECORA. Zcerf. testd solidd, subcomj^ressd, sub- 

 anguste ohlongo-rostratd, albidd, liris tenuibus 

 concentricis sculpid ; latere antico hreviusculo, 

 liris magis elevatis ; latere antico rostrato, hiangu- 

 lato, ad terminum acuminatim truncato, margine 

 dorsali crenato, ared depressd planulatd mar- 

 ginato ; margine ventrali medio rectiusculo. 



The decorous L^da. Shell solid, subcompressed, 

 rather narrowly oblong-rostrated ; rather white, 

 sculptured with fine concentric ridges; anterior 

 side beaked, biangulated, acuminately truncated 



September, 1871. 



