82 HELICID^. 



important difference. The aperture may perhaps be a 

 little narrower, posteriorly, by the rolling in of the lip. 

 It is very similar to S. obhnga of Europe, but its out- 

 lines being more curved it is consequently less strictly 

 conical. Its principal claim to be regarded as a new spe- 

 cies is that it comes from a region whence no other shell 

 common to the Atlantic slope has yet been brought. — [g. j 



9. SUCCINEA CONCORDIALIS, Gould. 



Plate LXVTI. a. Figuke 2. 



Testa tenui, lucida, oblique ovata, acuminata, reflexa, 

 cerea et ad apicem rubicunda, leviter striata et lineis obscu- 

 ris volventibus insculpta : anfr. 3 perobliquis, supernis par- 

 vulis, tumidis ; sutura profunda : apertura ovata, trientes 

 dufe longitudinis testee sequante, basi rotundata ; columella 

 arcuata, absque plica, paululum arrecta ; intus micante. 



STNONTMS AND REFERENCES. 



SucetTiea concordialis, Gould, Proc. Bost. Soc. Nat. Hist., June, 1S48. 

 DESCRIPTION. 



Shell, obliquely ovate, elongate, reflexed, apex acute, 

 thin but firm, transparent, shining, feebly striated length- 

 wise and spu'ally, color pale honey-yellow, with the tip 

 ruddy ; whorls three and somewhat more, very oblique, 

 the two .uppermost very small, outer whorl somewhat 

 compressed above the middle ; suture well marked ; 

 aperture ample, not less than two-thirds the length of the 

 shell, well rounded at base ; columella regularly arcua- 



