104 Mr. E. A. Smith on Gasteropoda 



convexiusculi, longitudinaliter subdistanter plicati, et liris spira- 

 libus tenuibus costis interruptis ubique cincti, anfr. ultimus versus 

 labrum pallidus ; apertura ovata, superne leviter acuminata, longi- 

 tudinis totius -| aequans ; columella arcuata, aliquanto reflexa. 

 Long. 4 mill., diam. fere 2. 



Hah. Avomori Bay, north of Niphon, in 7 fathoms. 



The plications are about fifteen on a whorl, reaching from 

 suture to suture in the upper whorls, and only to the middle 

 of the last, and in some specimens they are entirely absent 

 from it. 



57. Littorina grandisj Middendorff, Malacozool. Ross. ii. p. 57. 

 Hah. Japan. 



58. Littorina hrevicula, Phil. Abbildungen, ii. pi. iii. f. 10 ; 

 Conchol. Icon. x. f. 51a, h. 



Littorina balteata, Reeve, I.e. f. 71 a, b. 



Littorina Souverbiana, Crosse, Journ. de Conch. 1802, x. p. 53, pi. i. f. 0, 7. 



Hah. Endermo, Yesso. 



Dr. Lischke, in his ' Japanische Meeres-Conchylien,' gives 

 the above synonymy. After comparing the actual types of 

 the two latter species in the National Collection with specimens 

 of hrevicula, I do not hesitate to say that Souverbiana is iden- 

 tical with the latter, and halteata but a slight variety of it. 



59. Planaxis sidcatus, Born. 



Buccinum sulcatum, Born, Mus. Vindobon. p. 258, pi. 10. f. 5, 6. 

 Planaxis buccinoides, Deshayes, Anim. s. Vert. ed. 2, ix. p. 237. 

 Var.= Planaxis sulcata, Lamarck, /. c. p. 23G. 

 Vsx.— Buccinum pyramidale, Gmelin, Syst. Nat. p. 3488. 

 \av.= Planaxis undulata, Lamarck, I. c. p. 236. 



Hah. Ooshima, on the shore. 



60. Lacuna unicarinata } sp. nov. 



Testa parva, umbilicata, cornea ; airfractus 3, laeves, primi duo parvi 

 convexi, ultimus superne convexus, medio carina prominenti crassa 

 cinctus, infra carinam aliquanto planatus ; umbilicus mediocris, 

 carina basi colurnelhE juueta circumdatus ; columella tenuis, 

 albida, paululum reflexa ; apertura ovatiuscula. 



Long. 3 mill., diam. vix 2. 



Hah. On a littoral species of Sargassum, North Japan. 



The whorls are smooth, with the exception of the very fine 

 lines of growth. The keel encircling the body-whorl and that 

 around the umbilical region are of a brownish colour. 



