487 



4. Description of a New Conchiferous Mollusc of the 

 Genus Pandora. By Arthur Adams. 



Pandora wardiana, A. Adams. 



P. testa maxima, solida, transversim ovata, valde incequilaterali, 

 postice rotundata, antice subangidata : valvula dextra concava, 

 lineis concentricis regularibus inter miptis et sulcis fuscis radian- 

 tibus subdistantibus decussata : valvula sinistra convexa, sor- 

 dide alba, lineis concentricis irregularibus instinct a, et sulco 

 obliquo ab umbone usque ad sinum in marginem ventralem pro- 

 ducto. 



Hab. In littoribus Mantchuriee. 



Shell large, solid, transversely oval, very inequilateral, rounded 

 posteriorly, somewhat angulated anteriorly. Right flat valve with 

 regular concentric fine interrupted lines, and marked with brown, 

 radiated, rather distant grooves. Left convex valve chalky white, 

 with irregular concentric lines of growth, and with an oblique furrow 

 proceeding from the beak and ending in the sinuosity at the fore 

 part of the ventral margin. 



Hab. Coast of Mantchuria, 20 fathoms ; Sunday Island. 



I have dedicated this fine species to Commander J. Ward, of 

 H.M.S. 'Actseon/ to whose assistance and encouragement science 

 will be indebted for any results that may be obtained during our 

 cruises along the coasts of Korea, Mantchuria, and Japan. 



5. Systematic List of the Species of Dolium restricted. 

 By Sylvanus Hanley. 



The magnitude to which the Doha attain has discouraged private 

 collectors from their acquisition, so that the amount of variation 

 permitted to each species, and the differences of aspect between 

 young, mature, and aged individuals, have not been so satisfactorily 

 determined as the writer could have wished. Judging, however, 

 from D. variegatum, of which fine series are present in the National 

 and Cumingian Museums, shape would seem of less importance than 

 colouring ; yet in D. cepa, the colouring appears diversified, and the 

 shape comparatively invariable. It is hoped that the following list 

 of species may clear up the somewhat confused synonymy, and 

 attract attention to a genus which has scarcely experienced the ordi- 

 nary amount of critical investigation. B. pomum and Di ring ens, 

 which constitute the subgenus Malea, have not been included in our 

 list. 



Dolium galea (Linnseus). 



Buccinum galea, Linn. Syst. Nat. ; Gmelin, Syst. Nat. p. 3469 ; 

 Bruguiere, Hist. Vers, p. 244 (? vars.) ; Bosc, Coquilles ; Dillw. Desc. 

 Cat. p. 582, probably. 



Dolium costatum magnwn, Martini, iii. f. 1070. 



