001 



137. Bulla catena (pi. cxxv. f. 163). Bullrca catena, 

 Mowtag., Test. Brit. pi. vii. f. 7. B. catenulifera, Macgill. B. 

 scabra, Mull. B. granulosa, Sars. B. zonata. 



B. testa oblonga, tenuissima, albida, nitida, striis transversis 

 catenatis notata ; latere columellari arcuato ; apicc subobtuso, vix 

 umbilicato. 



Shell ovate, oblong, very thin, white, pellucid, shining, marked 

 with chain-like strife ; columellar margin arcuated ; apex rather 

 obtuse, shghtly umbilicated. 



Animal on the upper part yellowish-white ; head and lobes of 

 the foot sprinkled with minute red-brown points ; gizzard with 

 testaceous appendages. 



British Islands. Mm. Cuming. 



13S. Bulla scutulum (pi. cxxv. f. 164<j. Philine scutulum, 

 Loven, Ind. Moll. Scand. p. 9. 



B. testa quadrato-ovali, antice subtruncata, alba, subpellucida, 

 fasciis binis, incrassatis, striis excavato-punctatis, alternis same 

 tcnuioribus, sculpta ; margine integro ; apice minuto, rimato, vix 

 umbilicato, rotundato ; labro postice parum producto, dein leviter 

 impresso, subrecto ; margine columellari sinuato-arcuato ; apertura 

 patentissima. 



Shell quadrately oval, anteriorly subtrmicated, white, subpellucid, 

 engraved with two thickened bands, with excavately punctate 

 stria?, the alternate often the finest ; margin entire ; apex minute, 

 rimate, scarcely umbilicated, rounded ; outer lip posteriorly a little 

 produced, then slightly impressed and rather straight ; columellar 

 margin sinuately arched ; aperture very wide. 



Greenland. Mus. Cuming. 



139. Bulla Coreanica (pi. cxxv. f. 166), Adams. 



B. testa subquadrato-ovali ; margine externo subrecto, angulo 

 ejus supero truncato ; spira elevatiuscula. 



Shell subquadrately oval ; outer margin rather straight, its 

 upper angle truncated; spire rather elevated. 



Korean Archipelago ; mud flats. A. Adams. 



Sub-genus Chelidonura. 



140. Bulla hirundinina (pi. cxxv. f. 167, 168), Quo//, 

 Voy. de l'Astr. pi. xxvi. f. 20-25. 



B. testa cyanea, vertice capitis dorsique, medio filamentorum 



