153 



DESCRIPTIONS OF NEW SPECIES OF MARINE SHELLS FROM 

 THE NEIGHBOURHOOD OF HONG-KONG. 



By G. B. SowEEBY, F.L.S., etc. 



Sead April 13th and May llth, 1894. 



PLATE XII. 



Amongst a large number of small shells dredged some years ago by 

 Surgeon-General R. Hungerford at the Port of the Harbour of Hong- 

 kong, at depths varying from forty to sixty feet, the following appear 

 to be new. 



Family COLUMBELLID^. 



1. CoLTTMBELLA (Amtcla) planaxifoemis, n.sp. PL XII. Fig. 1. 

 Testa acuminato-ovata, solidula, laevis, fulva, fusco conspicue cingu- 



lata; spira mediocriter elongata, acuta; anfractus 8, convexiusculi, 

 lineis fuscis 1-2 spiraliter cincti ; anfractus ultimus subventri- 

 cosus, infra peripheriam balteo fusco pictus, inferne contractus vix 

 productus, spiraliter sulcatus ; lamina columellaris tenuis, leviter bi- 

 marginata ; apertura latiuscula, supra et infra angustata ; labrum 

 acutiusculum, hand reflexum, intus plicis (circ. 8) brevibus denti- 

 formibus instructum. Long. 10, diam. 4'50 mm. 



A stout, smooth shell, marked with conspicuous brown linear bands. 

 It calls to mind some of the smooth species of the genus Planaxis. 



2. CoLtmBELLA (Miteella) yenulaxa, n sp. PL XII. Fig. 4. 

 Testa fusiformis, Igevis, polita, fulva, maculis parvis nigro-fuscis 



et albidis cingulata, strigis fulvo-fuscis irregulariter undulatis veni- 

 formibus longitudinaliter picta ; spira elongata, acuminata, ad 

 apicem acutissima ; anfractus 9, convexiusculi, sutura leviter impressa ; 

 anfractus ultimus spiram paulo superans, infi-a peripheriam contractus, 

 delude brevirostratus ; rostrum spiraliter liratum; apertura angusti- 

 uscula, leviter sinuosa ; columella contorta ; labrum rectiusculum, 

 antice incurvatum, postice levissime sinuatum, extus incrassatum, 

 intus liratum, ad marginem acutum. Long. 9, diam. 3-50 mm. 



The nearest ally is C. hella, Reeve ; but the present species is 

 narrower in form, and has no angle at the periphery. The specimens 

 show considerable variation in colouring. One is nearly white, with 

 large square spots, and destitute of the vein-like streaks ;• another has 

 only white flake-like markings in place of the brown spots. In the 

 type the brown spots are narrow and form an interrupted line near the 

 top of the whorl ; there is another row of smaller spots near the base, 

 and the colouration otherwise consists of fine vein-like longitudinal 

 streaks. 



3. COLTJMBELLA (MiTEELLA ?) PUPA, U.Sp. PL XII. Fig. 2. 



Testa sub-cylindracea, laeris, nitons, albida, dilute fusco bi-fasciata ; 

 spira longa, obtusiuscula ; anfractus 6, planato-convexi ; sutura im- 



