SOWERBY : ON NEW SPECIES OF MOLLtTSCA. 17 



TJeosalpinx ■Walkehi, n.sp. PL I, Fig. 1. 



Testa fusiformis, pallide straminea ; spira acuminata, turrita, 

 acutiuscula ; anfractus 7 ^ , primi 2 laeves, rotundati, sequentes convexi, 

 biangulati, spiraliter tenuiter lirati, costis longitudinalibus latiusculis 

 paruni elevatis instructi ; sutura leviter callosa ; anfractus ultimus 

 spiram paulo superans, undique liris angustis numerosis ingequalibus 

 leviter scabrosis munitus, obtuse angulatus, supra angulum declivis, 

 vix concavus, infra contractus, ad basim breviter rostratus ; apertura 

 oblongo - ovata, intus denticulata, antice sub -late canaliculata ; 

 columella rectiuscula, ad basim leviter recurva; labrum arcuatum, 

 sinu postico rotunde excavate, vix prof undo. Long. 11, diam. 5 mm. 



H(ib.—l!i.W. Australia (Walker). 



A small, narrow, closely ridged shell, with somewhat widely separated 

 longitudinal ribs or plicae, and characterised by a distinct siuus at the 

 posterior end of the peristome. 



SiSTEUM CHRYSALIS, U.Sp. PL I, Fig. 5. 



Testa oblongo-ovata, nigra, umbilicata; spira conica, mediocriter 

 elata ; anfractus 5, planato-declives ; penultimus biseriatim tubercu- 

 latus, ultimus oblongus, f longitudinis testae fere aequans, liris 

 obtusis irregulariter squamoso-tuberculatis alternatim latis et angustis 

 instructus, ad basim acutus ; umbilicus latiusculus ; apertura oblonga, 

 intus cyaneo-albida, quadri-tuberculata ; peristoma continuum, ad 

 marginem acutum, plicatum, nigrum. Long. 27, diam. 15 mm. 



JIah. — New Caledonia (Bouge). 



The peculiar chrysalid form of this shell distinguishes it from 

 S. tuberculatum, Blainv., and its tubercles are much less prominent, 

 being very irregular and for the most part not at all clearly defined. 

 The anterior end of the shell is rather peculiarly pointed. Several 

 specimens, presenting but little variation, were brought from New 

 Caledonia by Monsieur Bouge. 



Natica Boijgei, n.sp. PL I, Fig. 3. 



Testa ovato-pyriformis, imperforata, laevis, nitens, alba, zona lata 

 inteiTupta f usco variegata picta ; spira breviter conica ; anfractus 3, 

 convexi ; ultimus oblique ovalis ; apertura semicircularis, intus laevis, 

 f usco picturata ; columella callosa, albo-nitens, eff usa ; labrum 'tenue. 

 Operculum testaceum, albo-nitens, ad marginem bisulcatum. Long. 8, 

 lat. 7 "5 mm. 



Hah. — New Caledonia (Bouge). 



Excepting for the pretty variegated markings arranged on the broad 

 median zone, this shell closely resembles in miniature the large common 

 Polimces mamilla. It does not, however, belong to that genus or 

 section, as shown by the operculum, which is testaceous as in typical 

 N'atic(B. 



Amalthea Coxi, n.sp. PL I, Figs. 9-11.' 

 Testa elato-conica vel corniformis, irregulariter contorta, tenuis, 

 luteo-albida, transversim confertissime anguste lirata, radiutim extus 



VOL. VIII. — MARCH, 1908. ^ 



