558 MB. E. A. SMITH ON MARINE SHELLS 



84. T. (Clanculus) atropurpureus, Gould. — Tiochus (Mono- 

 donta) atropurpureus, Gould, Boston Soc. Nat, Hist. Proc. 1849 ; 

 Otia Conchol. p. 59 ; Atlas to Wilkes United-States Eocplor. Exped. 

 p!. xiii. f. 224, «-e. 



Hub. San Christoval, Solomon Islands {Brazier) ; Tutuila, Navigators' 

 Islands (Gould). 



The dentate mai'gin of the umbilicus is very characteristic in 

 this species ; it is white, and the large tooth on the upper side is 

 very constant. The interstices between the series of granules are 

 generally of a darker colour than the granules themselves ; and 

 sometimes the apex is of a rose-colour. 



85. Trochus (Gibbula) supragranosus, sp. nov. PI. XXX. fig. 15. 

 Testa solida, depresse globosa, anguste sed profunde perforata, pallida, 



strigis latis radiantibus aliquanto interruptis fuscis vel rosaceo-fuscis 

 ornata; anfractus 5 couvexiusculi, sutura profundiuscula sejuncti, 

 liris spiralibus versus apicem granosis (in anfr. penult. 4-5) cincti ; 

 anfr. ultimus medio rotundatus inferne convexiusculus, liris circiter 

 20, irregulariter prisesertim prope medium in paribus, ornatus, pauiu- 

 lum pone labrum macula magna fusca vel roseo-fusea notatus; apertnra 

 parva, circularis, intus argenteo-margaritacea, prope marginem labri 

 alba, et (in exemplis adultis), tenuiter iirata; labrum crassum mar- 

 gine acuto ; columella arcuata, superne levissime reflexa. Alt. 5 

 mill., diam. maxima 5, minima 4^. 

 Hub. San Ohristoval, Solomon Islands. 



One of the chief peculiarities of this species is that the spiral 

 lirss on the last whorl near the middle run in pairs. The lirations 

 on the spire become granulous as the apes is approached. The 

 brown or pinkish-brown stripes which flow downwards from the 

 suture are interrupted somewhat by the transverse sulci, and 

 thus appear as oblong dots on the lirae. On the back of the 

 body -whorl, not far from the labrum, is a large brown or pinkish- 

 brown stain. 



86. T. (Oanthiridusj HuTTONii, sp. nov. PI. XXX. fig. 20. 



Testa breviter conica, obtecte perforata, cseruleo-nigra vel purpureo- 

 nigra, ad apicem detritum albida ; anfractus 5-6, convexiusculi, 

 striis spiialibus circiter 7-8 incrementique lineis sculpti ; anfr. ulti- 

 mus ad peripheriam obtuse angulatus, inferne convexiusculus, in 

 regione umbilicali levissime impressus ; apertura subcirculari-qua- 

 drata, intus iridescens, tenuiter sulcata ; labrum intus paululum 

 incrassatum, albescens, anguste nigro limbatum ; columella parum 

 arcuata, incrassata, perforationem tegens. Alt. 14| mill., diam. 

 10^. Exempli minoris alt. 9 mill., diam. 7- 



Hab. New Zealand. 



