Zoological Society. 151 



vertice acuminata, acuta, subcentrali ; aperturee margine valdk 

 crenulato, sinu aubquadrato, intus in canalem producta. 



Hob. Australia. Mus. Cuming. 



7. Clypidina CANDIDA, A. Adams. C. testd ellipticd, saliduld, 

 conicd, candidd, costellis asperulatis incequalibus, radiantibus, 

 et striis elevatis transversis, concentricis, decussatd ; vertice 

 subcentrali ; apertures margine crenulato, sinu brevi, intus in 

 canalem producta. 



Hab. Port Adelaide, Australia. Mus. Cuming. 



Subgenus Tugali, Gray. 



Shell oblong, narrow anteriorly, back elevated, cancellated ; apex 

 posterior and recurved ; aperture with the margin crenulated, and 

 deeply sinuated anteriorly. 



1. TuGALi CARiNATA, A. Adams. T. testd elongato-ovali, dorsa 

 carinatd, costis longitudinalibus, radiantibus, confertis, et striis 

 transversis, concentricis, decussatd ; apice postice declinato ; 

 basi arcuatd ; apertures margine crenulato, extremitate ante- 

 riori sinuato, sinu intus in canalem producta. 



Hab. Philippines. Mus. Cuming. 



2. TuGALi ciCATRicosA, A. Adams. T. testd elongato-ovali, albd, 

 dorso valde depressd, costellis radiantibus et lineis concentricis 

 elevatis decussatd, vertice subpostica depresso excavata quasi 

 cicatricoso, subpellucido ; basi arcuato ; aperturce margine cre- 

 nulato, extremitate anteriari sinuato, sinu intus in canalem 

 producta. 



Hab. Philippines. Mus. Cuming. 



3. TuGALi scuTELLARis, A. Adams. T. testd elongato-ovali, 

 viridi-fuscd, tenui, dorso planulatd, vertice postico, acuto, vix 

 elevato, costellis radiantibus subdistantibus, et striis concen- 

 tricis incrementi, decussatd; extremitate anteriari vix sinuato; 

 aperturd intus fused, margine subcrenulata. 



Hab. Bais, Philippines. Mus. Cuming. 



4. TuGALi RADiATA, A. Adams. T. testd elongato-ovali, luteold, 

 valde depressd, costis radiantibus, rotundatis, elevatiusculis, 

 distantibus, et striis concentricis, ad incrementum ornatd ; aper- 

 turd intus albidd, margine crenulato, extremitate anteriari vix 

 sinuato. 



Hab. Catanuan, Philippines. Mus. Cuming. 



5. TuGALi DECUSSATA, A. Adams. T. testd elongato-ovali, 

 albidd, planulatd, dorso carinatd, costellis longitudinalibus, 

 radiantibus, et lineis elevatis concentricis eleganter clathratd; 

 vertice acuto, postico ; aperturce margine crenulato, antice si- 

 nuato, sinu intus in canalem producta. 



Hab. Philippine Islands. Mus. Cumiag. 



Subgenus Subemarginula, Blainville. 

 Shell conical, compressed, vertex inclined towards the posterior 



