80 
PEcTUNCULUS PALLIUM. Pect. testd oblique ovatd, subquadratd, 
radiatim costatd, costis levibus, prope marginem subobsoletis ; 
luteold, maculis rubidis, quadratis, sparsis, vivide pictd. 
Conch. Icon., Pectunculus, pl. 5. f. 21. 
Hab. Zanzibar. 
This shell may be easily recognised by the dark ruddy spots which 
are sparingly scattered here and there upon the warm uniform ground 
which covers the surface. The cardinal portion of the shell is rather 
solid. 
Prctuncutus noposus. FPect. tesid suborbiculari, Sulvo, furvo 
castaneove variegatd ; radiatim costatd, costis nodosis ; intus albidd, 
antice fuscescente. 
Conch. Icon., Pectunculus, pl. 5. f. 21. 
Hab. Ceylon. 
The knobs on the ribs, by which this shell is chiefly characterized, 
are much more strongly developed on the posterior side of the shell ; 
on the anterior side they are almost obsolete. 
Pectuncutus tineatus. Peet. testd orbiculari, converd, subauricu- 
latd ; decussatim striatd, striis longitudinalibus fortioribus ; albidd, 
postice et mediané maculis castaneis irregulariter nebulosd, anticé 
lineis longitudinalibus castaneis vivide pictd ; umbonibus centralibus. 
Conch. Icon., Pectunculus, pl. 5. f. 25. 
Hab. West Indies. 
The painting of this species is not much unlike that of the Pectun- 
culus pennaceus ; the anterior side of the shell, however, is white and 
very peculiarly lineated. 
PecruncuLus osiiquus. Pect. testd transversd, oblique ovatd ; 
albido-rufescente, maculis cuspidiformibus spadiceis profuse pictd ; 
intus nigerrimo-fuscd ; umbonibus centralibus. 
Conch. Icon., Pectunculus, pl. 6. f. 33. 
Hab. Swan River. 
The whole of the inside of this shell, with the exception of the an- 
terior margin and muscular impression, is of a very deep blackish 
brown. 
Prectuncutus TELLin#ForMis. ect. testd ovatd, transversd, sub- 
depressd, radiatim costatd, costis subobsoletis ; albidd, anticé et 
superne carneo-fusco tinctd; intus subfuscd, postic? albicante ; 
umbonibus vie obliquis. 
Conch. Icon., Pectunculus, pl. 6. f. 34. 
Hab. Rio Janeiro. } 
This shell differs from the preceding in being more transverse and 
faintly ribbed ; the interior is not so dark, nor does the outer surface 
exhibit the least indication of any spots or other dark marks. 
PEcTUNCULUS TENUICOsTaTUS. ect. testd orbiculari, subventri- 
cosd, subtilissimé costatd, costis quasi filis, numerosis, interstitiis 
epidermide lineariter insertd ; fuscescente, costis pallidioribus ; um- 
bonibus subcentralibus. 
