214 



partly ribbed, with tumid ribs, and a broad, pale coloured, nearly 

 central band ; lip tumid, somewhat contracted and retiected, with 

 an internal, oblique, nearly central varix ; columella with 5 or 6 

 folds, of wliich the tliree anterior are large, and the remainder in- 

 distinct. 



First brought by Mr. Cuming from the Gulf of Fonseca, in the 

 Province of San Salvador, Central America. We have represented 

 tliree varieties, two from Mr. Cuming's collection, and one from 

 Mr. N orris's. 



49. VoLUTA GuiLDiNGii (pi. Iv. f. 110, 111.), uodis. 



Testa oblonga, crassa, fulvescente, hneolis saturatioribus ahisque 

 albis picta, spira acuminata, apice obtuso, anfractibus 5 ad 6, sub- 

 ventricosis, longitudinaliter costatis, interstitiis costarmn transver- 

 sim striatis, ultimo magno, Isevigatiusculo ; apertura mediocri, labio 

 externo extiis incrassato, albicante, intus dente parvo instructo; 

 cohmiellse plicis quinque ad sex parvis, anticis duabus vahdioribus. 



Shell oblong, thick, fulvous, marked with httle wliite lines, and 

 others of a darker colour, spire acuminated, with an obtuse apex ; 

 volutions 5 to 6, rather ventricose, longitudinally ribbed, interstices 

 of the ribs with transverse striae, the last volution large, rather 

 smooth ; aperture middle-sized, outer lip externally tliickened, 

 wliitish, furnished ^dth a small tooth internally ; coliunella with 5 

 or 6 folds, of which the two anterior are more prominent. 



This is the smallest known species of Volute ; it was discovered 

 at St. Vincent's, by the late Rev. Lansdowne Guilding. In Mr. 

 Cuming's and Mr. Metcalfe's collections. 



50. VoLUTA Cyllenifoemis (pi. Iv. f. 112. 113.) nobis. 



Testa parva, ovata, crassa, Iseviuscula, albicante, maculis parvis 

 flavicautibus sparsim ornata; spira subconica, anfractibus senis, 

 postice coarctatis, ad suturam granosis, antice longitudinahter cos- 

 tatis, ultimo magno, antice transversim striato, canali parvo, sub- 

 reflexo ; apertura oblonga, labio externo extiis incrassato, margine 

 interno intiis dente parvo instriicto, labio columeUari antice rugu- 

 loso, dentibus tribus parvulis munito. 



Shell small, ovate, tluck, rather smooth, whitish, sprinlvled with 

 small yellowish specks, spire somewhat conical, with 6 volutions, 

 wliich are contracted posteriorly, granose at the sutures, and longi- 

 tudinally ribbed anteriorly, the last volution is large, and anteriorly 

 transversely striated; canal small, slightly reflected; apertui'e ob- 

 long, outer hp externally thickened, its internal edge furnished with 



