COLUMBELLA.— Plate XX. 



Species 116. (Mus. Cuming.) 



C'OLUMBELLA PULCHRIOK. Col. testd ovatd, tenuiculd, 

 Iwvigatd, mbpellucido-albd, maculis punctuque aqui- 

 distautibus purpureo-fmcis ornatd, anfraciibus declivi- 

 convexis ; aperiurd ovatd, labro tenuiculo, mperne sitb- 

 emarffinato. 



The beautiful Columbella. Shell ovate, rather thin, 

 smooth, subpellucid-white, ornamented with purple- 

 brown blotches and equidistant dots, whorls slopingly 

 convex; aperture ovate, lip ratiier thin, slightly 

 notched at the upper part. 



C. B. Adams, Cat. Shells of Panama, p. 9 !•. 



Hab. Panama (under stones, at low-water mark) ; C. B. 

 Adams. 

 Rather an abnormal form of ColmiibeUa, finely dotted 



and blotched with chocolate-brown, the colour being rather 



gathered and filleted at the sutures. Tlie dots are more 

 minute than is represented in the accompanying figure. 



Species 117. (Mus. Cuming.) 



CoLUMBELLA MONILIFERA. Col. te»td oblongo-actiminald, 

 solidd, undique valde decussatim costatd, alia, maculis 

 subquadratis brunnein bifasciatim cinctd ; aperturd sub- 

 angustd, intus denticulatd. 



The NECKLACE CoLUMBELLA. Shell oblong-acuminated, 

 solid, strongly decussately ribbed throughout, white, 

 encircled with two bands of somewhat square brown 

 spots; aperture rather narrow, denticulated within. 



SowEBBY, Pro. Zool. Soc. 1844, p. 53. 



Hab. West Indies. 



The granules formed at the points of decussation of the 



ribs have a delicate pearly appearance. 



