NEBITA. Ill 



known coarsely sculptured species tessellated with bluish- 

 black on the ribs. 



35. CHLOROSTOMA, f. 32, Lamarch. — Quam N. plexa magis 

 distanter costata, costis et interstitiis laevigatis ; apertura 

 rudissime plicata verrucosa et dentata ; area columellari 

 colore flavido tincta. — With nearly the same shape as N. 

 plexa, but broader ribs and wider interstices. The aperture 

 is coarsely wrinkled, toothed, and granulated ; general colour 

 tending to yellow, with very broad tessellating black spots. 



36. SQUAMULATA, f. 24, 25, 101, 102, 122, Le Guillou.— 

 Subtrigona, varie flammulis fasciisque picta, costellis squa- 

 mosis insequalibus lirata ; spira parva, planata ; apertura 

 expansa labio externo lato, intus crenulato, area columellari 

 verrucosa et acute dentata. — Variously banded and spotted, 

 with flat spire and expanded outer lip, the two latter 

 characters, with the scaly ribs, distinguishing it from N. 

 chamcdeon. N. textilis, Lamarck, is identical. N. electrina, 

 Eeeve, is only a variety of this. 



37. siGNATA, f. 18, Macleay. — Only differs from N. squa- 

 mulata in having a blood-red mark among the wrinkles of 

 the columellar area. A very young shell among our speci- 

 mens labelled N. vittulata resembles it with the exception of 

 the mark. 



38. CHAMiELEON, f. 22, 94-99, Linnceiis. — Globoso-subovata 

 coloribus variis flammulatim et fasciatim picta, costis laeWbus 

 plerumque distantibus, frequenter approximatis ; spira parva 

 exsertiuscula, anfractibus superne subplanulatis ; apertura 

 mediocri, labio externo intus tenuiter plicato, supra infraque 

 uuidentato; area columellari valide pauci-verrucoso medio 

 ad marginem acute dentato. — The lively flames gathering in 

 rays at the suture, intensifying as they cross the ribs, and in- 

 terrupted by cross bands of light, are the same in all varieties 

 of colour. The ribs are normally distant ; but sometimes inter- 

 mediate ribs arise, which become nearly equal with the 

 others. The species is named N. stella as of Chemnitz in 

 Reeve ; but Hanley has identified it as the Linngean shell in 

 ' Ipsa Conchylia.'' Our figures 22, 96, 97, are typically 

 characteristic ; f. 78, 79 ditto, but named oryza, Recluz, f. 93, 

 94, 95. The closely ribbed variety named prceco.^/n-i'te, Adams 

 in Reeve {Hindsii^ Recluz), is scarcely distinguishable. 



