62 ANCILLARIA. 6. 



spirl products ; anfractibus supra rotundis, sutura varice spirali 

 tecta, tcgmine calloso versus suturam inferiorem extenso, suturani 

 gradatim appropiuquante, balteo iuferiori medio diviso ; varice co- 

 lumellari trigono, oblique uni-sulcato ; apertura subovali, infra 

 valide ernarginata, labio externo unidentifero (f. 4, 5). — The 

 texture and colour of this species resembles that of the beautiful 

 A. glabrata. The spire-covering enamel reaches over two-thirds 

 of the body-whorl in front, whence it gradually widens and de- 

 scends very near the inferior suture, towards the outer margin, 

 so that the uncovered bell becomes narrower as the shell grows 

 older. 



23. dimidiata, Sowi. Th. — A. tenuis, elongata, alba, fulvo 

 supra suturam tincta ; spira elevata ; anfractibus subrotundis ; 

 tegmine calloso, ad medium anfractu ultimo producto, balteo iu- 

 feriori duplicate, labio externo unidentato ; varice elongate, an- 

 gustato, sulcato (f. 55, 56). — This thin, pale species presents a 

 medium in respect of the extension of the spire-covering enamel, 

 which reaches nearly halfway down on the body-whorl. The two 

 specimens in Mr. Cuming's collection are the oidy ones I have 

 seen. 



24. elongata, Gray. — A. tenuis, elongata, alba, tenuissime 

 cancellata ; anfractibus tegmine spirali late marginatis ; spira elon- 

 gata, gradata, spiraliter lirata ; sutura iuferiori pene oblita, balteo 

 inferiori medio divisa; varice columcllari lineari; apertura ampla, 

 basi ernarginata, labio externo vix unidentato (f. 52, 53). — This 

 thin, white, elongated shell has the spiral enamel forming a broad 

 baud over the upper part of the whorls. The uncovered surface is 

 finely striated in both directions. 



25. cingulata. — A. tenuis, ovalis, supra purpurea, infra fulva; 

 fascia fusca ; spira elongata, obtusa ; anfractibus ventricosis, balteo 

 albo angusto marginatis, linea elevata supra suturam cinctis ; bal- 

 teo inferiori supra fusco, infra albo, medio linea elevata diviso ; 

 varice columeUari tortuoso; apertura ampla, infra valide ernarginata. 

 ■ — In this elegant species there is no trace of the basal tooth- 

 bearing groove. A specimen has lately come into the possession 

 of M. Vernede which is twice the size of our figure, so that, with 

 the splendid " I'crnedei," that gentleman has the two largest An- 

 cillaria in existence. 



26. obtusa, Swains. — A. ovata; spira brevi, obtusa, crassa 

 obtecta ; ultimo anfractu tegmine spirali marginato ; infra linea, 

 impressa, alba, balteo inferiori duplicate, varice columeUari trigono, 

 albo, unisulcato ; apertura ovali, infra ernarginata ; labio externo 



