AURICTTLID^:. 89 



Auricula nucleus, Exist. Auric, p. 29. t. 4. f. 5, 6 ? 

 Auricula cassis, Kiist. in Ind. fasc. 42 ? 

 Cassidulus nucleus, Heck, Ind. p. 105. n. 4. 

 Rhodostoma nucleus, Swains. Mdlac. p. 334. 

 Cassidula nucleus, Morch, Cat Yold. p. 38. n. 776. 



H. and A. Adams in Proc. Zool. Soc. 1854, p. 31 ; Gen. rec. 

 Moll. ii. p. 238. 



Pfr. Syn. Auric, n. 118 ; Mon. Auric, p. 115. 



/3. Slightly banded. 



Auricula vespertilionis, Less. Voy. Coquille, p. 340. n. 84 {Beck). 

 Hah. Otaheite ; Manilla ; the variety in New Ireland. 



13. Cassidula mustelina. 



Shell subrimate, ovate-conoidal, slightly striated spirally, 

 dark brown, marked usually with four unequal white or bluish 

 bands; spire short, conoidal, rather pointed; suture linear; 

 whorls seven, the upper ones almost flat, the last forming 

 about four-fifths of the total length, ventricose, furnished at 

 base with an arched white keel and with a second one next 

 the umbilical groove ; aperture nearly perpendicular, elongate, 

 rounded in front; body of the penultimate whorl bearing an 

 indistinct tubercle above, and, near the columella, a compressed 

 plait, scarcely descending; columellar plait simple, slightly 

 ascending ; peristome white or rose-coloured, inflated externally, 

 with the margins united by a very thin deposit ; right margin 

 furnished within with a longitudinal crest, which above the 

 middle is interrupted by a semicircular notch; columellar 

 margin much dilated, spreading. Length 24, greatest breadth 

 17 mill. 



Lister, Hist. t. 834. f. 59. 



Enorr, Vercjn. vi. pi. 17. f. 9. 

 Auricula mustelina, Desk, in Enc. Meth. ii. p. 92. n. 14, and in 

 Lam. Hist. viii. p. 336. n. 22. 

 KM. Auric, p. 28. t. 4. f. 3, 4. 

 Auricula rhodostoma, Hombr. and Jacq. Voy. Pole Sucl, Zool. v. 



p. 33. pi. 9. f. 1-3. 

 Cassidulus mustelse, Beck, Ind. p. 105. n. 3. 

 Cassidida mustelina, Anton, Verz. p. 48. n. 1771. 



//. and A. Adams in Proc. Zool. Soc. 1854, p. 31 ; Gen. rec. 



Moll, ii. p. 238. 

 Pfr. Syn. Auric, n. 119; Mon. Auric, p. 116. 

 Cassidula mustelse, Morch, Cat. Yold. p. 38. n. 777. 

 Hub. New Zealand, Singapore, and Pido Penang. 



