42 AUBICULID-E. 



straight, right margin somewhat thickened within ; columellar 

 margin dilated, callous, prominent. Length 10, greatest breadth 

 6 mill. 



Auricula costata, Qaoy and Gahn. Astrol. ii. p. 173. pi. 13. f. 43-46. 



Desk, in Lam. Hist. viii. p. 337. n. 24. 



Kiist. Auric, p. 46. t. 17. f. 5-7. 

 Melampus costatus, Beck, Ltd. p. 107. n. 13. 



Pfr. Si/n. Auric, n. 56 ; Mon. Auric, p. 55. 

 Melampus (Tralia) costatus, H. and A. Adams in Proc. Z. S. 



1854, p. 12. n. 31. 

 Tralia (Persa) costata, H. and A. Adams, 6en.rec.Moll. ii. p. 245. 



Hah. Port Carteret, New Ireland. 



63. Melampus dtjplicatus. 



Shell imperforate, oblong, solid, arcuately striated, white, 

 covered with a deciduous greenish-fulvous periostraca ; spire 

 short, conoidal, rather obtuse ; suture obsolete ; whorls five to six, 

 contiguous, the last forming three-fourths of the total length, 

 inflated above the middle, slightly attenuated at base ; aperture 

 perpendicular, semielliptical, channeled in front ; body of the 

 penultimate whorl bearing a nodiform callus, and below it a 

 transverse lamelliform plait ; columella duplicate, with two ob- 

 lique parallel plaits; peristome simple; right margin some- 

 what arched, with a slight deposit within. Length 10, breadth 

 5§mffl. 



Melampus duplicatus, Pfr. in Proc. Zool. Soc. 1854, p. 151 ; Si/n. 



Auric, n. 57 ; Novit. 'Conch, i. p. 17. n. 28. t. 5. f. 6-8 ; Mon. 



Auric, p. 56. 

 Tralia (Persa) duplicata, II. and A. Adams, Gen. rec. Moll. ii. 



p. 245. 

 Hab. ? 



64. Melamptjs ? ExiGtnrs. 



Shell ovate-turbinate, rather coniform, slightly shining, sculp- 

 tured with crowded, very minute, indistinct spiral strife ; colu- 

 mella three-plaited; labrum smooth, with an internal longi- 

 tudinal rib parallel to the margin. Colour chestnut-rufous, 

 clouded with paler spots. Length scarcely T 4 g, breadth scarcely 

 T \- inch. (Loive.) 



Melampus exiguus, Loice in Zool. Journ. v. p. 291. pi. 13. f. 6-7. 



Pfr. Si/n. Auric, n. 58 ; Mon. Auric, p. 56. 

 Melampus (Tralia) exiguus, H. and A. Adams in Proc. Z. S. 

 1854, p. 11. n. 19. 



