auricxjlid^;. 69 



gin dilated, sinuate, spreading. Length 24|, greatest breadth 



15, least breadth 12 mill. 



Scarabns undatus, Lesson, Voy. Coquille, Zool. ii. p. 336. pi. 10. f. 6. 



Reeve in Ann. # Mag. N. H. ix. p. 219. pi. 4. f. 4; Conch. 

 Syst. ii. pi. 188. f. 4. 



Kiister, Auric, p. 65. t. 9. f. 8, 9. 



A . Adams in Proc. Zool. Soc. 1850, p. 149 ; Ann. fy May. 

 N. H. 2 ser. viii. p. 68. 

 Auricida scarabeus, var., Desh. in Lam. Hist. nouv. ed. 8. p. 328. 

 Polydonta abbreviata, Beck, Lncl. p. 101. n. 5 ? 

 Pythia imdata, Pfr. Syn. Auric, n. 87 ; Man. Auric, p. 90. 



H and A. Adams, Gen. rec. Moll. ii. p. 240. 



Rah. Isle of Waygeeoo. 



24. Pythia castanea. 



Shell shortly and deeply rimate, rather umbilicate, com- 

 pressedly oblong-conic, rather solid, slightly striated longitu- 

 dinally, with distinct arcuate striae near the suture, almost uni- 

 formly violaceous-brown, with a zigzag streak on the com- 

 pressed sides, formed by the varices, which are white, bordered 

 with chestnut-brown ; spire conic, rather blunt ; suture im- 

 pressed ; whorls nine, rather flat, the last a little longer than 

 the spire, compressed near the umbilical groove ; aperture 

 nearly perpendicular, narrow ; parietal teeth two, the upper one 

 triangular, acute, the other compressed, entering deeply, 

 shortly doubled exteriorly ; columellar plait white, middle-sized, 

 ascending slightly and obliquely ; peristome white, slightly re- 

 flexed, with the margins united by a thin deposit ; right margin 

 bearing a deep white callus, and five rather equal small teeth ; 

 columellar margin broadly spreading, shortly reflexed. Length 

 26, greatest breadth 15, least breadth 12 mill. 



Scarabus castaneus, Lesson, Voy. Coquille, Zool. ii. p. 336. pi. 10. f.7. 

 Reeve in Ann. $ Mag. N. H. ix. p. 220. pi. 4. f. 10 ; Conch. 



Syst. ii. pi. 188. f. 10. 

 Kiister, Auric, p. 61. t. 9. f. 1, 2. 



A. Adams in Proc. Zool. Soc. 1850, p. 150 ; Ann. # Mag. 

 N. H 2 ser. viii. p. 69. 

 Polydonta castanea, Beck, Lnd. p. 101. n. 4. 

 Auricula scarabeus, var., Desh. in Lam. Hist. nouv. ed. viii. p. 328. 

 Pythia castanea, Mbrch, Cat. Yold. p. 37. n. 769. 

 Pfr. Syn. Auric, n. 88 ; Mon. Auric, p. 91. 

 H. and A. Adams, Gen. rec. Moll. ii. p. 240. 

 Hah. Waygeeoo (Less.) ; Moluccas (Beck) ; Isle of Zebu (H. 

 Cuming). 



