166 TESTACEOUS MOLLUSCA. 



and obsoletely grooved down the middle ; white richly painted with 

 transversely flowing patches of bright orange, which on the pos- 

 terior half of the shell are edged with blackish brown. 2. — 

 Philippines. 



P. Tessellatus. Sow. Z. P. 1832.— Reeve. Ic. f. 29. 

 Orbicular, triangularly attenuated towards the umbones, equilateral, 

 solid, tumid, white tessellated and variegated with brownish or 

 purplish lake ; the radiating ribs depressed and rounded, smooth, 

 equal in size to the interstices, about twenty-five in number : beaks 

 inflexed ligamental area small. J. — W. Colombia. 



P. Morum. Reeve. Z. P. \$A2>.— Reeve. Ic. f. 40. Some- 

 what pecten- shaped, pale pink sparingly and irregularly painted 

 with long ruddy spots : radiately ribbed, ribs smooth : umbones 

 nearly central, f . — Madagascar ? Allied to the last. 



P. Oculatatus. Reeve. Z. P. 1843.-— Reeve. Ic. f. 38. 

 Somewhat pecten-shaped, radiately ribbed, brown sparingly and 

 irregularly ornamented with white spots or spaces bordered with 

 dark brown: umbones central but rather oblique. f. — West 

 Indies. 



P. Nodosus. Reeve. Z. P. 1843.— Reeve. Ic. /. 22. Sub- 

 orbicular, longer than broad, yellow variegated with dusky brown 

 or chesnut, radiately ribbed, ribs distant and knobbed, the knobs 

 nearly obsolete posteriorly : interior whitish, brown posteriorly. 

 1 . . 1£. — Ceylon. 



P. Pallium. Reeve. Z. P. 1843.— Reeve. Ic. f. 21. Ob- 

 liquely ovate, subtriangular, the shell being much contracted to- 

 wards the umbones : rich brownish yellow vividly painted with 

 scattered square dark spots : radiately ribbed, ribs nearly obsolete 

 towards the margin. ^ • • H* — Zanzibar. 



P. Bicolor. Reeve. Z. P. 1843.— Reeve. Ic. f. 20.— 

 Beechey. Zool. t. 42. f. 3. Suborbicular, inequilateral, broader 

 than long, attenuated towards the umbones longitudinally grooved, 

 grooves numerous and very narrow, whitish clouded with violet 

 and irregularly painted with triangular rusty reddish spots. J . . 1 . 

 — California. 



P. Strigilatus. Soto. Z. P. 1832.— Reeve. Ic. f. 31. 

 Suborbicular, triangularly attenuated towards the umbones, ven- 

 tricose, pinkish variegated and streaked with rust-colour; the 

 radiating ribs rather distant and rounded, interstices smooth. 

 1 . . 1. — South America. 



P. In^equalis. Sorv. Z. P. 1832. — {not Beechey. Zool.) — 

 Reeve. Ic. f. 16.— P. Pectiniformis. W. S. t. 2. f. 11. Sub- 

 cordate, oblique, inequilateral, longer than broad, gibbous, with 

 obtuse radiating striae white or lilac-grey with four or five broad, 

 rusty or blackish transverse bands, the striae disposed in rib-like 

 clusters and their interstices striated. 14 . ■ 1A. — Panama. The 



