118 
15. ANOMIA TENUISTRIATA. 
Shell very variable in shape, regularly radiately striated ; sinus of 
lower valve very large, ovate. 
Dorsal valve with three nearly equal muscular scars very close to- 
gether ; the two lower small, placed close together side by side, just 
on the lower margin of the upper scar, the hinder one being rather 
behind the hinder edge of the upper one. 
Ostrea anomialis, Lamk. Hist. A. s. V. vi. 220. 
Anomia Ephippium, Defrance, Dict. Sci. Nat. ii. 
Anomia striatula, Desh. Cog. Foss. Paris, t. 65. f. 7, 11. 
Anomia tenuistriata, Desh. Cog. Foss. Paris, i. 377, in Lamk. 
Hist. vii. 
Fossil, Grignon. 
The very characteristic scars of the dorsal valve are well shown in 
M. Deshayes’ plate above referred to, but not mentioned in the de- 
scription. 
** Upper scar of dorsal valves large; two lower scars smaller, far be- 
hind the upper one. Shell oblong, transverse. nia, Koch. 
16. ANOMIA ZNIGMATICA. 
Shell elongate, transverse, oblong, purple or yellowish, with a pur- 
plish disk ; apex acute, considerably within the dorsal edge. 
The upper scar large, suborbicular, subcentral ; lower scars 2, much 
more posterior, small, equal-sized, and nearly confluent. 
Tellina eenigmatica, Chemn. Conch. xi. t. 199. f. 1949, 1950. 
Anomia rosea, Gray, Ann. Philos. 1825, 5. 
Anomia senigmatica, Alton in Wiegmann Arch. 1837, Verz. 21; 
Reeve, Nomen. Conch. 
Hab. Indian Ocean. 
Var. 1. Elongate, purplish brown, smooth, flat. Chemn. J. c. 
f. 1949, 1950. 
Hab. Yndian Ocean, vn the surface of flat wooden piles, &c. 
Var. 2. Like former, but more elongated, and the sides folded 
together. 
Anomia naviformis, Jonas; fide Mus. Cuming. 
Enigma, sp. Koch; fide Mus. Cuming. 
Hab. Manilla. Mus. Cuming. 
Var. 3. Flat, smooth; like Var. 1, but yellow, with a dark purple- 
brown transverse ray. 
Hab. Philippines. Mus. Cuming. 
Var. 4. Flat, purple ; like Var. 1, but often more ovate, and with a 
few radiating ribs, ending in projections, making the edge sinuous. 
Hab. Singapore ; on piles of wood forming the wharves. Borneo. 
Mus. Cuming. 
*** Two upper scars small ; lower one large. Shell suborbicular ; 
sinus small. Pavro. 
17. Anomi1a ELyROS. (Mollusca, pl. 4. fig. 1, 2.) 
White, lamellar, closely radiately striated. 
