3. Pharella. 
1. P. javanica (fig. 12). 
30 
Fig. 12. — Pharella javanica. 
a a adductor muscles, p, palpi. I, liver, h, heart. 
4 Pharus. 
1. P. legumen, t. 344. f. 2, 3, 6. 
ft Siphons much produced, large, united, covered with a thick peri - 
ostraca. Retractor siphonal muscles small. Siphonal in- 
flection very small. 
5. Cyrtodaria. 
1. C. Glycimeris, t. 345. f. 3, 4, 5 (fig. 13). 
ftf Siphons elongate, with large fan-shaped retractor muscles. 
Siphonal inflection deep, rounded. 
§ Siphons very large, united, covered with a hard periostraca. 
Shell compressed. Hinge-teeth 3 * 3, compressed. 
6. Siliqua. 
§§ Siphons large, united at the base, covered with a hard peri- 
ostraca. Shell sub cylindrical. Hinge-teeth conic. 
7 . Glycimeris. 
1. G. australis, t. 346. f. 2. 
2. G. Aldrovandi ( Proc . Zool. Soc. 1855, fig. p. 218). 
