ANODON.—P ate L 
Species 2. (Fig. 2, Mus. Sowerby.) and Plate II. fig. 26. 
Anopon cranazus. An.testd, elongata, subovatd, magna, 
subcompressd, tenut, valde ineequilaterali, olivaced 
vel fumeo-fuscd, varie fasciatd, plerumque viridi 
radiata, intus iridescente albida ; latere antico pla- 
niusculo, margine dorsali elevato, cuneato, ventrali 
sursum paulo acclivi; medio subcompresso, um- 
bonibus retusis, planulatis, tenuiter undulatis, 
margine ventrali leviter sinuato; latere postico 
subexpanso, obliquo, producto, obscwré biangulato, 
inter angulos truncato, margine dorsali recto, ven- 
trali convexo, versus angulum acelivt. 
Tue Swan Anovon. Shell elongated, subovate, large, 
subcompressed, thin, very inequilateral, olive or 
smoky brown variously blended, generally rayed 
with green, iridescent white within; anterior side 
rather flattened, dorsal margin elevated, cuneate, 
ventral a little sloped upwards, middle rather 
compressed, umboes retuse, flattened, finely un- 

dulated, ventral margin slightly sinuated ; posterior 
side somewhat expanded, obliquely produced, 
obscurely biangular, truncated between the angles, 
dorsal margin straight, ventral convex, sloped 
upwards towards the angle. 
Linyaus. Systema Nature (Mytilus.) 
Mytilus anatinus, Linneus. 
Anodonta sulcata and intermedia, Lamarck. 
Mytilus stagnalis and zellenensis, Gmelin. 
Mytilus fuscatus, Dillwyn. 
Mytilus radiatus, Muhlfield. 
Mytilus avonensis, Montagu. 
Anodon variabilis, Drapornand. 
Anodon ventricosus, cellenensis, ponderosa, Pfeiffer. 
Anodon paludosa, Turton. 
Anodon piscinalis, Nilson. 
Hab, Europe. 
This very variable species may be traced through 
all its forms by the character of its umboes, which are 
compressed and finely undulated. 

