28 



and the ventricoseness 1| inches, The colour a dur 

 brownish-green, being rather pink on the umbones. 

 The ligament raised. Strong lateral markings, which 

 which were mostly raised above the shell, instead of, as 

 in the Hartwell specimens, indented. The umbones 

 were also much broader. The colour of the inside of 

 the valves was a blueish-white. Shell strong and thick. 



Mr. Gough, of Kendal, sent me specimens from the 

 canal at Kendal, in which the ligament rises at a toler- 

 able angle, and at its extremity the valves fall at an 

 angle of 45° in a straight line for two inches in length' 

 Umbones very thin. Lower half of the shell yellowish- 

 green; upper part a decided green, being mottled with 

 brown in places. Inside of the valves white. Length 

 5| inches, breadth 3 inches, and width in most ventri- 

 cose part If inches. 



Others sent by Mr. Gough, from ditches on a peat 

 bog called Brigstar Moss, near Morcamb Bay, were 

 much more ventricose, with broad umbones, and the 

 colour a darker green. 



Several specimens found in the river Trent, near 

 Beeston, were nearly 3 inches long, by If inches broad, 

 as measured at the end of the ligament, and only l^ 

 inches at the umbones. The ligament rises at an angle 

 of 20*^. 



The large Anodonta taken from the lake at Highfield 

 House, have the upper and lower edges of the valves 

 nearly parallel, with very narrow umbones. The liga. 

 ment rises. The lower half of the shell is pale green, 

 with strong lateral markings ; the upper half is a 

 brownish-green. Interior of the valves a pearly-white- 

 The specimen measured was 5| inches long, by 3 inches 

 broad, and 1| inches wide in the widest part. Larger 

 ones have been dredged from this lake. 



Another specimen from the same lake has the lower 

 edges of the valves circular. Ligament also rather 



