29 



circular. Colour a light green, with faint converging 

 rays from the umbones of a lighter hue. Froiu the um 

 bones, across each valve, is a broad red band. The in- 

 terior of the valves is of a bronze colour, and especially 

 so near the umbones. Length 4g inches, breadth 2^ 

 inches. 



A rery veotricose variety is found in the same lake, 

 whose form is nearly oval. Its length two inches and 

 three-sixteenths, breadth one inch and five-sixteenths, 

 and nearly an inch in width in the most ventricose part. 



A specimen which I obtained from Mr. Tennant, of 

 the Strand, London, was of a pale green colour, with 

 very dark green converging rays from the umbones. 

 The ligament very narrow. From the front of the liga- 

 ment the valves have a rapid bend. 



Some very curious specimens were shown to me by 

 Professor Forbes, in the Museum of Practical Geology. 

 They were almost oval, and bore less of the character 

 of the Anodouta than any others which I have examined. 



Some large and handsome specimens have been sent 

 to me by Mr. T. Bailey, of Basford, from a sLeet of 

 water in his own grounds. The lower half of the 

 valves are of a yellowish-green colour, whilst the other 

 hdiXi Sixe ^ decided greeli. The size is of inches long, 

 by 3| inches broad in the broadest part (which is at 

 the summit of the ligament) ; behind the umbones the 

 breadth is a quarter of an inch less. In ventricosity an 

 inch and three quarters. 



Very large specimens are obtained from the Lan- 

 caster Canal (Winstanley). 



The varieties of some authors, found in this neigh 

 bourbood, are:- - 



Anodonta cygnea var. Aualina, in the lake at High- 

 field House, a brook at Lenton, the river Trent and 

 the river Soar. 

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