Shell fub-ovate, white, and fub-pelhicid, wrought with dif- Substriata. 

 tant, obsolete, elevated, lonjoitudinal /?n> .- iimbo prominent, 

 biit not inclined. Infide plain, and the margin fmooth : the 

 hinge furnillied with a flight projection inwards, margined 

 fo as to form a concavity. Diameter one tenth of an inch. 



Taken by deep dredging amongfl coralline : Devon coafl, 

 extremely rare* 



This fpecies, though not ftricStly a fpoo7i-hingef is more 

 nearly allied to the genus Ligula than to any other. 



SOLEN. 



Solen Marginatus PuU. Hutch. Dorset, t. 4. f. 8. Vagina. 



Solea Vagina Lin. Trans, viii. p. 42. p. 4s. 



This fliell has been ufually confidered as rare in a living 

 or recent (late, but we have lately had the good fortune to 

 difcover it in its native bed-, in a fand bank, near the fult 

 ftone, in the eftuary of Kingjhridge, it is by no means uncom- 

 mon, at the depih of two feet or more beneath the furface. 

 The habitations of thefe flieils are known by a fmall hole, 

 but they do not eje6l the water in prefling the contiguous 

 fand, like fome others of the genus. The fpecimens in this 

 place are unulually large, not unfrequently above five inches 

 in breadth, and one in length : but they are moil commonly 

 foul, and deltitute of the fine poliflied epidermis, 



D The 



p. 565. 



