CEUSTACEA. 



521 



This species is widely dispersed and very common in Devon- 

 shiie and Cornwall. 



In former times it was highly reputed for its supposed medicinal 

 virtues, and was inserted as a medical agent in the older books 

 of Materia Medica. Though discarded from the Pharmacoijoeia, it 

 is still taken medicinally in some parts of Somersetshire. 



ENTOMOSTRACOUS CRUSTACEA. 



OSTRACOBA. 



The following species were dredged off the Cornish coast, and 

 were examined and named by Mr. G. S. Brady, F.L.S. 



