256 BOPYRID^. 



itself between the branchial appendages and the carapace, 

 and forming a tumour on one side. From this situation 

 he extracted it alive, and kept it in sea-water for several 

 days. In all the specimens which he discovered the 

 female was attended by the minute male, which was con- 

 cealed amongst the arborescent appendages of the tail, 

 to which it was affixed firmly by its claws. He adds, 

 that the very disproportionate size of the sexes is wisely 

 adapted to an animal whose habitation is so confined. 



As we are only acquainted with a single British species 

 (which is also found on the north-west shores of France), 

 it is unnecessary to redescribe the characters of the 

 species, which are included in those of the genus 

 given above. The colour of the animal is generally 

 orange, with the appendages whitish. Our figures are 

 copied from the beautiful ones published by M. Milne 

 Edwards in the Crochard Edition of Cuvier's " Regne 

 Animal/' that author having been enabled to examine 

 recent specimens of both sexes. It was found by Colonel 

 Montagu in the Kingsbridge estuary, on the south coast 

 of Devonshire. 



The Callianassa on which it lives exists in galleries of 

 its own excavation, about a foot beneath the surface of 

 the sea bottom. 



Unfortunately, the specimen preserved in the British 

 Museum, and to which is attached a label in Montagu's 

 hand-writing, is not an lone, but a Bopyrus. 



Brebisson (" Crust. Departm. Calvados ") states that 

 lone thoracicus " se trouve sous les pierres baignees par la 

 mer ; " but we fear that he was misled by Latreille's 

 incorrect reference of Oniscus cceruleatm (Praniza) to the 

 Oniscus thoracicus of " Montagus," in the " Encyclopedic 

 Methodique." We cannot reconcile his description of 

 the animal with the true lone. 



