ASTACUS. 
101 
down the middle. Carapace finely granulated, of a greenish- 
grey. 
Hab. Bivers and streams, betaking themselves to holes 
in the banks. 
This species is eaten, but has no great flavour . 
Gen. 36. ASTACUS, Fair. 
Beak narrow, and armed with several teeth on each side. 
Eyes spherical. Last joint of carapace cemented to the 
preceding. Outer antennae with the basal plate small, and 
resembling a movable tooth. Hands extremely large, and 
compressed, the wrist elongated. 
| Astacus Gammarus.^ Lobster . — Beak longer than the 
I peduncle of outer antennae, armed on each side with three 
| conical thick teeth ; there are no teeth on the under sur- 
: face.f 
Found generally on our rocky coasts. 
In fishing for lobsters, according to Mr. Couch (Cornish 
j Fauna, p. 78), bait is used which is tainted, or has been pre- 
* Cancer Gammarus, * L . • Astacus marinus, Fair. ; Homarus vulgaris, 
j; M. Fdw. 
t In the American Lobster the under side of the beak has two conical 
I teeth placed near the point. 
