54 
Guide io Crustacea. 
Table-case to the preceding, and the male has sexual appendages on the 
No. 10. abdomen. 
The common Lobster of Europe, Homarus gammarus , is repre- 
sented on the American coasts of the North Atlantic by a closely 
allied species, H. americanus. A third species, H. capensis, is 
Fig. 34. 
The “ Norway Lobster,” Nephrops norvegicus, about one-third natural size. 
[Table-case No. lO.fflBj 
found at the Cape of Good Hope, but it is of small size and of no 
economic importance. A series of specimens and drawings in 
Wall-cases Nos. 1 to 3, illustrating the structure and life-history 
of the Common Lobster, have already been described. The 
“ Norway Lobster,” Nephrops norvegicus (Fig. 34), is found 
abundantly in certain localities in deeper water than that frequented 
by the Common Lobster. It is generally sold in London shops 
