CAPRELLA. 
215 
elongated, without teeth or tubercles ; lower antennae ciliated. 
First joint of thorax not swollen above the insertion of se- 
cond pair of legs; the hands of second pair nearly oval, 
truncated in front and below ; the male has three teeth, the 
female only one, on the lower margin. Half an inch long. 
On the coast in various places. Devon ; Firth of Forth; 
Berwick Bay, among corallines, in deep water. 
Caprella LiEVis, Goodsir. Smooth Skeleton Screw.— 
Larger than the last, being an inch long. Head nearly 
triangular ; swelling on the first joint of thorax, near the 
hind edge. 
Firth of Forth (Goodsir). 
Caprella acanthifera, Leach. Sjpined Skeleton Screw. 
* — Head oval, short, and rounded above. First joint of 
thorax swollen above insertion of first pair of legs ; second 
pair of legs very hairy; their hand strongly notched beneath, 
and with a strong tooth below. Length, half an inch. 
British coast. 
Caprella tuberculata, Goodsir. Goodsir’s Skeleton 
Screw . (Plate XI. fig. 5.)— Allied to the last, but may be 
distinguished by the double fringe of spines on the lower 
edge of the inferior antennae : the upper antennae are also 
much shorter than in preceding species. 
