28 BRITISH COPEPODA. 
Genus 8. AmymonE, Claus (1868). 
Body much compressed. Dorsal margin very con- 
vex. Head and last thoracic segment very large, pro- 
duced ventrally and approximating so as to give a 
more or less circular outline to the animal. Abdomen 
very short. Head united with the first thoracic 
segment. First pair of antennz elongated, 6- or 8- 
jointed; second pair 3-jointed, and bearing a small 1- 
or 2-jointed secondary branch, last joint clawed. 
Mandible-palp 1-branched ;* maxillar palp elongated, 
2-jointed. First foot-jaw slender, 3-jointed; second 
much elongated, 2-jointed, and forming a strong 
erasping hand. First pair of feet not prehensile, 2- 
branched, each branch consisting of a single joint; 
second, third, and fourth pairs with both branches 
3-jointed. Fifth foot m the female composed of two, 
in the male of one, joint. Integument excessively 
tough and coriaceous, usually cellular or areolated. 
1. Amymone spH@RIcA, Claus. Pl. XLIX, figs. 1—11. 
Amymone sphricea, Claus. Die frei-lebenden Copepoden, p. 114, 
t. xx, figs. 1—9 (1863). 
— — Boeck. Oversigt Norges Copepoder, p. 32 
(1864), 
— falcata, Norman. Brit. Assoc. Report, p. 296 (1868). 
* Boeck says éwo-branched—a mistake, unless his specimens belong 
to a different species from those here described. The statement of the 
same author as to the structure of the second and third pairs of feet 
is also erroneous (“outer branch 2-jointed, inner 3-jointed”) both 
branches being always 3-jointed. 
