ANOMALOCERA. 75 



following pairs 2-jointed. Fifth pair of feet in the 

 female having a rudimentary inner, and a long two- 

 jointed outer branch ; in the male, the inner branch is 

 wanting, and the outer forms a prehensile organ. 



I. Anomalocera Patersonii, Temjpleton. Plate XI, figs. 



1—14, and Plate X, figs. 13, 14. 



Anomalocera Patersonii, Templeton. Trans. Entom. Soc, vol. ii, 

 p. 35. t. v, figs. 1—3 (1837). 



— — Baird. Brit. Entom., p. 229, tab. xxvii, 



figs. 1 a— i, 2 a—c, (1850). 



— — Boeck. Oversigt Norges Copepoder, p. 21, 



(1864). 

 Irenceus Patersonii, Goodsir. Edin. New Phil. Journ., xxxv, p. 339, 

 t. vi, figs. 12—17; t. iv, figs. 1—9, 1843). 

 — — Clans, Die frei-lebenden Copopoden, p. 206, 



taf. ii, fig. 1; t. xxxvii, figs. 1—6, (1863). 

 Pontia Patersonii, Kroyer. Nat. Hist. Tidskrift, anden Rsekkes 

 andet Bind, p. 561, t. vi, figs. 1—7 (1849). 



Body elongated ; inferior angles of last thoracic seg- 

 ment produced into large spine-like processes. An- 

 terior antennae half the length of the body, 24- jointed, 

 those of the male (figs. 2, 3) provided with club- 

 shaped (auditory ?) appendages, in addition to nume- 

 rous short hairs ; that of the right side in the male 

 excessively tumid in the middle from the thirteenth 

 to the sixteenth joint, and hinged between the 

 seventeenth and eighteenth joints. The fourteenth 

 joint bears a long, straight, dagger-like spine, which 

 is hooked at the apex and apparently jointed at 

 the base, much like the sting of a nettle. The 

 sixteenth, seventeenth, and eighteenth joints have 



