THALESTBIS. 131 



6. THALESTRIS RUFO-VIOLASOENS (?), Glaus. PI. LXI, 



figs. 18. 



Thalestris rufo-violascens, Glaus. Die Copepoden-Fauna von 



Nizza, p. 33, taf. iv, figs. 1822 

 (1866). 



Body of the female robust; first four segments 

 much wider than the rest and produced laterally into 

 projecting angular processes ; body-segments bordered 

 with chitinous bands and marginally ciliated, rostrum 

 broad and short. Anterior antennae 9-jointed, the 

 proportionate lengths of the joints being as follows : 

 8, 12, 9, 7, 3J, 4, 2J, 2|, 3. Inner branch of posterior 

 antenna 2-jointed. Mandible and palp (fig. 3) strong 

 and well developed ; first foot-jaw (fig. 4) having a 

 stout terminal claw and three digitiform marginal 

 segments ; second foot-jaw (fig. 5) very large and 

 stout, hand very broad, its inner margin straight, and 

 having two rows of short spine-like cilia extending 

 along its whole length, outer margin excessively 

 convex; claw strong and very much curved, with a 

 single accessory curved seta on the inner margin. 

 First pair of feet (fig. 6) robust, branches sub-equal, 

 margins smooth, terminal claws extremely long, joints 

 of the outer branch in the second, third, and fourth 

 pairs of feet contracted at the bases (fig. 7), first joint 

 much expanded at the apex, its inner angle truncate 

 and giving attachment to a long seta, second joints 

 somewhat similar but less prominent ; outer border of 

 the first joint ciliated and bearing a strong apical 



