PELTIDIUM. 163 



at the time of writing his work on the Copepoda. 

 The only females, with ova, which I have seen were 

 dredged in a depth of ten fathoms off the Durham 

 coast. 



Dr. Claus's description of the lower foot-jaw (" styli 

 basali elongato non articulato ") is scarcely correct, 

 there being a very small joint intercalated just behind 

 the hand. 



3. PELTIDIUM CRENULATUM, nov. sp. PI. LXXII, figs. 



615. 



Body subovate, broader in front than behind, in- 

 cised at the junctions of the thoracic segments. 

 Anterior antenna slender; first two joints longest, 

 third and fourth about half as long ; next four very 

 short ; last about as long as the seventh and eighth 

 together. Peduncle of the posterior foot-jaw (fig. 9) 

 composed of two equal joints ; hand subquadrate and 

 marginally ciliated. The fifth foot in the female (fig. 

 10) has three rather sharp and slender apical spines 

 (one long and two short), together with two smaller 

 spines on the inner edge near the apex ; that of 

 the male (fig. 11) has one large curved apical and 

 four much smaller marginal spines, all of them very 

 blunt ; the first abdominal segment has also a strong- 

 spine at the outer angle (fig, 11 a) ; the inner angle of 

 the peduncle is produced and crenulated (fig. 10 a). 

 The produced angles of the abdominal segments in 



