84 THE ROYAL SOCIETY OF CANADA 
The length of the male is 2-53 mm. The rostral processes are 
well developed and form a pair of triangular processes, attached to the 
rostral region by a broad flattened base, and terminating in a sharply 
pointed apex. The lateral hooks of the cephalic region are well- 
developed, resembling those found in the genus Pontella (fig. 8). 
In the female, the cuticular lenses of the dorsal eyes are small and 
are separate from one another by about three times their diameter. 
The ventral eye is well-developed, but lacks a lens. The anterior 
antennæ extend backwards to the level of the second abdominal 
segment and are probably 25-jointed, though so much fusion has 
occurred between the more proximal joints that not more than 22 
could be distinguished; the 24th and 25th were fused, the latter being 
greatly reduced in size. The posterior antenne have the general 
Pontellid form, but are characterized by the large size of the outer 
ramus, which is quite as long as the inner one; the latter is almost 
completely fused with the distal basal joint, a faint line on the inner 
surface being the only indication of a separation. The mandible 
(fig. 9) has the distal basal limb decidedly bellied out upon its outer 

Fig. 9. Mandible of Paralabidocera amphitrites 9 
side, and the terminal portion of the outer ramus is bowed outwards 
so that the inner surface of the indistinctly separated joints look 
distally as well as inwards; the masticatory portion bears only five 
teeth, of which the first and second are widely separated and simple, 
while the remaining three are more closely set and the third and fourth 
bicuspid; two rows of small setæ occur at the base of the fifth tooth 
and a longer seta arises from the posterior border a little lateral to the 
base of the fifth tooth. The maxilla resembles closely that figured 
by Giesbrecht for Pontella lobiancoi!, the most noticeable differences 
being that the proximal group of sete on the fused Bi+Rii+Rie 
consists of three instead of four setae. The two maxillipeds resemble so 
closely those figured by Giesbrecht for Labidocera wollastoni* as to need 
no further description. 
1 W. Giesbrecht, Copepoda. Fauna n. Flora Golfes von Neapel. XIX, 1892. 
pl. XXIV, fig. 22. 
2 L.c. Pl. XXIII, figs. 10 and 20. 

