IÓ2 



The antennae, mandibles, maxillae and maxillipedes are of the usual Pontella type. 



The endopodite of the first pair of feet is composed of three joints. 



The second, third and fourth pairs of feet are of the usual type. 



The fifth pair of feet is symmetrical and somewhat similar to that of Pontella f era. 

 The apex of the exopodite is spiniform. The distal portion of the inner margin is furnished 

 with three spines. The outer margin has also three spines, but they are much wider apart. The 

 endopodite is very slightly bifurcate at the apex (Plate Lil, fig. 5). 



Male — length 2,9 mm. 



The male resembles the female in general appearance, but the abdomen is composed 

 of five segments, and the furcal joints are nearly symmetrical. The combined length of the 

 abdomen and furca is contained nearly three times in the total length of the cepkalothorax, 

 from the frontal margin to the base of the genital segment. The rami of the rostrum are 

 asymmetrical, but this may be accidental (Plate Lil, fig. 7). 



The right antennule has the middle joints much infiated. The proximal hinge joint is 

 narrow. It is furnished with a large saucer-shaped process with a serrate upper edge. The 

 distal hinge joint has a simple lamella terminating in a clistinct tooth (Plate Lil, fig. 9). 



The fifth pair is large and well developed. The thumb-like process on the exopodite of 

 the right foot is large and spiniform. It is greatly curved and the apex is directed outwards. The 

 middle of the first joint is furnished with a moderately long tube-like process. The last joint is 

 lamelliform and spoon-shaped. There appears to be a rudimentary endopodite on the right foot, 

 but this may be abnormal (Plate Lil, fig. 1 2). The last joint of the exopodite of the left foot 

 terminates in two strong spines. The inner spine is contracted to a fine point. The outer spine 

 is of nearly equal width throughout its length. The distal end is rather bluntly rounded (Plate 

 Lil, fig. 1 1). The setae on the second joint of the basiopodite is attached to a tooth-like projection. 



This species has a general resemblance to Pontella tenuiremis Giesbrecht, but the female 

 is easily separated by the large spiniform projection on the left side of the genital segment. The 

 structure of the male fifth pair readily distinguishes it from any of the known males. 



O ecu r re nee. - Thirty-two females and eighteen males were obtained from the plankton 

 collected at the following stations. 



Stat. 66, 5 specimens. — Stat. 81, 6 specimens. — Stat. 93, 2 specimens. — Stat. 98, 2 spe- 

 cimens. — Stat. 99, 5 specimens. — Stat. 109, iS specimens. — Stat. 110, 2 specimens. — 

 Stat. 124, 1 specimen. -- Stat. 12S (HENSEN vertical net, 700 metres to surface), 3 speci- 

 mens. — Stat. 157, 1 specimen. — Stats. 194 — 7, 1 specimen. — Stat. 213, 2 specimens. — 

 Stat. 282, 2 specimens. 



7. Pontella forficula nov. sp. Plate LIII, figs. 1 — 7. 



Male — length 3,1 mm. 



Yiewed from above, the body appears elongate ovate. and rather slender. The ce'phalic 

 segment is furnished with side hooks, and a pair of dorsal eye lenses. The last thoracic segment 

 is symmetrical. The posterio-lateral angles are rounded, and the ends are only slightly produced. 

 The rami of the rostrum are asymmetrical, but this may be accidental. There is no tracé of a 

 lens in the basal part of the rostrum (Plate LIII, fig. 2). 



162 



