'73 

 ~. Pontellopsis pexa nov. sp. l'late LIV, figs. 11 — 14. 



Female — length 2,2 mm. 



Seen trom above, the body appears of the usual Pontellopsis shape. It is robust, and 

 the last thoracic segment is produced into bluntly rounded processes (Plate LIV, fig. 11). The 

 cephalic segment and the first three thoracic segments, have narrow bands of short hairs. The 

 dorsal surface of the last thoracic segment is covered with short hairs as shewn in the figure. 

 The rami of the rostum are long and slender (Plate LIV, fig. 1 2). 



The abdomen is composed of two segments. The genital segment is long and asymmetrical. 

 The distal end of the right side is considerably inflated. The furcal joints are comparatively 

 short and are nearly symmetrical. The abdominal segments are without spines. 



The antennules are twenty-jointed. The third to the eighth joints are rather indistinctly 

 separated. 



The antennae, mandibles, maxillae and maxillipedes are similar to those Pontellopsis armata. 



The first four pairs of feet are also similar to those of that species. 



The fifth pair of feet is quite asymmetrical. The exopodite of the right foot is much 

 shorter than the exopodite of the left foot. The distal end of the inner margin is produced into 

 a strong spine. The apex of the right exopodite terminates in three small teeth. The exopodite 

 of the left foot is moderately long and spiniform. There is no inner edge spine and the apex 

 terminates in a single point. The endopodites are asymmetrical and the apex is bifurcate 

 (Plate LIV, fig. 14). 



This species has a certain amount of resemblance to Pontellopsis tennicauda (Giesbrecht), 

 but it can readily be separated from that species, or any of the other known members of the 

 genus, by the bluntly rounded projections of the last thoracic segment, ancl by the structure 

 of the fifth pair of feet. 



Male unknown. 



Occurrence. — One specimen was found in the plankton collected at each of the 

 following two stations. 



Stat. 13S. — Stat. 145. 



8. Pontellopsis macronyx nov. sp. Plate LIV, Figs. 1 — 10. 



Female — length 1,97 mm. 



Viewed from above, the body appears moderately robust. The last thoracic segment is 

 symmetrical. It is produced posteriorly into pointed processes (Plate LIV, fig. 1). The rami of 

 the rostrum are long and slender. 



The abdomen is composed of two segments. The combined length of the abdomen and 

 furca is contained two and a half times in the total length of the cephalothorax, from the 

 frontal margin to the base of the genital segment. The genital segment is moderately long. It 

 is slightly asymmetrical. The proximal and distal regions of the margin of each side are furnished 

 with spines. The right distal spine is shorter than the left distal spine. The furcal joints are 

 short (Plate LVI, fig. 1). 



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