iói 



prodUced into strong and slightly divergent points. The left side is slightly more elongated 

 than the right side (Plate LI, fig. uj. The points of the rostrum are moderately strong, but 

 there is no tracé of a rostral lens. 



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

 furca is contained three 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 quite asymmetrical. 

 W'hen viewed from above, the left side is seen to be expanded into a large wing-like projection 

 with a pointed clistal end. The dorso-lateral surface of the right side is furnished with a strong 

 spine. The furcal joints are asymmetrical. The joint of the right side is longer and broader than 

 the one on the left side (Plate LI, fig. i i). 



The antennules are composed of twenty-four joints and extend to near the end of the 

 last thoracic segment. 



The antennae, mandibles, maxillae and maxillipedes are similar to those of Pontella princeps. 



The endopodite of the first pair of feet is three-jointed. 



The other three pairs of feet are of the usual Pontella type. 



The exopodites of the fifth pair of feet are asymmetrical. The left exopodite is consi- 

 derably longer than the right. The exopodites are spiniform, and are drawn out to a single 

 point at the apex. The left exopodite only is furnished with two outer edge spines. The endo- 

 podites are asymmetrical and terminate in two spines of medium length (Plate LI, fig. 15). 



Male unknown. 



This species resembles Pontella danae in the two-jointed abdomen, the asymmetrical 

 furcal joints, and in the shape of the exopodite of the fifth pair of feet. The large projection 

 on the left side of the genital segment, and the asymmetrical condition of the fifth pair feet 

 readily separate it, however, from that species. 



Occurrence. — Four specimens were found in the plankton collected at Station \\~a. 



6. Pontella dentieanda nov. sp. Plate Lil, figs. 1 — 12. 



Female — length 1,1 mm - 



Seen from above, the body appears elongate ovate, and rather narrow. The cephalic 

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

 is symmetrical. The posterio-lateral angles are narrowly rounded, and are only very slightly 

 produced (Plate Lil, fig. 1). The points of the rostrum are moderately strong, and there is a 

 distinct tracé of a lens in the basal part (Plate LH, fig. 21. 



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

 furca is contained three and one-third times in the total length of the cephalothorax, from the 

 frontal margin to the base of the crenital segrment. The genital segment is asymmetrical. The 

 proximal portion of the lateral margin of the left side is produced into a large spiniform process 

 (Plate Lil, fig. 1). The furcal joints are asymmetrical. The left furcal joint is distinctly broader 

 than the right. 



The antennules are twenty-two-jointed and reach to the end of the third thoracic segment. 



161 



SIPOGA-EXI'EDITIE XXIX il. 21 



