58 



The endopodite of the antennae is about equal to one-third of the length of the exopodite. 



The second joint of the basiopodite of the maxillae is furnished with one long seta and 

 two short ones on its distal angle. The exopodite is furnished with eleven long setae and the 

 endopodite with three. 



The mandibles and maxillipedes resemble those of Euchirclla rostrata. 



The exopodite of the first pair of feet is indistinctly three-jointed, and is furnished with 

 three marginal spines. The endopodite is short and one-jointed. 



The exopodite of the second pair of feet is three-jointed and the endopodite one-jointed. 



The third and fourth pairs of feet have a three-jointed exopodite and endopodite. The 

 first joint of the basiopodite of the fourth pair of feet is furnished with one strong tooth on 

 its inner margin (Plate XII, 19 — 20). 



Only two specimens, one of which was immature, were obtained from plankton collected 



at the following stations. 



Stat. 148, HENSEN vertical net 1000 metres to surface, 1 mature female. 

 Stat. 276, HENSEN vertical net 750 metres to surface, 1 immature female. 



I have been unable to detect any difference between the mature female obtained by the 



'Siboga', and the description and figures given by Dr. Wolfenden. 



Euchirclla maxima has hitherto only been known from the North Atlantic Ocean. 



9. Euchirclla granulaia nov. sp. Plate XIII, figs. 1 — 12. 



Female — length 5,5 mm. 



The ccphalothorax is oblong ovate and very robust. The head is distinctly separated 

 from the first thoracic segment. It is without a crest, but has a short one-pointed rostrum. The 

 fourth and fifth thoracic segments are completely separated. The last thoracic segment is very 

 slightly produced, and the distal margins are narrowly rounded when seen in lateral view. 



The abdomen is composed of four joints. The combined length of the abdomen and 

 furca is contained three and a half times in the total length of the ccphalothorax, from the 

 frontal margin to the base of the genital segment. The genital segment is symmetrical with 

 broadly rounded lateral margins, and is greatly swollen below. It is about as broad as long, 

 and exceeds the combined length of the next three segments. The second and third segments 

 are of about equal size. The third segment is distinctly shorter than the others. The furcal 

 joints are about as broad as long, and are slightly shorter than the anal segment. The posterior 

 portions of the genital segment, and the whole of the second, third, and fourth segments are 

 well covered with fine hairs. 



The antennules are twenty-four-jointed, and extend beyond the end of the furca. 



The endopodite of the antennae is about three-fourths of the length of the exopodite, 

 and bears eight + seven setae on the apical joint. 



The mandibles have a strongly toothed cutting edge. The first joint of the endopodite 

 is furnished with two setae. 



The second joint of the basiopodite of the maxillae is furnished with five setae on its 

 apex. The exopodite is furnished with eleven long setae. The endopodite is apparently indistinctly 



5S 



