Mr. J. Lubbock on two new species of Calanidae. 123 



The second pair of antenna have thirteen long hairs at the 

 end of the longer branch ; they are ^^ of an inch in length. 



The mandibles jj. Palpus ^^^. The rows of hairs which I 

 have mentioned as present in L. Patagoniensis and magna are 

 here much developed and form a strong brush. 



First pair of maxillipeds -g^. The lobes are more divided 

 than in the allied species. The spines on the inner edge are few 

 in number, large, strong, curved, and clothed with short brown 

 hairs. 



Second pair of maxillipeds y^^. Palpus y^^. There are, as 

 irxL. Patagoniensis, seven hairs on the organ itself; the external 

 (nearest to the palpus) small, setose on both sides ; the next 

 only half as long as the first. The next two verj- long, with in- 

 conspicuous hairs on the lower side. The fifth short, setose on 

 each side, but chiefly below, the next only setose below. The 

 internal setose on each side, but chiefly below. The last three 

 hairs are about the same size, and half as long as the preceding. 

 The palpus consists of four segments only, the basal and apical 

 bearing at the apex two, the rest one hair each, all setose below. 



T7ii7d pair of maxillipeds yy. There are six of the smaller 

 hairs plumose on each side. The larger hairs are beautifully 

 crenate at the apex for about ^rd of their length. The secondary 

 spines of all the basal portion have disappeared. 



Fifth pair of legs. Male (fig. 8). The left leg is much 

 smaller than the right, and has no inner branch. The second 

 segment has a spine externally at the apex. The third is small 

 and bears the two tufts of hairs, and the fourth is very small, 

 and bears at the apex a little tapering delicate lobe, which may, 

 perhaps, be the rudiment of another segment, -^^ of an inch. 



The right leg (fig. 8) also consists of foui" segments ; the third, 

 which in some species is so much swollen, is small, its office 

 being probably in part transferred to the strong prehensile an- 

 tenna. The fourth segment is small, and the spine of the 

 third is very large and pointed, so that at first sight it might 

 be mistaken for the fourth segment. The presence of two 

 hairs on the smaller spine unmistakeably denote it to be the 

 real homologue of the apical segment ; -^-^ in length when not 

 extended. 



In the female (fig. 9) they are -^^ in length. The inner branch 

 bifid at the apex ; the outer much-curved, also bifid at the apex, 

 with a large spine on the inner and two very small ones on the 

 outer side. 



Abdomen. Female (fig. 11). Two-jointed, asymmetrical, the 

 right side of the basal joint bearing a large sUghtly tapering 

 lobe, about half as long as the succeeding joint. 



The abdomen of the male (fig. 12) is similar to that of the 



9* 



