Mr. J. Lubbock on tivo new species (>^ Calanidse. 117 



stnicta. Spina prehensili magna. Pede postico maris sinistro, 

 parro, non ad apicem tumido, uon papillose, ramo intemo nuUo. 



Long. cir. ^. 



Hab. Atlanticum oceanum, S. Lat. 18° 22', Long. 2° W. 



Pontella Bairdii. 



I now proceed to describe P. Bairdii, which I have so named 

 in honour of Dr. Bairdj who has done so much to increase our 

 knowledge of the Eutomostraca of this countiy. 



This species agrees in most points very closely with L. Dar- 

 ivinii, but differs from it in having an inferior eye, besides the 

 two superior ; it belongs therefore to Pontella. 



TTie ceplialothorax has only six joints, the last having coalesced 

 with the preceding. The anterior segment agrees with that of 

 L. Darwinii in not having a spine directed outwards, as is the 

 case in L. magna and Patagoniensis. The rostrum (PI. V. fig. 5) 

 is strong, deeply forked, and extends downwards as far as the 

 inferior eye. Each fork is about y~ in length, j^^ in breadth 

 at the base, and j~ half way down. 



The superior eyes are a good deal larger in the male than in 

 the female. In one specimen they are bright violet, but in every 

 other specimen the colour has been entirely removed ; while the 

 inferior eye, which is also violet, has in very many instances re- 

 tained its colour. 



The inferior eye is situated between the anterior antennae, it 

 is large, and, as remarked above, dark violet. It would be impos- 

 sible to overlook it, even in the most cursory examination. 



I shall refer to this point again when I consider the classifi- 

 cation. 



The anterior antenna of the female and the left antenna of the 

 male has on the internal side of the apex of the penultimate seg- 

 ment a long hair —^ of an inch in length, and the apical and 

 antepenultimate segments have each a corresponding one -^-g of 

 an inch in length (fig. 6). 



The right antenna of the male is formed upon the same type 

 as that of Z/. Darivinii, from which it differs chiefly in the apical 

 plate being longer, reaching nearly to the apex of the antepenul- 

 timate segment ; and in the three apical segments being more 

 pear-shaped, with the larger end in front. In some specimens 

 the antenna was more swollen than in others, which perhaps 

 may be accounted for by diff'erences of age, or by the state of 

 development of the spermatic tube. 



The second pair of antenna ^j in length. 



The mandibles ^'^ in length, and the palpus also ^^^ . Each lobe 

 of the palpus has six long plumose hairs, and the inner lobe 

 also four smaller ones. 



