204 Mr. Lubbock on two new Subgenera o/Calanidse. 



tain whether specimens which have been long preserved in spi- 

 rits^ have or have not the inferior eyes, and I have not been able 

 to determine this point with certainty. This species, as well as 

 L. Darwmii and magna, presents a romid projection between 

 the anterior antennae, similar to that which in Pontella, &c., 

 bears the inferior eye ; but I have not been able to find any lens 

 belonging to it, and as Mr. Darwin, who, as I before said, must 

 have seen it in recent specimens, had it been present, especially 

 as he examined the mouth, did not notice it, I feel sure that in 

 L. Darwinii it is not present ; and as the projection is not so well 

 developed in L. Patagoniensis or magna as in that species, I 

 think myself justified in saying that they also have no inferior 

 eyes. 



Mandibles -^-^ inch in length. They have, like L. Darwinii, two 

 large outer teeth, then three small ones, and then a spine ser- 

 rated externally. Between each of the small teeth is a little lobe ; 

 if we count these, we shall have seven teeth and a spine. There 

 are also several rows of strong hairs, which run parallel to the 

 longer axis of the organ on its flat surface ; they are all on the 

 inner half. 



First pair of maxillipeds jj inch. 



Second pair of maxillipeds — consist of a subquadrate lobe 

 bearing a six-jointed palpus, larger in proportion than that of 

 L. Darwinii, and more resembling that of L. magna. The 

 hairs on this organ and on the following, are throughout the 

 whole of this family, I believe, for the most part only plumose 

 on the under side. On the palpus there are two unequal hairs 

 at the apex of the two basal segments, one at that of the three 

 following, and three at that of the apical segment. The hairs on 

 the apex of the last two segments have below spines so small, that 

 I could only just see them with a g-inch object-glass ; the others, 

 besides the setse below, have above very small spines, which are 

 rather larger near the apex, and do not appear to reach more 

 than half-way down the hairs. On the organ itself are five large 

 and two small hairs. The two small ones which are at the apex 

 and the last are setose only above, and the central one also has a 

 few setse on the upper edge, though neither so large nor so 

 numerous as those below. Length ~ inch ; of the palpus gig-. 



Third pair of maxillipeds. Length ^^^ . The larger hairs on 

 this organ, which appear to have only one row of secondary hairs, 

 have in reality two, one above the other, and both turned in the 

 same direction. The crenature at the tip is caused by a double 

 row of short spines or scales ; in the smaller hairs which appear 

 vcrticillate, these spines are longer, and extend from the apex 

 more than half-way towards the base. Besides these large hairs, 

 there are others smaller. Along the inner margin of the third 



