CYCLOPOIDEA. 1Q85 



the cephalothorax ; and the number of posterior cephalothoracic seg- 

 ments is either three or four. The abdomen is linear, rather long, 

 but not exceeding half the length of the cephalothorax; and the 

 caudal stylets are quite short. The caudal setae are straight; they 

 are moderately short, excepting the second, which is much longer than 

 the others, and in the females observed, not shorter than the body. 

 The eyes are two on a single minute spot of pigment. 



The antennae extend outward either side with a double curvature, 

 and the tips are not in advance of the line of the beak. In the 

 females, several joints, including the apical, are furnished with one or 

 more long setae, and two towards the base are bent ; but in the males 

 examined, the same joints have setae only moderately long. The two 

 sexes thus do not agree in the setae of the antennae : moreover, 

 they are unlike (if we are right in our reference of male to female in 

 two species) in the basal joints of the antennae; in the number of 

 cephalothoracic segments, the male having a posterior segment which 

 does not appear in the female of the species alluded to; and in the 

 caudal setae, the second seta being very much shorter in the male 

 than in the female. 



The anterior feet instead of extending laterally, as in the Calani, 

 are thrown forward : the basal joint is long ; the second is still longer ; 

 and the remainder, which is quite short, consists of five to seven 

 minute joints, more or less distinct, each bearing a long naked seta, 

 and the whole forming a pencil. The leg is thrown forward so that 

 the apex of the second joint is under the mouth, and the apical por- 

 tion with the pencil is directed downward. 



The maxillipeds are nearly as in Pontella, but rather smaller. The 

 base and other joints form a straight leg, and the rather long spinulous 

 setae are together directed forward. 



The second pair of antennae are as in Calanus. One branch con- 

 sists of two nearly equal joints ; it bears at apex three setae, and on 

 the under side of the first joint other setae. The other branch is two- 

 jointed, the second quite short, and bearing a number of long setae. 



The mandible is dentate at apex, and has a short seta on one side. 

 The palpus is two-branched, and the two branches are nearly of equal 

 length ; the shorter has two short subequal joints ; the longer has a 

 short basal joint. Both are furnished at apex with several subequal 

 setae. 



The posterior feet in the female are short, as in the Calani, and with- 



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