CYCLOPOIDEA. jQgg 



very short, obtuse behind. Anterior antennae considerably longer 

 than the body, gently arcuate, tips anterior to line of beak, first 

 joint much oblong, four apical short; seta of second joint rather 

 long, of sixth a little shorter, of sixteenth a little longer; apical 

 setae scarcely longer than joint, two posterior subapical long (others 

 mutilated). Abdomen short. Caudal stylets oblong, about twice 

 as long as broad, setae widely spreading. 



Plate 76, fig. 1 a, animal, enlarged ; b, another individual. 

 Collected in the Sooloo Archipelago, February 2, 1842. 



Length, one-eighth of an inch. The furcate processes of the front 

 below are stout and rather short, and quite unlike the long slender pro- 

 cesses of some Calani, and in one specimen, they were seen either side 

 in an upper view. The abdomen is three-jointed. The caudal stylets 

 are articulated obliquely to the abdomen, and the projecting part is but 

 slightly oblong. The outer setae are nearly at right angles with the 

 side of the stylet; the second were broken off and are probably 

 quite long; the third and fourth are about as long as the abdomen. 

 The setae of the second pair of antennae and the following organs 

 are rather short. The posterior subapical setae of the anterior antennae 

 are as long as the last five or six joints of the antenna ; the anterior 

 antepenult is as long as the joint (other apical or subapical mutilated). 

 These antennae diverge at base at an angle of about 120°, but gradually 

 curve more and more outward. 



The animal often flexed its antennae against its sides, quite unlike 

 in this respect the ordinary Calani. 



Rhincalanus cornutus. 



Qracillimus. Frons valde elongatus, subacutus. Gephalothorax posticl 

 rotundatus, 6-articulatus, articulo postico fere obsolete, articulis tribus 

 precedentibus posticd acutis. Antennae anticce sesqui corporis longitu- 

 dine,fere rectce, vix arcuatce, apicibus f route paululo anterioribus ; seta 

 articuli tertii longiusculd, setis apicalibus et penultimis brevibus, posticd 

 antepenultimd longiore. Abdomen cur turn. Styli caudales elongati; 

 setis valde diffusis. 



