CYCLOPOIDEA. 



1139 



It differs from that also in the acute points behind, and in the an- 

 tennae. 



The anterior apical seta of the antennae is as long as the last two 

 joints of the organ, while the other apical are shorter than the joint. 

 The penult setae, anterior and posterior, are nearly equal, and about 

 as long as the penult joint. The posterior antepenult has the same 

 length ; but the anterior is half shorter. The anterior of the next 

 joint preceding is as long as the joint. The last joint of the antennae 

 is longer than the preceding. There is a longish seta to the eighth or 

 ninth joint from the extremity. 



The caudal stylets are nearly twice as long as broad ; and the setae 

 are about as long as the abdomen. Abdomen short, four-jointed. The 

 inferior eyes are quite small; the superior being directly over the 

 former, in a vertical view they were not distinctly observed. 



PONTELLINA CONTRACTA. 



Frons rotundatus. CepTialothorax 6-7-articulatus, capite discrete, angiitis 

 posiicis brevissimd acutis, segmento postico fere obsoleto. Oculi inferiores 

 majusculi. Antennas, anticce cephalothorace nan longiores, 100°-110° 

 divaricatce, rectos, fermh VI -articulatce, setis brevibus, apicali anticd 

 langiore. Rami antennarum posticarum valde incequi. Styli caudales 

 elangati. Abdomen 2-articulatum. 



Front rounded. Cephalo thorax posteriorly very short acute, six or 

 seven-jointed, head separate, posterior segments four, but the fourth 

 nearly obsolete. Inferior eyes rather large. Anterior antennae not 

 longer than the cephalothorax, divergent 100° to 110°, about seven- 

 teen-jointed ; setae short, the anterior apical longest, about as long 

 as joint, other apical a little shorter, the subapical short or very 

 short. Branches of posterior antenna very uneqal. Abdomen two- 

 jointed, the second joint oblong. Caudal stylets elongate, parallel; 

 setae about as long as abdomen. 



Plate 80, fig. 2 a, animal, enlarged ; b, side view of beak ; c, extre- 

 mity of antenna ; also, fig. 3, view, enlarged. 



Collected (fig. 2 a), August 7, 1839, 5 A. m., latitude 18° 13' 



