CYCLOPOIDEA. 1Q75 



Front obtuse. Cephalothorax posteriorly narrowed, behind long-acute, 

 the points appressed to abdomen, five-jointed, four posterior seg- 

 ments of nearly equal length. Anterior antennae a little longer than 

 the body, with a slight double curvature, tips behind line of beak, 

 last joint much more slender than penult, setae short, two posterior 

 subapical very long and rather stout, subequal, the anterior penult 

 half shorter, apical short, not longer than apical joint, spreading. 

 Caudal stylets short, setae spreading, of moderate length, second 

 nearly half longer than the others. 



Plate 74, fig. o a, animal, enlarged ; b, extremity of antenna ; c, 

 caudal stylets and setae of another individual. 



Collected in the Pacific, latitude 25° north, longitude 167° east, 

 May 14, 1841; also latitude 30° south, longitude 13° east, April 21, 

 1842; also March 4, 1842, east of Sumatra. 



Length, one-twelfth of an inch. Colour, red in blotches, or about 

 the articulations and mouth, and also in the palpi and posterior 

 antennae. The long posterior points of the cephalothorax close 

 appressed to the abdomen give a peculiar appearance to the species. 

 The caudal stylets are a little longer than broad. The antennae are 

 longer than the body by the apical joint. The setae towards base of 

 anterior antennae are all very short, with an occasional one but little 

 longer; the posterior subapical are as long as last five or six joints, and 

 the penult articulates with the penult joint near the middle of its poste- 

 rior margin. The longest of the apical setae is about equal to the joint 

 in length. Of the fourth joint from the extremity, the posterior seta is 

 as long as breadth of joint, and the anterior is twice longer. The last 

 joint of the antennae is very much more slender than the preceding. 



Plate 74, fig. 6, represents the antenna of an individual apparently 

 of the. above species ; and if so, the organ is a monstrosity. The 

 setae are all short, and there is a tuft at apex, which looks quite 

 abnormal, especially as there are no posterior subapical setae to the 

 organ, as in all other known species. It consists of twenty-one joints, 

 instead of twenty-four, the entire number, evincing that probably the 

 last three joints were abortive ; its length was about equal to the 

 cephalothorax and half the abdomen. It was taken southeast of 

 Sumatra, March 3, 1842. 



