C Y M T H I D E A. 77^ 



ClROLANA ARMATA. 



Corpus sat angustum, dorso nudum, ad abdominis basin paido inter- 

 ruptum. Caput multum transversum. Abdomen paulo oblongum, 

 segmento lino partim celato; ultimo subpentagono, non oblongo, postice 

 obtuso, longissime ciliato. Styli caudales abdominem multo superantes, 

 ramis latis, extremitate obliqud truncatis, interno duplo latiwe, parce 

 longiore, triangulato, ciliis longissimis (ramos longitudine a&quantibus) . 

 Pedes toti spinis et setis longis dense armati. Antennae \mm 2da3que 

 longitudine subaiquce. 



Body rather narrow, naked above, a little interrupted at base of abdo- 

 men. Head very transverse. Abdomen a little oblong, first seg- 

 ment partly covered; last segment subpentagonal, not oblong, 

 obtuse behind, very long ciliate. Caudal stylets extending much 

 beyond the abdomen, branches broad, at apex obliquely truncate, 

 inner branch twice the broader, a little the longer, triangulate, 

 ciliation as long as the branch. All the feet thickly armed with 

 spiniform seta3, and slender setules. Antennae of first and second 

 pairs subequal in length. 



Plate 51, fig. 5 a, head, much enlarged, the antennae except basal 

 joint, concealed by being thrown back under the sides of the body ; b, 

 abdomen; c, part of flagellum of second antennae; d, leg of third pair; 

 e, extremity of leg of sixth or seventh pair. 



Kio Janeiro. 



Length, four lines. The densely spinulous legs, the very broad 

 triangular inner branch of the caudal stylets, the very long plumose 

 ciliation of the stylets and extremity of the abdomen, are distinguish- 

 ing characters. The stylets are narrow in the hirtipes, according to 

 Edwards's figure (Cuv., pi. 67, f. 6), and the ciliation is short. The 

 second antennae when thrown back just reach to the fifth thoracic 

 segment ; the flagellum has ten joints, these joints are a little oblong, 

 and have several spinules or setae about the outer apex, and longish 

 hairs on the inner side. The abdomen tapers slightly from its base; the 



