7gg CRUSTACEA. 



ramo majore abdominis longitudine, crassd subulato. Antennas longce, 

 flagellofermh 16-articulato, subtiliter spinuloso. 



Body narrow elliptic, rounded in front. Abdomen abruptly narrower 

 than thorax, subquadrate, a little longer than broad; segments six, 

 subequal. Segments of thorax subequal, the first slightly the 

 longest. Head transverse. Caudal stylets elongate, base oblong 

 (longer than half the abdomen), longer branch as long as abdomen, 

 stout subulate. Antennae long, flagellum about sixteen-jointed, 

 minutely spinulous. 



Plate 48, fig. 8 a, animal, enlarged; 8 b, part of flagellum, more 

 enlarged. 



Island of Tongatabu, Friendly Islands. 



Length, about three lines. The articulation behind the head is but 

 little arcuate. The abdomen has the last segment but slightly longer 

 than preceding, and obtuse behind. The stylets are peculiar in having 

 an oblong base; the bases of the two are parallel, but the longer 

 branch diverges widely from the medial line. The flagellum of the 

 antennae is longer than the preceding joint, and that is but little 

 longer than the next preceding. The joints of the flagellum are 

 somewhat oblong, and have a circle of minute setules at apex. The 

 legs are minutely spinulous. 



Subfamily LYGIOG. 



Ltgia Ehrenbergii ? 



Plate 49, fig. la, animal, enlarged; b, abdomen, more enlarged; 

 c to a, abdominal appendages of the five pairs in succession. 



Island of Madeira. 



Length, eight to nine lines. Colour, grayish, or dotted with black 

 on a light ground. Length of body, excluding stylets, to breadth, as 

 17 to 7. Eyes large, black. Abdomen narrow, abruptly much nar- 



