PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1886. 



EXPLANATION OF PLATE XI. 



Cho)>d>acanthua coitunculi, sp. li. 9 (page 322). 



Fig. 1. Dorsal view, enlarged 11 diameters. 



Fig. 2. Ventral view, with male attached to caudal segment, enlarged 11 diame- 

 ters. 



Fig. 3. Lateral view, enlarged 11 diameters. 



Fig. 4. Anterior antennae, basal joints of the second antennae, and horny basal 

 frame-work of the latter ; enlarged 28 diameters. 



Fig. 5. Anterior antenna of another specimen, showing an apparent joint near 

 the middle (see page 323), and posterior antenna, roughly drawn ; en- 

 larged slightly less than fig. 4. 



Fig. 6. Second pair of mouth organs, enlarged 55 diameters. 



Fig. 7. Third pair of mouth organs, enlarged 55 diameters. 



