Bull. U. S. F. C. 1899. (To face page 304.) 
Plate 33 
Parasitic copepod from Cynoscion regalis. 
1. Dorsal view of specimen showing the minute antenna; and the 
single eye, from life, x 8. 
2. Ventral view of head, from life. • (18. 
3. Dorsal view of head, from life, x 68. 
1. Ventral view, from glycerin mount, x 100. 
The right, maxilla is broken, its basal joint alone remaining. 
5. Portion of one of the tail forks, x 100.' 
a, Chitinous cuticle; b, subcuticular tissue joined with the cuti- 
cle by spine-like processes. 
Octobothrium denticulatuin from PollacMus virens , gills. 
6. Ventral view, alcoholic specimen. ■ 1. 
7. Ventral view of anterior end. x 68. 
c, Ova; g, cirrus with its circle of bifurcate hooks. 
8. One of the posterior suckers showing chitinous hooks and patch 
of papillse. x 68. 
9. Papilla? more highly magnified, x 260. 
10. Ovum, sketched as it lay in the uterus; one of the filaments con- 
cealed in part, x 176. 
