144 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



▼OL. 63, 



1908. Wilson, Chas. B. The Morphology, Development and Economic Rela- 

 tions of the Genus Lernaea, 



Soon to appear In the Bulletin of the Bureau of Fisheries, giving the de- 

 velopment of both sexes and a revision of all the known species. 



1881. Wilson, Dk. Andrew. Degeneration. Pop. Sci. Mon., vol. 19, pp. 218- 

 229, 382-394, 19 text figures. 

 -The Lernaeans, pp. 227-228. 



1870. Wright, E. P. On a New Species of the genus Penuella. Ann. Mag> 

 Nat. Hist, ser. 4, vol. 5, pp. 43-47, pi. 1. 

 Pennella orthagorisci. 



EXPLANATION OF THE PLATES. 



of 



Female of Penicvlus clavatus. 



Fig. 1. Side view ; actual length of egg strings 17 mm. Fig. 2. Head and 

 neck, enlarged, showing antennae, mouth-parts, and musculature of proboscis. 

 Fig. 3. First and second antennae, ventral view. Figs. 4. 5. First and second 

 swimming legs. Fig. 6. Anal laminae. Fig. 7. Ventral view of cleared specimen, 

 showing arrangement of rpproductive organs. 



Plate 2. 



Female of Peniculus /iHsipes. 



Fig. 8. Side view ; actual length of egg strings 10.50 mm. Fig. 9. Head and 

 anterior thorax much enlarged. Figs. 10, 11, 12. First, second, third, and 

 fourth swimming legs. Fig, 13. Anal laminae. Fig. 14. Side view of cleared 

 specimen, showing arrangement of reproductive organs. 



Pl.ATK 3. 



Female of Cardiodcctes meduaaeus. 



Fig. 15. Shh' vit'w of cleai'ed specimen, showing reprotluctive tniil digestive 

 systems; frontal processes removed from head. Fig. 1*^5. Side view of head and 

 anterior thorax, with processes in place. Fig. 17. First and second antennae and 



