NO. 1123. PROCEEDINGS OF THE NATIONAL MUSEUM. 823 



Plate V. 



EhynchohothrUim apeciosum, new species. 



1. View of portioa of proboscis near i>a8e. Specimen from F. saltairir. Enlarged 

 two hundred and twenty-fivo times. 



2. 01)verse side of proboscis from that shown in lig. 1, near apex. 



3. Apex of proboscis partly retracted, optical section diagrammatic. Specimen 

 from r. saltatrix. 



4. Part of proboscis of embryo removed from cyst in Tylosnrus carihhwiis. Enlarged 

 two hundred and twenty-live times. 



5. Obverse side of proboscis shown in fig. 4. 



6. Group of hooks seen tlirough walls of sheath, proboscidos retracted; specimen 

 from cyst in Cijnoscion regalis. Enlarged two hundred and twenty-live times. 



7. Plexus of vessels of water vascular system in edge of botbrium. Specimen 

 from F. saltatrix. Enlarged one hundred and fifty times, life. 



Bhynchobolhriinii attenuatum, Rudolphi, from Xiphias (jladius. 



8. Sketch of living specimen in water. Enlarged three times. 



9. Diagram of front view of head, showing bothria and arrangement of probos- 

 cides. 



10. Diagram of proboscis, sheath, contractile bulb, and retractor muscle. 



11. View of proboscis. Enlarged twenty-seven times, life. 



Plate VI. 



Otohotliriutn dipsactim, new species, from Pomatomus saltatrix. 



1. Embryo removed from blastocyst, a, ciliated organs of bothria (shown enlarged 

 in figs. 4, .'i). Enlarged twenty-seven times. 



2. Two transverse rows of hooks on proboscis. Enlarged three hundred times. 



3. Obverse side of proboscis from that shown in fig. 2. 



4. Ciliated organs (rudimentary sense organs?) of bothria. Enlarged two humlred 

 and twenty-five times. 



5. The same invaginated. 



Tetrarhynchus larva. 



6. Optical section of cyst with blastocyst and embryo from Mnstelus canis. Enlarged 

 eighteen times, life. 



7. Portion of proboscis of larva from stomach wall of M. canis. Enlarged three 

 hundred times. 



8. Cyst vfith. emhrjo from Chn'todipterus faber. Magnified. 



9. Portion of proboscis from embryo of same. Enlarged three hundred times. 



10. Cyst and blastocyst from peritoneum of Stromaieiis triacanthus. Enlarged 

 twenty-two times, life. 



Tetrarhynchus hisnlcafuv}, Linton. 



11. Cyst, blastocyst, and embryo from Faralichthys dentatus. Enlarged fifty times. 



12. Scolex from cyst in stomach wall of Cynoscion regalis. Enlarged thirty-two 

 times. 



13. Portion of proboscis of specimen from C. regalis. a, hooks from opposite sides of 

 proboscis. Enlarged three hundred times. 



14. Base of proboscis of scolex from pylorus of Tetrcniarce occidentalis. Enlarged 

 three hundred times. 



15. Posterior end of scolex of same. Enlarged fifty times. 



