I 



NO. 1123. PROCEEDINGS OF THE NATIONAL MUSEUM. 821 



13. Anterior end of head of same, compressed, life. Enlarged two hundred and 



twenty-five times. ?> h, bothria; ji. myzorlnjnchtis; r, r, vessels of water vascular 

 system ; c, calcareous bodies. 



14. Specimen from intestine of Faralichihys dentatus, contracted, life. 



15. Abnormal specimen from same host ; a, posterior end contracted, life. 



Plate II. 



Phyllobothrinm loUginis, from the squid {Ommastrcphes illecebrosus) 



1. Specimen slightly compressed and enlarged, life. 



2. Sketch of specimen lying in water, life. 



3. Scoles with one bothrinm flattened on bottom of dish, life. 



4. Scolex compressed and magnified. j>. myzorhijnclms : h h, bothria; v, vessel of 

 water vascular system, life. 



5. Single bothrinm, enlarged, life. 



6. Anterior end of bothrinm, showing auxiliary suckers, life. 



7. Very young scolex, magnified, life. 



8. Another young scolex, showing difierent state of contraction, life. 



9. Another young scolex with bothria retracted; h, posterior edge of bothrinm, 

 natural size. 



TJiysanoceplialmn, species from the squid (Ommastrephcs Ulecehrosus) . 



10. Lateral view of scolex. Enlarged two hundred and twenty-five times. 



11. Antero-marginal view of same. Enlarged two hundred and twenty-five times. 



Ehynclioliotlirium larva;. 



12. Part of proboscis and hooks of specimen from cyst in Cenlroprisies striatus; a b, 

 hooks from opposite sides of proboscis near apex. Enlarged three hundred times. 



13. Cyst (c) with blastocyst (&) and embryo (e) from Caranx chrysiis. Enlarged 

 eighteen times. 



14. Embryo of same released from blastocyst and enlarged. 



15. Portion of proboscis of same, highly magnified. 



16. Cyst (c), blastocyst (h), and embryo (e) fTomAngnilla chrysypa; m, hyaline mem- 

 brane surrounding the blastocyst. Enlarged fifteen times. 



Plate III. 

 Rhynchobothrium larvw. 



1. Embryo removed from cyst, peritoneum of Anguilla cliryaypa. Enlarged fifteen 

 times, life. 



2. Cyst, blastocyst, and embryo from Microgadus tomcod. Enlarged fifteen times, 

 life. 



3. Cyst, blastocyst, and embryo from Prionotiis evolans. Enlarged twenty times, 

 life. 



4. Embryo removed from cyst (fig. 3). Enlarged twenty-four times, life. 



5. Ten hooks from proboscis of embryo (fig. 4). Enlarged three hundred and 

 seventy-five times. 



6. Hooks, base of proboscis of embryo from cyst in Menticirrus saxatilis. Enlarged 

 two hundred times. 



7. Hooks, base of retracted proboscis of embryo from cyst in Macrurus hairdii. 

 Enlarged two hundred times. 



8. a to /, hooks, proboscis of embryo from cyst in Phycis chusa. Enlarged three 

 hundred times. 



9. Two hooks from proboscis of embryo from cyst in Stenotomim chrysops. En- 

 larged about three hundred times. 



