46 PROCEEDINGS OF THE NATIONAL MUSEUM vol.70 



RECORD OF COLLECTIONS 



Marila marila: 



(U.S.N.M., Helm. Coll. 7881.) 



1887, August 23.— Two, length 10 to 10.5 mm. 



1914, February 19. — Eight, longest 15 mm. 



1914, February 26. — About 43 strobiles, few with scoleces, maxi- 

 mum length 45 mm. 



1914, February 28. — About 20 strobiles, small. 

 Fulica aTnericana: 



1920, November 20. — Six scoleces and a few fragments of stro- 

 biles. Collected by Robert A. GofRn. 

 Mergus serrator: 



1913, January 1 and April 11. — Few, associated with numerous 

 examples of H. iiiacracanthos. 

 Oidemia deglandi: 



1887, August 29. — Both large and small taenioids collected on 

 this date agree in the character of the scoleces, including the 

 hooks, and in the anatomy of the proglottides. The maximum 

 length was 150 mm. A small strobile measured 6 mm. in 

 length; diameter of scolex 0.17. 



1911, July 3. — Numerous, length of strobiles not exceeding 10 

 mm.; posterior ends of longest moniliform, with a few seg- 

 ments loosely attached. 



1913, August 14. — Numerous, 2,000 (estimated) ; length 16 mm., 

 more or less. 



1913, September 4. — Very numerous, as above. 



1913, November 4. — Many ; length about 7 mm. ; strobiles more or 

 less arcuate; three birds examined, worms in two. 



1916, October 18. — Approximately 500 ; length 7 mm. 

 Oidemia perspicillata: 



1913, May 8.— Few, 5 to 12 mm. in length. 



1913, July 12. — Large numbers with scoleces embedded in mucous 

 membrane of intestine; 1,267 counted; all small, 4 mm., more 

 or less. 



HYMENOLEPIS (WEINLANDIA), species 



Figures 148-152 



A few taenioids from Marila maHla^ and Oidemia deglandi, while 

 possibly not belonging to the same species, have many points of 

 resemblance, especially in the shape and arrangement of the hooks 

 which closely resemble those of Hymenolepis anceps, new species 

 from Mergus serrator. 



(1) Among the taenioid cestodes found in Oidemia deglandi 

 (U.S.N.M., Helm. Coll. 7882), most of which have been referred to 

 H. tritesticulata, there are a few fragments of strobiles, one strobile 

 with the scolex missing, and one scolex with about 12 mm. of 



