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PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 88 



From silver hake : One, collected August 15, 1907. One, collected 

 July 29, 1910. 



Two, collected August 16, 1910. Measurements, life: Length, in- 

 cluding appendix, 2.6 mm. ; breadth, 0.67 mm. ; diameter oral sucker, 

 0.25 mm., pharynx, 0.14 mm., ventral sucker, 0.27 mm. Another and 

 larger specimen (U.S.N.M. No. 8342) : Length, 4.2 mm. ; breadth, 

 0.70 mm.; diameter of oral sucker, 0.33 mm., pharynx, 0.14 mm., 

 ventral sucker, 0.35 mm.; ova, 0.027 by 0.017 mm. 



Five, collected August 19, 1910. Eight, collected May 25, 1911. 

 One, collected July 15, 1924. 



From tomcod: One, collected July 30, 1904. 



From white perch: Three (U.S.N.M. No. 8343), collected April 21, 

 1913. Measurements in balsam: Length, appendix retracted, 1.26 

 mm.; breadth, 0.26 mm.; diameter oral sucker, 0.14 mm., pharynx, 

 0.07 mm., ventral sucker, 0.17 mm.; ova not developed. 



From American smelt: One, collected January 25, 1911. 



Two (U.S.N.M. No. 8344), collected February 3, 1911. Lengths 

 in balsam, 1.33, 1.82, and 2.10 mm. Measurements of largest : Length, 

 2.10 mm.; breadth, 0.63 mm.; diameter oral sucker, 0.25 mm., 

 pharynx, 0.12 mm., ventral sucker, 0.28 mm. ; ova, 0.027 by 0.012 mm. 



From pollack: Two, collected August 12, 1910: Length in alcohol, 

 2 mm. One, collected July 1, 1912; length, 3.57 mm.; eighteen fishes 

 examined. 



One (U.S.N.M. No. 8345), collected July 31, 1924. Measurements 

 in balsam : Length, 3.80 mm. ; breadth, 0.72 mm. ; length of appendix, 

 1.33 mm.; diameter oral sucker, 0.27 mm., pharynx, 0.15 mm., ven- 

 tral sucker, 0.28 mm.; ova about 0.024 by 0.012 mm. 



From hickory shad: Two, collected August 20, 1910; two fishes 

 examined. Six, collected June 17, 1911 ; five fishes examined. Eight, 

 collected June 21, 1911; two fishes examined. Eighty (U.S.N.M. 

 No. 8346), collected June 21, 1913; length of one in formalin, 1.91 

 mm.; length of appendix 1 mm. 



Table 31. — Measurements of Uvo specimens of Brachyphallus crenatus (U.S.N.M. 

 No. 83/f6) in halsam, appendices retracted 



