158 PROCEEDINGS OF THE NATIONAL, MUSEUM vol.88 



were examined at the Laboratory of the Bureau of Fisheries, Woods 

 Hole, Mass., August 6, 1919. The fish had been collected at the in- 

 stance of Dr. Earl A. Danielson, of Litchfield, Minn. Letters accom- 

 panying the collection were dated June 18 and 23. The fish were sent 

 on account of their infestation with the tapeworm Proteocephalus 

 amhloplites. Immature distomes were found in the flesh of eight of 

 the ten fishes, from 3 to 27 in each, 108 in all. Measurements in 

 balsam: Length, 5 mm.; breadth, at level of oral sucker, 0.81 mm., 

 at level of ventral sucker, 1 mm., maximum, 1.22 mm.; oral sucker, 

 length, 0.25 mm., breadth, 0.26 mm.; diameter of ventral sucker, 

 0.64 mm. 



Received on October 23, 1902, caudal and dorsal fins and pieces of 

 the flesh of small-mouthed black bass, taken by the Rev. James H. 

 Young, Troy, Ohio, in Lost Creek, Miami County, Ohio. Mr. Young 

 stated that the bass taken during the summer were nearly all in- 

 fested with parasites, on the fins and in the flesh, especially along 

 the backbone. These parasites proved to be C. marginatum. One 

 removed from its cyst measured 4.5 mm. in length and 2 mm. in 

 breadth. 



Three small-mouthed black bass (U.S.N.M. No. 8396), about 4 cm. 

 in length, sent to the Laboratory of the Bureau of Fisheries, Woods 

 Hole, Mass., by Deputy Fish and Game Warden Charles Meyers, 

 Far Hills, N. J., were received on July 29, 1915. The fish were 

 taken from Ravine Lake, Somerset Hills Country Club. 



Five encysted distomes of C. marginatum were found, one cyst on 

 the gills, one in the gill cavity, and three in the flesh. Those on the 

 gills and in the gill cavity were bright j^ellow, the others pale yellow. 

 The largest, from the flesh, in formalin measured 9 mm. in length. 

 Measurements in balsam: Length, 8.5 mm.; breadth, at level of oral 

 sucker, 1,12 mm., at level of ventral sucker, 1.54 mm., maximum, 2.03 

 mm.; diameter of oral sucker, 0.36 mm., ventral sucker, 0.70 mm., 

 breadth, 0.83 mm. 



Received from Dr. Tarleton H. Bean on June 8, 1915, distomes 

 collected from yellow perch in Honeoge, and neighboring lakes, by 

 Ward's Natural Science Establishment. There were seven distomes 

 in the vial, all C. marginatwm. Lengths, in formalin, 4 to 6 mm.; 

 breadth, 1.5 mm. Some with fragments of cysts attached. 



Family STRIGEIDAE Railliet, 1919 

 Genus TETRACOTYLE Filippi, 1854 



TETRACOTYLE COMMUNIS Hughes 



Plate 24, FiGtrEE 319 



Tetracotyle communis Hughes, Trans. Amer. Micr. Soc, vol. 47, pp. 415^19, 

 figs. 1, 5, 6, 8-11, 1928. 



