TREMATODES FROM FISHES — ^LINTON 



19 



the compact portion, pursues a somewhat tortuous course, crossing 

 to the left side of the median line, then passing forward and crossing 

 to the right side, and returning on the right side of the median line 

 to the shell gland, which lies in front of the ovary. There it is 

 joined by the vitelline duct and the duct from the seminal receptacle. 

 There appears to be some variation in the course of the later folds 

 of the ovary, but, in general, it is much as in the one shown in the 

 sketch (pi. 16, fig. 217) . There is also some variation in the outlines 

 of the compact portion of the ovary, but in all it is lobed and broader 

 than long. 



Testes about 60, many of them irregularly lobed. 



The suckers near the tip of the sucker-bearing portion are dis- 

 tinctly in two rows, but near the body proper they do not appear 

 to be distinctly in two rows, even in some cases appearing to be in 

 four or more irregular rows. This irregularity is more or less the 

 result of compression. 



Table ^.—Measurements of three specimens of Microtyle pomatomi in balsam 



Measurement 



Length 



Length of sucker-bearing portion 



Breadth, at level of anterior suckers 



Breadth, maximum... 



Anterior sucker, length 



Anterior sucker, breadth 



Pharynx, length 



Pharynx, breadth 



Mm. 

 5.63 

 2.53 

 .18 

 1.36 

 .06 

 .07 

 .05 

 .04 



Ova, exclusive of filaments, 0.17 by 0.05 mm., to 0.24 by 0.08 mm. 

 Posterior suckers about 0.06 by 0.07 mm. 



Host. — Bluefish {Poniatomus saltatrix). 



Record of coUections.-^\iX.^^Vi (U.S.N.M. No. 8162), collected 

 August 11, 1904, from gills of host. 



Twenty-six, collected July 1, 1910, from gills of host. Measure- 

 ments, life: Length, 7.5 mm.; length of sucker-bearing portion, 2.5 

 mm. ; maximum breadth, 2 mm. 



MICROCOTYLE STENOTOMI Goto 



Plate 16, Figure 219 



Microcotyle stenotomi Goto, Journ. Coll. Sci. Imp. Univ. Tokyo, vol. 12, pp. 279- 

 281, pi. 21, fig. 28, 1899.— G. A. and W. G. MacCallxjm, Zool. Jalirb., vol. 34, 

 pp. 230, 231, 1913. 



This species is probably of frequent occurrence. I have the follow- 

 ing records for it : 



