TREMATODES FROM FISHES — LINTON 115 



tions 202-242. The right testis lies close beside the left in sections 

 215-231. The ovary is subglobular and lies close to the testes on 

 their ventral border in sections 231-244. The tubular vitellaria ap- 

 pear in sections 197-304, which is from the posterior margin of the 

 ventral sucker to a point a short distance back of the middle of the 

 length of the body. The uterus, exclusive of the slender anterior 

 portion, metraterm, begins anteriorly dorsal to the posterior border 

 of the ventral sucker and extends back to about the middle of the 

 length of the body. Its voluminous folds are filled with enormous 

 numbers of small ova. The metraterm, opening behind the genital 

 papilla, at about section 80, passes back for a short distance on the 

 ventral side of the ejaculatory duct and prostate, as a muscular- 

 walled duct surrounded by gland cells. At section 113 it turns ab- 

 ruptly ventrad in front of a similar ventral turn of the ejaculatory 

 duct. At section 117 the metraterm, now near the dorsal border of 

 the ventral sucker, and with still a rather thick muscular wall, but 

 without gland cells, passes back as a straight duct ventral to the 

 seminal vesicle, to about the 193rd section, where it becomes convo- 

 luted, and is filled with ova. Ova occur also in the straight portion, 

 but not uninterruptedly. 



This specimen was somewhat macerated, giving to the cuticle in 

 some places the appearance of being finely papillate. 



From swordfish: Two, collected July 15, 1904, from stomach. 

 Length, 25 mm. ; diameter of neck, 1.5 mm., of body at level of ven- 

 tral sucker, 4.5 mm.; maximum diameter, 6.5 mm. Color pink to 

 reddish, with dark blotches, due to contents of intestine; coarse 

 transverse wrinkles on ventral side of posterior half of the body. 

 Wliile the specimen was under examination many elongated, cylin- 

 drical egg masses were ejected from the genital pore behind the oral 

 sucker ; largest ova, 0.036 by 0.025 mm. 



One, collected July 20, 1904, from stomach. General color brick 

 red, intestines showing as black lines. Neck very actively contractile, 

 changing rapidly from 2 to 10 mm. in length. The body did not 

 show much activity. Length, when fixed in alcohol, 8.5 mm. 



Two, collected July 13, 1911, from stomach. Color of body 

 magenta, black intestines showing through body wall; neck paler, 

 oral sucker whitish. Specimen, after lying in sea water over night, 

 measured 28 mm. in length ; body nearly cylindrical, 5 mm. in diame- 

 ter; neck actively extending and contracting, stretching to 9 mm. or 

 more, when it became quite slender. 



Twenty -five, collected July 20, 1912, from stomach; pink to brick 

 red; length of largest in life over 30 mm. Largest in alcohol: 

 Length, 24 mm. ; breadth, 7 mm. ; thickness, 5.3 mm. ; smallest, length, 

 11 mm. ; breadth, 2.5 mm. 



