TREMATODES FROM EISHES — CLINTON 85 



lobed. The diffuse vitellaria extend to, and often in front of the 

 ventral sucker. 



Hosts. — Sand launce {Aminodytes americanus) , squeteague 

 {Cynoscion regalis), kingfish {Menticirrhus saxatilis), rudderfish 

 {PaUni(>richthys ferciformis)^ harvestfish {Peyrilus paru)., bluefish 

 {Pomatomus saltatrix)^ dollarfish {Poronotus triacanthics) , southern 

 porgy {^tenotomies chrysops), cutlassfish (Trichiurus lepturus). 



Record of collection's. — From sand launce: Two, collected July 5, 

 1912. Measurements in balsam: Length, 0.91 mm., breadth, 0.29 

 mm.; diameter of oral sucker, 0.07 mm., of pharynx, 0.04 mm., of 

 ventral sucker, 0.05 mm. ; length of prepharynx, 0.02 mm., of esoph- 

 agus, 0.03 mm.; ova, 0.060 by 0.036 mm. In one of these the oral 

 sucker was retracted. Metraterm with relatively thick walls; gen- 

 ital pore at anterior border of ventral sucker nearly median; glob- 

 ular concentric bodies in excretory vessels; vitellaria from posterior 

 end along margins to a level halfway between ventral sucker and 

 pharynx. Two (U.S.N.M. No. 8267), collected November 1, 1913. 

 Thirty fishes examined. Length in balsam, 2.24 mm.; breadth, 0.66 

 mm. Seven, collected October 20, 1914. One hundred fishes 

 examined. 



From squeteague: Bull. U. S. Fish Comm. for 1899, p. 460, 1901. 



From kingfish : Bull. U. S. Fish Comm. for 1899, p. 462, 1901. 



From rudderfish: Distomes from this host were first described 

 under the name Distomum pyriforme.^ see above. Fifteen, collected 

 August 18, 1903; three fishes examined; largest specimens, life, 

 length 1.12 mm., smallest 0.24 mm. Forty (U.S.N.M. No. 8268), 

 collected August 7, 1928. Sm^all, densely and finely spinose, spines, 

 more or less evanescent. Ovate to elliptical-oblong; suckers nearly 

 equal; prepharynx and esophagus each as long or longer than 

 pharynx; intestines reach nearly to posterior end; genital pore in 

 front of ventral sucker, a little to left of median line; cirrus-bulb 

 dorsal to ventral sucker, its posterior end, enclosing a seminal vesicle, 

 extending back of the ventral sucker; behind the cirrus pouch a 

 second seminal vesicle connected with it by a short vas deferens; 

 testes two, one following the other with little or no interval between, 

 in posterior third of body ; ovary in front of first testis, a little to the 

 right of the median line, not lobed; uterus in front of ovary, ova 

 few and relatively large; metraterm on left side of cirrus bulb; 

 vitellaria from posterior end to, and in some cases in front of, ven- 

 tral sucker; shell gland on left of ovary; yolk reservoir along 

 anterior border of first testis; seminal receptacle between first testis 

 and ovary, dorsal to yolk reservoir. Measurements in balsam: 

 Length, 0.84 mm.; breadth, 0.22 mm.; oral sucker, length, 0.42 mm., 

 breadth, 0.59 mm.; pharynx, length, 0.36 mm., breadth, 0.39 mm.; 



