384 



BULLETIN OF THE BUREAU OF FISHERIES. 

 Cynoscion regalis, Sgueteague, Weak-fish, Gray Trout. 



ACANTHOCEPHALA. 



1. Echinorhynchus pristis Rudolphi. 



1901.— July 17, 1, a female. There was also found in this lot the posterior end of a female of this 

 genus which was provided with papillae. [Figs. 15, in.] 



2. Echinorhynchus sagittifer Linton. 



1901. — August 6, 1, immature, from mesentery. 



NEMATODES. 



3. Ascaris sp. Immature. 



1901.— July 17, several on viscera; type with diverticulum on both tesophagus and intestine. 

 There were also in this lot numerous yellowish cysts on the mesentery. No entozoa were found in 

 them, hut they resemble cysts from which immature nematodes have been obtained on many 

 occasions. July 19; numerous in mesentery. Same type as above; one examined carefully showed 

 the rudiments of jaws characteristic of Ascaris. .Many cysts also in the mesentery, some if not all 

 of which were due to these nematodes. July 22; 1. July 29; few. Aug. 6, 7, 12; few on each 

 date. 



1902. — July H», numerous, in yellowish cysts on viscera; the larger specimens with dark-brown 

 intestine. July 19; numerous, in waxy cysts on viscera; intestine red-brown. 



CESTODES. 



4. Scolex polymorphus Rudolphi. 



1901. — July 6, many, from alimentary canal; two pigment spots on neck. July 10; in gall 

 bladders, not numerous; pigment spots; rudiments of costse on bothria. July 15; larger forms in 

 cystic duct; smaller in alimentary canal. July 17;- numerous, from cystic duct. July 22; few in 

 gall bladders. July 29; few. July 30; very numerous in cystic duct. Aug. 1, fi; many in cystic 

 duct. Aug. 12, few. 



1902.— July 16, Aug. 13, 18, 19, 20, numerous, in cystic duct and intestine, those in the latter 

 about one-sixth as long as those from the cystic duct. 



5. Rhinebothrium sp. 



1901.— July 22. This agrees with type found in the toad-fish. 



6. Rhynchobothrium sp. 



1901. — Aug. 7. Cysts in clusters on mesentery. Type with long neck and minute hooks. 



7. Rhynchobothrium speciosum Linton. 



1902.— July lti, several. 



8. Otobothrium crenacolle Linton. 



Encysted in walls of alimentary canal. 

 1902.— Aug. IS. few. Aug. 19; several. 



