ART. 21. PARASITES OF SHARKS AND SKATES LINTON. 93 



Anguilla rostrata. 



1912, July 31 : Cysts in stomach wall, 9 fish examined. 



Cynoscion regalis. 



Collected in fi^^e of the j^ears from 1903 to 1910, inclusive. In all 

 cases encysted on or in the submucous coat of the stomach, often in 

 the submucosa of the intestine. Found in 54 of the 59 fish examined. 

 On 8 dates in July, few to numerous cysts, 37 fish examined ; 5 dates 

 in August, few to numerous cysts, 22 fish examined. 



Lophius piscatoiius. 



1905, August 23 : Whitish, thick- walled cysts found in the stomach 

 wall on this date resemble this species, but are much larger. Scolex, 

 length 4, breadth 3 ; diameter of proboscis, with hooks 0.21, excluding 

 hooks 0.14; length of longest hooks 0.056. 



1910, July 29: Few cysts in stomach wall. Scolex, length 2, 

 breadth 1.30; diameter of proboscis, including hooks, 0.08, excluding 

 hooks, 0.05 ; length of longest hooks, 0.02. 



Lophopsetta maculata. 



1910, July 25: 1, encysted in mesentery; collected by Dr. C. W. 

 Hahn. 



Meriuccius hilinearis. 



1910, July 2: Several cysts in wall of intestine, 12 fish examined. 

 August 16 : Several cysts in wall of stomach, 12 fish examined. 



Microgadus tomcod. 



1910, July 13 : 1, encysted on viscera ; collected by Dr. C. W. Hahn. 



Paralichthys dentatus. 



Collected in 8 of the years from 1903 to 1920, inclusive: Usually 

 encysted in submucosa of stomach and intestine, found also under 

 serous coat of stomach, on gills, in post-branchial cavity and throat. 

 Found in 54 of the 60 fish examined. On 1 date in June, many 

 cysts ; 9 dates in July, few to many cysts, 12 fish examined ; 13 dates 

 in August, few to many cysts, 44 fish examined ; 1 date in September, 

 several cysts, 1 fish examined; 2 dates in October, several to many 

 cysts, 2 fish examined. 



(U.S.N.M., Helm. Coll. 7724.) 



PollacJiias virens. 



1913, June 30 : Few cysts in stomach wall, 14 fish examined. 



Pomatomus saltatrix. 



1904, July 15 : Numerous, encysted in submucosa of stomach. 



Poronotus triacanthus. 



1904, August 11 : 1 cyst, from viscera. 



