78 PKOCEEDINGS OF THE NATIONAL. MUSEUM. vol.64. 



Prionotus carolinus. 



1907, August 10 : Amber colored cysts on viscera, 2 fish examined. 



Prionotus strigatus. 



1905, August 23: Several cysts between submucous and muscular 

 coats of stomach; associated with cysts of R. imparispine and T. 

 Msulcatus, 3 fish examined. 



Scomber scorribrus. 



1905, August 18: Cysts in stomacn wall, 3 fish examined. 



1906, August 10 : 1 cyst, with inmiature larva, 8 fish examined. 



ScomheroTnorus maculatus. 



1904, August 20 : 3 cysts on viscera, 3 fish examined. 



StenotoTTivs chrysops. 



Collected in 8 of the years from 1904 to 1920, inclusive: Small, 

 usually oval cysts on viscera. Dimensions of specimen, life, collected 

 August 17, 1904 : Plerocercus, compressed, length 2.25, breadth 1.47 ; 

 larva, length 1.57, breadth 0.45; length of bulb 0.75; diameter of 

 proboscis, including hooks, 0.07; length of longest hooks 0.03; 16 

 fish examined. On 5 dates in July, 2 to 20 cysts, on viscera, and in 

 intestine, where probably introduced with food ; 10 dates in August, 

 1 to numerous, on viscera, 93 fish examined; 1 date in September, 1 

 oval cyst, 2 fish examined. 



Vrophycis chuss. 



Collected in 3 of the years from 1903 to 1910, inclusive: Sm.all 

 cysts of various shapes on viscera. On 1 date in May, small cysts 

 on the intestine; on 1 date in September, a few small cysts oji 

 viscera, 3 fish examined ; 4 dates in October, cysts of different shapes, 

 in one case associated with immature nematodes, on viscera and 

 mesentery, 26 fish examined ; 3 dates in November, numerous on one 

 date, 1 fish examined, few on one date, 3 fish examined, 1 on one date, 

 12 fish examined. 



Vrophycis tenuis. 



1911, August 4: Few small cysts in submucosa of stomach, 3 fish 

 examined. 



RHYNCHOBOTHRIUM SPECIOSUM Linton. 



1887, lihynchobothrium, species, p. 195, pi. 10, figs. 1-6. 

 ISQlb, pp. 801-805, pi. 64, figs. 13-14; pi. 65, figs. 1-7. 



1900, p. 278. 



1901, pp. 413, 443, 447, 451, 455, 458, 460, 463, 473, 482, 488. 

 1905, pp. 332, 369, 373, 384. 



1907(f, p. 98, pi. 5, figs. 32-35. 

 19086, pp. 176-177, pi. 2. figs. 78, 79. 

 1921, pp. 30, 31. 



Tlie adult of this species has not yet been noted. The larval 

 cestodes which I have recorded under this species are southern forms. 



