38 UNIVERSITY OF WISCONSIN STUDIES 



TAPEWORM CYST No. 4 



Two small cysts, .3 mm. long (Fig. 13A) were taken from the 

 peritoneum of an eel (Symbranchus marmoratus Bloch) 130 mm. 

 in length, caught in the soft bottom of Lake Valencia with a 

 mud dredge at a depth of 14.5 m. There are four suckers in 

 the cyst and the wall is thin. 



TAPEWORM CYST No. 5 



Groups of small cysts were found in the peritoneum of 

 sardinas, Astyanax bimaculatus (L.), caught by Isla del Euro, 

 July 10; also in the same situation in top-minnows, Lebistes 

 reticulatus (Peters), taken by Isla del Euro July 11 and in 

 Lake Valencia near Maracay July 24. 



The cysts are nearly globular (Fig. 13B) and contain a 

 larval tapeworm, folded once. They measure .36 mm. jn 

 diameter. 



CYSTS OF UNKNOWN PARASITES 



Cyst No. 6 



An elongated cyst (Fig. 13C) was found in the peritoneum 

 of a Chusco, Aquidens pulcher (Gill), caught at the mouth of 

 the Rio Bue, July 19, 1918. It measures .29 mm. in length. 



Cyst No. 7 



Globular cysts occurred in the fins of two sardinas, Astyanax 

 bimaculatus (L.), caught in the mouth of the Rio Bue, July 20, 

 1919. These dried up on account of a crack in the vial in 

 which they were preserved. They measured about .42 mm. 

 in diameter and are perhaps very young cysts of Parspina bagre. 



Cyst No. 8 



Globular cysts, .1-.17 mm. in diameter, were found in the 

 peritoneum of chuscos, Aquidens pulcher (Gill), by Isla del 

 Euro, July 9; and near Maracay in Lake Valencia at a depth 

 of 16 m., July 26. 



' Cyst No. 9 



A chusco, Aquidens pulcher (Gill), caught in Lake Valencia, 

 July 9, at a depth of 16 m., had the liver filled with minute cysts 

 .017 to .009 mm. in diameter. 



ACANTHOCEPHALA 



Dr. H. J. Van Cleave has kindly described the acantho^ 

 cephalans, reporting two species. 



