On the structure of two fish tapeworms from the genus proteocephalus Weinland 1858
Journal of morphology
THIS paper consists of an anatomical and histological study of a little-known native species of PruteocephaZuus and an investigation of P. ~UicoZZis, a well-known species first described by Rudolphi, in which some additional points are elucidated. The investigations were carried on in the years 1895-97, and the paper has been accepted as the thesis for the Master's degree at the University of Nebraska. To Dr. Ward my sincerest thanks are due, not only for the material with which I worked and
... ich I worked and the use of his private library, but also for the valuable assistance which in other ways he has given me. I am also indebted to the kindness of Prof. Dr. Zschokke, of Basel, in sending to Dr. Ward. specimens of P. fiZicoZZis. In the study of the genus of fish taeniae, to which Lonnberg ('94) has given the name Ichthyotaenia, the paper by Weinland ('58) has evidently been overlooked. In this paper, which was brought to my notice by Dr. Charles W. Stiles in private correspondence, the following occurs : "Gen. 2 . Proteocep5aZus, Weinl. (The name is derived from '~p h r m , ' the ever-changing principle in the old Greek mythology, and '/ce+ah7j,' head.) The shape of the head of this genus is extremely changeable. There is no proboscis nor hooklets. The eggs are provided with two shells, the outer shell being mucilaginous. These taeniods live in reptiles and fishes. The type of this genus is Taenia ambigua Dujardin. Here belong Tueaia j%?icoZZis and Tuenia dispar." 1 Studies from the Zoological Laboratory, The University of Nebraska, under the direction of Henry B. Ward, No. 33. 337 BENEDICT. [VOL. XVI.