233] PROTEOCEPHALIDAE—LA RUE 233 



determined that there was no rostellum. La Rue (1911:481) included 

 this form in a list of species of Ophiotaenia. 



This study is based on material which Professor H. B. Ward 

 secured for the writer's study from Professor Parona. Professor 

 Parona's material bore the label, "T. (Oochoristica) racemosa S. Paulo, 

 race. A. Lutz." This is evidently the material on which Parona (1901) 

 based his report. There he stated that it came from Bothrops lanceo- 

 latus L. The material consisted of seven or eight pieces to one of which 

 a head was attached. The head was cleared in glycerine and studied 

 in that condition while some of the smaller pieces were stained and 

 mounted as toto preparations. The identification of the material was 

 made from these preparations. The report is also based upon data 

 secured from the papers of Barrois (1898), Marotel (1899), and 

 Schwarz (1908). 



The longest piece which the writer observed measured 270 mm. long 

 by 2.0 mm. broad. Barrois (1898) states that he observed a length of 

 35-80 cm. by a breadth of 0.97 mm. for this species. Marotel's (1899) 

 specimens measured up to 35-40 cm. long by a maximum breadth of 1.2 

 mm. Schwarz (1908) reported a breadth of 1.5 mm. The strobila is 

 made up of many proglottids, according to Barrois as many as 289. 

 The proglottids are closely joined to one another. As a rule no inter- 

 segmental furrows can be seen with the unaided eye. In a single piece 

 the strobila was strongly contracted and here the strobilation was evi- 

 dent. The surface of many of the proglottids is thrown into numerous 

 longitudinal folds. 



The scolex is club-shaped according to Barrois and Marotel, sphe- 

 roidal according to Schwarz. The figures of the head as delineated by 

 Marotel and Schwarz are reproduced (Figs. 155, 156). Barrois and 

 Schwarz reported that there was no fifth sucker and no rostellum while 

 Marotel thought that the slight elevation at the middle of the head 

 (Fig. 156) was a rudimentary rostellum. He saw no fifth sucker. 

 Marotel states that the globular suckers are directed anteriad. The 

 head (Fig. 11) which the writer observed was cleared in glycerine. It 

 presents a somewhat tetragonal face with a small elevation at its center 

 which is not a rostellum and upon which there is no fifth sucker. The 

 suckers are placed in the corners of the anterior face and they are 

 directed anteriad. Slight grooves or wrinkles which do not extend to 

 the apex partially divide the head into quadrants. The suckers are 

 nearly round in outline and they lack any trace of the inturned lower 

 margin which is a characteristic of the suckers of Crepidobothrium 

 gerrardii. Suckers measure 0.39-0.408 mm. in diameter while the open- 

 ings of the suckers measure 0.17-0.185 mm. in diameter. The sucker 



