277] PROTEOCEPHALIDAE—LA RUE 277 



the neck of this specimen is broken into several pieces, its pieces total 

 about 3-5 mm. in length. The young proglottids are about 0.05 mm. 

 long by 0.34 mm. broad. Fully mature proglottids are about 0.80 mm. 

 broad by 0.45-0.50 mm. long. Since the proglottids are attached by their 

 full width the segmentation is not distinct. 



The genital pore is marginal, situated within the first one-third or 

 one-fourth of the proglottid. Its position alternates irregularly. The 

 cirrus-pouch is about 0.265 mm. long by 0.105 mm. broad. The ductus 

 ejaculatorius forms numerous coils within the cirrus-pouch. The cirrus 

 is slender and not strongly muscular. It was not seen protruded. Testes 

 numbering about 100 are situated in the whole dorsal field between the 

 vitellaria. The coils of vas deferens could not be seen. The vitellaria 

 are lateral and the follicles seem to be scattered much as in Monticellia 

 coryphicephala. It was not difficult to determine that the bilobed ovary 

 is situated in the posterior part of the proglottid but it was impossible 

 to determine its true character. The vagina lies anterior or posterior 

 (?) to the cirrus-pouch. Uterus and eggs could not be observed in this 

 material. 



It is unfortunate that it is impossible to give a more complete 

 description than is here given. The specimens were stained with car- 

 mine which at its best, does not yield good outlines of organs in the 

 cestodes. In this case the differentiation was poor making a careful 

 study out of the question. Altho much to be desired it did not seem 

 advisable on account of the extremely fragile condition of the specimens 

 to attempt a restaining of the material, even had Professor Monticelli 

 been willing that the attempt be made. 



The study of this material has convinced the writer that this species 

 belongs to the genus Monticellia La Rue. It is closely related to M. cory- 

 phicephala but seems to be quite distinct from that species. Without 

 an examination of more material many points must remain in doubt. 



MONTICELLIA MALOPTERURI (Fritsch) La Rue 

 [Figs. 154, 166] 



1886: Taenia malopteruri Fritsch 1886:103-108 



1891 : Taenia malopteruri Monticelli 1891 



1896: Ichthyotaenia malopteruri Riggenbach 1896:267 



1911 : Monticellia malopteruri La Rue 1911 :474 



Specific Diagnosis: Characters of genus. Length unknown. 

 Breadth as much as 1.5 mm. Scolex fairly large, 0.45 mm. in breadth, 

 quadrangular, bearing four prominent suckers. Rostellum ( ?) hemi- 



