164 TAPE WOE MS OF HAKES AND EABB1TS STILES. VOL.XIX. 



not feel justified in utilizing liis work as basis for more than a provi- 

 sional generic diagnosis for Bertia until the type species of the genus 

 (B. studeri) can be studied more in detail. Nor do I consider the data 

 at hand sufficient to justify a worker in suppressing Railliet's genus 

 Andrya in favor of the earlier genus Bertia. From the very limited 

 material and data at hand, I am inclined to believe that Anoplocepkala*, 

 Bertia , and Andrya will all eventually be recognized as good genera, 

 established upon well-recognized anatomical characters, but for the 

 present, although Anoplocephala unquestionably stands, Bertia and 

 Andrya can be accepted only as provisional genera, and as convenient 

 means of classification. The final acceptance of the genera can follow 

 only after examination of a larger series of specimens representing, 

 if possible, more species 1 than are at present included under Andrya 

 and Bertia. 



To utilize the generic terms Andrya and Bertia provisionally is cer- 

 tainly better than to place the forms in the same genus with Tcenia 

 solium. 



BERTIA PLASTICA (Sluiter, 1896), Stiles, 1896. 



1896, Tcenia plastica, Sluiter, Centralbl. f. Bakteriol., Parasitenk. u. Infektionskr., 

 I Abt., XIX, No. 24, pp. 941-946, figs. 1-6. June 30, 1896. 



During the proof reading of this revision an article has appeared by 

 C. Ph. Sluiter, describing a new species of tapeworm (Tcenia plastica} 

 from Galeopithecus volans. Sluiter is inclined to consider this new para 

 . site as very closely related to Anoplocephala plicata, A. mamillana, and 

 A. perfoliata, all of which he retains as members of the genus Tcenia. 



Unfortunately, several important points in the topographical anatomy 

 have been omitted by the author, but his description and figures show 

 that Tcenia plastica is much more closely related to Meyner's Tcenia 

 (Bertia) mucronata than it is to the tapeworms of horses, on which 

 account I transfer it to the genus Bertia. From Sluiter's description 

 and figures, the following specific diagnosis is written : 



Diagnosis. Bertia plastica (Sluiter. 1896), Stiles, 1896: Strobilamore 



1 Gottheil (1887) described two other cestodes, which may have some bearing upon 

 the question, with the following diagnoses : 



( Tcenia) No. 1. Length 20 cm., breadth at largest segment 3.5 mm. Head globular, 

 four suckers, no rostellum, and no hooks. Neck extremely fine and filamentous 2.5 

 cm. long. Proglottides slowly increase in size, greatest breadth being only attained 

 15 cm. from head. Sexual orifices at the sides. Segments oblong, 3.5 mm. by 0.75 

 mm. From Macaque monkey (Macacus cynomolgm (Schreber) ). 



(Tcenia) No. 2. Length of largest specimen, 15 cm. Breadth at largest segment, 

 8 mm. Head large and clubbed, four suckers, no rostellum or hooks; neck short 

 and thick; proglottides rapidly increase in size after the first inch and attain their 

 full diameter from head, 7.5 cm. mature proglottides. They overlap each other at 

 their posterior angles. Segments mature measure 8 by 4.5 mm. 



From Macaque monkey (Macacus cynomologus (Schreber) ) and Weeping Capuchin 

 (Cebus capucinus (Linnseus) ). 



From the descriptions and figures it is very possible that these two forms are 

 anoploceph aline cestodes, but Gottheil gives no characters which will aid in defi- 

 nitely determining the question at hand. 



