Occasional Papers of tJic Museum of Zoology 7 



No. 12.1470 of Ward's collection. Five suckers are visible 

 but the fifth is too indistinct to measure. One of the suckers 

 measures 0.062 mm. and its cavity, 0.039 rnm. in diameter. No 

 mature or ripe proglottids are present. 



Specimen 12.1481 and 12.148^ of Ward's collection are so 

 nearly alike that data will be given only on No. 12.148. un- 

 less otherwise stated. The only sucker measured on specimen 

 No. 12.1480 is 0.065 i"*!"^- ill diameter. On specimen No. 12.- 

 1481 the suckers measure 0.051 to 0.062 mm., the neck, 1.41 

 mm. long by 0.260 mm. wide. Mature proglottids measure 

 0.446 by 0.498 mm. long; ripe proglottids, 0.461 by 0.595 "i"^- 

 to 0.446 by 1. 361 mm. long. A terminal proglottid is present. 

 Its breadth is 0.446 and its length 1.265 mm. The position of 

 the genital pore occurs from 0.3 to 0.46 of the length of the 

 proglottid from the anterior end, with the average of ten fall- 

 ing at 0.35 of the proglottid length. The average length and 

 breadth of ten cirrus-pouches is 0.112 and 0.047 i^i^i- respec- 

 tively. The minimum length and breadth in this lot of cirrus- 

 pouches is 0.102 and 0.039 i™^^- respectively, while the max- 

 imum length and breadth in the lot are 0.021 and 0.056 mm. 

 respectively. 



The relations of the vagina to the cirrus-pouch are the same 

 as in the type. In the region just anterior to the ovary the 

 vagina is thrown into several coils. Counts of the number of 

 uterine pouches in six old elongated proglottids were made. 

 These counts are expressed in the form of fractions, the num- 

 ber of pouches on the porose side (side of the genital pore) be- 

 ing given as the numerator and the number of pouches on the 

 aporose side as the denominator. The counts follow: ii/i4' 

 ii/ii, 11/13, 10/14, 14/14, 15/16. It will be seen that there 

 is a tendency for the greater number of pouches to occur on 

 the aporose side. The ovarian lobes in quadrate proglottids are 



