39 



(leiiital pores (Fig. -1) marginal, irregularly alternating; 

 marked by very large orifices and prominent lips; an- situated 

 toward the anterior part of (lie margin of (he link. Ova 

 (Fig. 5) spheroidal, with thin, smooth, colorless external 

 wall (outer diameter ,Vi to (il) niieroinilliineters), enclosing 

 a colorless, finely granular albuminous layer; within the 

 latter a yellowish embryophore, ^0 mm. in diameter, coarsely 

 granular, hexaeanthous. Embryonal hooklets measure 18 to 

 120 inieromilliineters in length. 



Tatnia euturti'x, n. s. (Plate III). 



In the small intestine of an anaconda, Eunectes murinus 

 (!'. '/,. G. Lab., 939), there were encountered seven small 

 eestodes, apparently entire, together with a half-dozen un- 

 developed strobiles and several fragments of other strobiles 

 of the same parasite (Path. Hist., 1694; No. 15, Synopsis, 

 this journal). The largest of the entire strobiles measured 

 between d..~> and 10 cm. in length and was made up of between 

 two and three hundred proglottides. The worm reaches its 

 greatest width of segments at about 7 cm. from the head, 

 where it is 2 mm. in width. All the larger specimens were 

 marked at various positions with one or more knot-like 

 swellings (probably due to contraction of the worm in life). 

 The head (Fig. 2) viewed from the front presents a crucial 

 appearance from the prominence of the suckers, measuring 

 transversely across two opposed suckers 1.5 mm. and laterally 

 across two adjacent suckers 1.3 mm. The transverse diam- 

 eter of the square front between opposed suckers measures 

 0.4 mm. The suckers, thus prominent, form the rounded 

 arms of the crucial frontal picture, each sucker being globose 

 in shape and having a lateral diameter of about 0.7 mm. 

 The orifice of each sucker is a rather wide slit, running 

 laterally; and as a peculiarity, common to all the heads 

 included in the material obtained, the outer wall of each 

 sucker is depressed and its margin turned in, forming an 



