138 ANIMAL PARASITES. 



the legs, upon which, in the patient here referred to, they imme- 

 diately deposited their eggs, which appeared like white, damp, 

 sand, plagued the patient most. 



Besides those which passed spontaneously, 5 — 15 proglottides 

 passed daily with the feces from this patient. As these also 

 immediately laid their eggs, the fasces looked as if sprinkled with 

 white sand. With such quantities, it is perfectly justifiable to 

 assume the number 20 as the daily average passed. 



Genitalia. — The pori genitales are extremely large and swollen, 

 so that it is very difficult to discover the penis. In this, how- 

 ever, we may succeed sometimes by carefully removing the 

 swollen part, and then trying to press out the penis. It is 

 thicker and shorter than that of T. solium, and passes posteriorly 

 into a very thick seminal cord, which may be disentangled from 

 the segment for a long way, and does not lie in such close con- 

 volutions as that of T. solium. The sac of the penis resembles 

 that of the other Teenies, but is of very large size, namely O'OIO"^ 

 0-1 millim.in breadth at the widest, and 0-028"' = 0063 millim. 

 at the narrowest part, and 0-175'" = 0'395 millim. in length. 

 The separate convolutions of the seminal cord are - 010 — 0-017" 

 = 0-023 — 0-039 millim. in thickness. The penis itself is 0-140'" 

 = 0-316 millim. in length ; at its apex, about 014/"= 0031 

 millim. in breadth, and at its base about 0028'" =0-063 millim. 



Female generative organs. — The vagina, which is enlarged 

 (0-031"'= 0-071 millim.) at its external orifice, and diminishes in 

 its further course to 0017'" = 0-039 millim. is strongly pig- 

 mented, and opens in the lower third of the segment into the 

 uterus, with a dilatation of 0-033'"= 0*079 millim.; it runs at 

 first along the lower side of the seminal cord, and parallel to it, 

 until it suddenly bends downwards. The lumen of the sheath in 

 its middle measures 0-037'"= 0-015 millim. 



The uterus is a thick-walled, straight, median canal. In 

 spirit preparations, especially, with thick specimens, the canal, 

 when observed in its whole extent, forms a kind of pearl neck- 

 lace-like string, or a continuous tube, round which the sides of 

 the worm enfold themselves. This tube, which appears to be 

 continuous, and which I regard as a canal, induced me to call 

 the species T. mediocanellala. 



The numerous lateral branches of the uterus spring opposite to 

 one another, and run parallel and perfectly undivided nearly into 

 the margins of the segments, when they either terminate in a 



