﻿CESTODE PARASITES OF MAN. 547 



DISCUSSION. 



■ The type specimen, although preserved for about two years in for- 

 malin, was in good condition, except that it was considerably, although 

 apparently uniformly, contracted. In the description of the specimen, 

 actual measurements are given, but in stating dimensions in the specific 

 diagnosis I have endeavored to make a safe allowance for this contracted 

 condition of the specimen and for individual differences which other 

 specimens may present. While the examination of further material may 

 lead to changes in the diagnosis of the species, either by the elimination 

 of some characters now included or by the addition of new ones, it is 

 believed that the principal morphological features described, namely, the 

 transversely elongated ovarian lobes and vitellogen gland, the V and 

 spiral formation of the uterine stem, the compact structure of the 

 gravid uterus, the loop of the vas deferens, the length of the strobila, 

 and the relative length and breadth of the individual segments, form a 

 combination of characters which could neither be accounted for by 

 peculiarities in the living individual nor by its jaost-mortem distortion. 

 We have, upon the presence of the rudimentary unarmed rostellum, 

 placed the species tentatively in the subgenus Tceniarhynclms Wein- 

 land, 1853, pending the examination of the material by a systematic, 

 zoologist. 



