1920.] T. SouTHWEi,i< & B. Prashad : Phyllohothrium. 5 



cies has not been recorded since. His description is somewhat in- 

 complete and his figures are not quite clear. We, therefore, figure 

 the essential features of the anatomy of the worm again. 



Three of our specimens, which were preserved in spirit, 

 measure 5 cms. in length and the fourth measures 6 cms. The 

 breadth of the posterior segments is 2 mm. and the length 3 cms. 



All the four specimens have four supplemental discs in each 

 case. These suckers appear to be formed b}^ the fusion of a por- 

 tion of the edge of the bothridium, and, in a casual examination, 

 the frilled edge may occasionally be mistaken for a sucker, but in 

 the specimens before us there are distinct suckers in each case. 

 Linton (5) states that his P. folintum has the bothridia pedicelled, 

 in marginal pairs, a feature which would require a modification of 

 the generic characters for including this peculiarity. In our speci- 

 mens the bothridial pedicel is very short, and the bothridia may 

 be described as practically sessile. No observations are available 

 regarding these structures in the living specimens. 



The anatomical details of a ripe proglottid of this species are ex- 

 actly similar to those given for P. laduca except that the vitteline 

 glands in P. joliatum are confined to the lateral fields lying external 

 to the excretory tube. Linton described the cirrus of P. foliatuni as 

 being echinate. In none of our worms was the cirrus protruded, 

 but we were able to ascertain that no spines occur on the cirrus in 

 these specimens This character, therefore, appears to be variable 

 in P.ioliatum, although usually it is a constant feature in other 

 species. 



Phyllobothrium pammicrum Shipley & Hornell. 

 (Plate I, fig. 4.) 



Over a dozen immature specimens from Urogymnus asperrimus , 

 Ceylon Pearl Banks, February i6th, 191 1. 



Thirteen specimens from Hypolophus sephen, main area of 

 Chilka Lake, December 191 1. 



Shipley and Hornell described this species from the intestine 

 of Carcharias melanopteriis caught at Dutch Bay, Ceylon, in 1905. 

 They had only two specimens. In the original description only 

 the external anatomy was dealt with. 



One of us (14) recorded the occurrence of the same species in the 

 intestine of Hypolophus scphen , whence 13 specimens were obtained. 

 At the same time a short account of the anatomy was also given. 

 We have, besides, specimens from the intestine of Urogymnus as- 

 perrimus from the coast of Ceylon. 



The length of the various specimens varies from 4 to 5 mm., 

 the maximum breadth up to. 3 mm., and the last segment is nearly 

 I mm. long. 



The head, which we figure, bears four sessile bothridia which 

 have slightly thickened and crisped edges. There are no accessory 

 suckers, and the neck is short. 



There are a large number of testes of a fair size disposed on 

 either side of the longitudinal axis of the proglottid. The cirrus- 



