EXPLANATION OF PLATE II. 



Fig. 1. Phylloiothrium thysanocephalum sp. now Head and part of nock of adult, nat- 

 ural size, length of specimen 1 meter. 



Fig. 2. Part of body of same, showing the beginning segments, enlarged 2 diam- 

 eters. 



Fig. :'«. Segments near posterior end of adult, enlarged 2 diameters. 



Fig. 4. Mature free proglottis, enlarged 2 diameters. 



Fig. . r >. Mature free proglottis, flattened under compressor, enlarged 4 diameters. 



Fig. 6. Posterior segments of a specimen measuring 290 mm in length, enlarged ~' 

 diameters. 



Fig. ?. Head and neck of young specimen, enlarged 1- diameters. 



Fig. lit. Front view ofrostellum, enlarged 18 diameters. 



Fig. 76. Side view of same, enlarged is diameters. 



Fig. 8. Young specimen, natural size. 



I'll .. '.I. Transverse sect ion through middle of head of a young specimen, length . r >S m ' n , 

 enlarged 9 diameters. 



Fig. 10. Transverse section through anterior third of head of adult, enlarged 9 diam- 

 eters. 



Fig. II. Transverse section through neck a short distance back cf head, adult, en- 

 larged 6 diameters. 



Fig. 12. Transverse section through neck of young, near the head, enlarged 9 diam- 

 eters. 



Fig. 13. Spongiobothrium varidbjXe gen. et sp. nov., outline of strobile with regular 

 slender segments, enlarged . r > diameters. 



Fig. 14. Outline of another specimen with shorter and more irregular segments, en- 

 larged 6 diameters. 



Fig. 1">. Side view of head, neck, and anterior segments, edges of hothria contracted, 

 enlarged 10 diameters. 



Fig. 16. Front view of head of another specimen, with two hothria expanded, en- 

 larged 10 diameters. 



Fig. 17. Three mature segments, enlarged ."> diameters. 



Fig. IS. Median segment, enlarged 'JO diameters. 



Fig. 10. Mature segment, enlarged 20 diameters. 



Figures 3, 4, (>, 7, 8, anil 15 from life ; others from alcoholic and mounted specimens. 

 All figures made by Mrs. Edwin Linton. 



502 [50] 



