686 ON NEW TREMATODES FROM REPTILES. 



with spines. Intestine with large pharynx and wide diverticula 

 which extend near bnt not quite to the posterior end. Ex- 

 cretory vesicie Y-shaped with numerous side twigs. Genital 

 aperture median, a short distance in front of the ventral sucker. 

 Cirrus-pouch sliort and plump ; vesicula and pars prostatica short ; 

 cirrus long. Receptaculum seminis absent ; Laurer's canal 

 present. Yolk-glands extensive, dendritic, peripheral. Uterus 

 forming a small convoluted knot at the posterior end of the 

 body, with a wide unconvoluted ascending limb. Vagina long 

 and very muscular. Ova about "035 mm. long. 



Type, B. conferta^ sp. n. 



The type-specimens of these species are deposited in the 

 Museum of the Royal College of Surgeons, London. Co-types at 

 the Zoological Society's Gardens. 



References. 



(1) M. Bkaun, 1 902. — Fascioliden der A'^dgel. Zoolog. Jahrbiicher ; 



Abt. f. Syst. xvi. pp. 64-67. 



(2) T. Odhner, 1910. — Noi'dostafrikanische Trematoden, grossten- 



teils vom Weissen Nil. i. Fascioliden. Results of the 

 Swedish Zoological Expedition to Egypt and the White 

 Nile, 1901. No. 23 A, pp. 22-76. 



(3) J. Poirier, 1886. — Trematodes nouveaux ou pen connus. 



Bull. Soc. Philomat. Paris, ser. 7, vol. x. pp. 24-6. 



(4) H. S. Pratt, 1903. — Descriptions of Four Distomes. Mark 



Anniversary Volume, pp. 23-38. 



(5) J. Stafford, 1905. — Trematodes from Canadian Vertebrates. 



Zool. Anzeiger, xxviii. p. 691. 



EXPLANATION OF THE PLATES. 



The following letters applj' to all the figures : — 



D.St. Yolk-glands. | R.S.Ut. Receptaculum seminis 



Ex. Excretorj' vesicle. uterinum. 



^.r.T. Excretory tubules. | T., Tj, T... Testes. 



J. Intestinal diverticula. ! TJt. Uterus. 



K.St. Ovary. | Vg. Vagina. 



P.Fr, Pars prostatica. | V.8. Vesicula seminalis. 



Plate XXVII. 

 Lechriorchis validus. 



Pig. 1. Young specimen. Ventral view. X 25. 



2. Adult specimen. Ventral view. X 20. 



3. Transverse section near ends of intestinal diverticula. X 53. 



4. Transverse section, immediately in front of ventral sucker. X 50. 



5. Ovum. X 500. 



Plate XXVIII. 



OcJietosoma formosum. 

 Fig. 6. Ventral view. X 30. 

 7. Ovum. X 560. 



Dasymetra cmiferta. 

 Pig. 8. Ventral view. X 30. 



9. Transverse section, a little in front of ventral sucker. X 60, 

 10, Ovum. X 500. 



