188 S. J. JOHNSTON. 



specially characteristic are printed in italics. In addition 

 to this diagnosis a sufficiently detailed account of its 

 anatomy has been given, and its relationships to other 

 forms discussed. 



PART I. 

 Family FASCIOLIDiE. 



Subfamily CCENOGONIMINJE. 



Scaphanocephalus australis, sp. n. (Pig. 1 and la.) 



Diagnosis, — Body like S. expansus in shape, but shorter 

 and broader, yet with larger suckers and pharynx. Integu- 

 ment with a few small spines. Testes not deeply lobed, 

 but fairly solid bodies, with their surfaces marked into 

 low ridges by shallow grooves. Eggs larger, but especially 

 broader than in S. expansus, from 0*024 X 0*019 mm., to 

 0*032 x 0*0213 mm. 



Host — Haliaetus leucogaster, in the small intestine. 



Type specimen in the Australian Museum, Sydney, 

 No. W. 426. 



In June 1910, at Terrigal, a coastal village fifty miles 

 north of Sydney, I collected three specimens of a trematode 

 from the small intestine of a white-bellied sea-eagle, 

 Haliaetus leucogaster, which appeared at once to be very 

 closely related to, if not identical with Scaphanocephalus 

 expansus, Orepl., described by J'agerskiold (l9) and obtained 

 from the stomach of a sea-eagle near Tor, on the Red Sea. 

 A more exhaustive examination with the microscope 

 revealed a number of characteristic differences in the 

 Australian form, which I now describe as a new species 

 under the name of S. australis. My specimens, after an 

 examination with a simple lens in a living state, were 

 shaken up in salt solution, fixed in sublimate acetic and 

 transferred to 70% alcohol. One specimen was mounted 

 whole, and the other two cut into sections. Both in the 



