214 S. J. JOHNSTON. 



very small. The oral sucker measures 0*291 mm. in diameter, 

 only one-sixth of the ventral, which is 1*75 mm. long by 

 0*97 mm. broad. The suckers are 0*77 mm. apart. The 

 fork of the intestine is just on a level with the anterior 

 edge of the ventral sucker, and the genital pore stands a 

 little (0*02 mm.) in front of this. 



The testes are large oval bodies with indented edges 

 lying close together in the middle of the body, close to them 

 the oval ovary lies in the middle line, but obliquely disposed* 

 The two testes are equal in size and measure 1 028x0*485 

 mm. The ovary, 0*388 x 0*291 mm., is much smaller. The 

 proximal part of the uterus is dilated to form a relatively 

 very large receptaculum seminis uterinum, which lies for 

 the most part posterior to the ovary and gland of Mehlis- 

 The eggs are relatively broader than in P. acuminatus r 

 measuring 0*107 x 0*069 mm. 



Subfamily PLAGIORCHIIN^] (Lepoder matinee). 



Plagiorchis spatulatus, sp. n. (Pig. 11.) 



Diagnosis. — Body spathulate and flat; size small, less 

 than 1 mm. long. Integument spiny. Suckers large, oral 

 greater than the ventral. Testes equal in size, lying one 

 behind the other in the posterior half of the body. Ovary 

 in front of posterior testis. The three gonads separated 

 by loops of uterus. Yolk glands in the lateral fields; not 

 crossing the intestinal limbs except behind the testes. 

 Eggs 0'031 x 0*017 mm. 



Host. — Anthus australis, in the intestine. 



Type specimen in the Australian Museum, No. W. 434. 



The specimens of this worm in my possession were 

 collected by my friend Dr. T. Harvey Johnston, of the 

 University of Queensland, at Caloundra in that State. It 

 was obtained from the intestine of the Australian Pipit, 

 Anthus australis, and is quite a small worm, flat and 



