E ii(h>i>(i nis'ites. 60V) 



mill, iiiaxiiiniiu (averajjfe .75 iniii.). female .8 iniu. iiiaximiini 

 (with averafre .75 mm.) to 1.29 mm. (with average 1 mm.). The 

 diameter of tlie male is nearly constant for the whole length, 

 while that of the female is greatest in the middle region of the 

 liody. tajiering to each end, but anteriorly truncate and jios- 

 teriorly pointed. No distinction in size between the head and 

 the rest of the body. Buccal cavity cup-shaped, widest near 

 anterior end. Dorsal gutter hemispherical and slightly grooved 

 in transverse section. The single tooth at the base of the dorsal 

 gutter shows the double earlike lobes typical of tliis species. 

 The excretory pore and cervical papillae are rarely seen, but 

 when visible are in the region of the nerve ring. The length 

 of the oesophagus is — male 1.17 mm., female 1.3 to 1.7G mm. 

 (averaging 1.5 mm.). Its maximum diameter is -male ..'5 mm., 

 female .3 to .5-"5 mm. (averaging .-li mm.) Tlie bui's.i of the 

 male exactly resembles that figured by Looss ('01, pi. ii., fig. 18). 

 The feuuile opening varies in position somewhat, being situated 

 from 5.1J5 mm. to 7.48 mm. from the posterior extremity. As 

 stated above, the tail is pointed, differing in this from Srleros- 

 ti.iii a ni' fclentatuiii. From this descrition it nuiy be seen that 

 these individuals exactly agree with the description given by 

 Looss of Scltrostoinuin vulgare, in all respects excejit some of 

 the measurements, where slight differences are found. Thus in 

 some of the females, the vulva is somewhat nearer the posterior 

 end, in the male the length of the oesophagus is slightly less, 

 and the maximum diameter of the oesophagus is a little greater 

 than those quoted by Looss for >SV/. vulgare. But these points 

 are not by any means sufficient to invalidate this identification, 

 in view of the great number of details in which there is a 

 complete agreement with the diagnosis given by Looss. 



Host. — Horse: stomach (and intestines (?)). 



Locality. — Horsham, Victoria, June, 1903. 



No previous record for Australia. 



No. 3. — Triodontophorus intermedius, u. .sp. 



(See Plate XXIX., Figs. 1, 2, 3). 



Ttiis species in some respects combines the characters of 

 Triodoiitophoni< iiiinur and Tr. serratus, Looss ('01, p. 78); in 



