BY S. J. JOHNSTON. 291 



Hyla dentata. — Only six specimens of this rather rare frog 

 were obtained, and no trematodes found, but nematodes were 

 obtained from the intestine of one. 



Hyla citt'opns. — Only two specimens of this comparatively rare 

 frog were obtained; and from the duodenum of one, two tiukes 

 (Mesoccelium oligoon) were obtained. 



Hyla eioingii is a fairly common frog near Sydney, and from 

 32 specimens, two trematodes were obtained, one ( M. megaloon) 

 from the intestine, while another specimen contained a single 

 Diplodiscus in the rectum. Nematodes were also obtained from 

 the intestine and rectum 



Hyla aurea is the commonest frog in the neighbourhood of 

 Sydney, and over 300 specimens were examined for entozoa. 

 From the lungs, 59 specimens of Pneumomeces were obtained; 

 they occurred sometimes singly in one or each lung; in one case, 

 as many as 10 were found in the two lungs. In the anterior part 

 of the intestine of one frog, 35 specimens of Dolichosaccus were 

 found; and one specimen of Pleurogenes; further back in the 

 intestine, Brachysaccus was found fairly frequently, 205 speci- 

 mens altogether being obtained. The rectum yielded 19 speci- 

 mens of Diplodiscus, which occurred sometimes singly, sometimes 

 in twos or threes. From the bladder, 75 specimens of Gorgodera 

 were got. Nematodes are very common in this frog, and large 

 numbers were got from the lungs, intestine and rectum. Three 

 cestodes were found in the intestine, and a large number in the 

 muscles. 



Hyla lesnearii. — Of 13 specimens of this frog, only one con- 

 tained trematodes, and that a single specimen of Polystomum in 

 the bladder. These frogs were collected at the Lodden River, in 

 the same locality in which Hyla phyllochroa occurred. Nema- 

 todes were found in the rectum. 



Hyla freycineti. — In the 26 specimens available, trematodes 

 occurred twice, 7 specimens of Pleurogenes being found in the 

 intestine of one frog, and 15 specimens of Dolichosaccus in the 

 duodenum of auotlier. Two cestodes were found in the duodenum 

 of one specimen. 



