ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 25'J 



Indian Nematodes.* — F. H. Stewart describes new species of Ox/jsoma, 

 HeteraJcis, Dacnitis, and Atractis, as well as some larval forms and 

 OnchoJaimus indieus von Linstow. 



Platyhelminth.es. 



Intermediate Host of Schistosomum japonicum.f — K. Mivairi and 

 M. Suzuki have found that the intermediate host of this remarkable 

 Trematode is a small fresh-water snail — one of the Hydrobiidrc. The 

 developing eggs were found in the dung of a bull-calf ; the miracidium 

 is hatched when water soaks in. When numerous miracidia are put into 

 a vessel with the fresh-water snails infection is accomplished within two 

 hours. The mode of infection is the same as in the case of the liver- 

 fluke. Sporocysts occur in special places, such as the floor of the 

 mouth-cavity, the vicinity of the cerebral and pedal ganglia, and the 

 gills. As many as fifty rediae may be seen in one sporocyst. The first 

 free rediaj were seen on the twelfth day. The redia has an extraordinary 

 power of elongation. Almost ripe cercariad with bifid tails were seen 

 after seven weeks. Their general structure is described. Some of them 

 seem to spend the winter in their hosts, but no young redire were seen 

 in the snail in the winter. When mice were placed in a large dish with 

 infected fresh-water snails they became infected. The infection was 

 more rapid when the snails were broken up. When some infected water 

 was kept for half an hour on the skin of the mouse a very severe 

 infection resulted. 



New Trematode. :{: — E. Andre describes Mesoccelium carlisp. n. from 

 the small intestine of a tortoise {Cinixys belliana) from Uganda. It is 

 oval in shape, 1 ' 3 to 1*9 mm. in length, with a delicate cuticle. The 

 two branches of the gut extend about halfway along the body. There 

 are two spherical testes. The ovary is also spherical. The coils of the 

 oviduct, which are not complicated, occupy most of the posterior half of 

 the body. Between the branches of the gut and the periphery of the 

 body lie the diffuse yolk-glands. 



Structure of New Polystomum.§— F. H. Stewart gives a description 

 of the structure of Polystomum Icachugse sp. n. from the urinary 

 bladder of a water-tortoise {KurJuu/a lineata Gray), and compares it in 

 detail with the six previously estabbshed species. 



Trematode Parasites of Australian Birds. || — William Mcoll reports 

 on fifteen Trematodes from North Queensland birds, bringing his list 

 up to twenty-three. He examined 114 birds belonging to fifty species, 

 and found seventy-seven infected with parasitic worms — about 100 

 different forms altogether. Echinostome and Holostome Trematodes 

 seem to be unusually fretment, but it cannot be said there is much that 



* Records Indian Museum, x. (1914) pp. 165-93 (6 pis.). 



t MT. Medicin. Fakultat Univ. Kyusha Fukuoka, i. (1914) pp. 187-97 (2 pis.). 



I Eev. Suisse Zool., xxiii. (1915) pp. 91-3 (1 fig.). 



§ Records Indian Museum, x. (1914) pp. 195-205 (4 pis. and 3 figs.). 



|| Parasitology, vii. (191.4) pp. 105-26 (2 pis.). 



