ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



43 



Platyhelniinth.es. 



Parasitic Rhabdocoel. — M. Caulleey and F. Mesnil {Bull. Soc. 

 Zool. France, 1919, 43, 198-204, 3 figs.). In the intestine of Haplo- 

 syllia hamata the authors found a Rhabdocoel Turbellarian, a single 

 specimen, apparently a parasite. There are some analogous cases, but 



Anterior end of Haplosyllis hamata, showing at P the parasitic 

 Rhabdoccel lying in the alimentary canal. 



they are few. In its diffuse, strongly developed yolk-gland, and in the 

 granular sub-ectodermic cells, the parasite here described, visible to the 

 naked eye as a golden-yellow spot, recalls the genus Fecampia, but the 

 authors are cautious. J- A. T. 



Transmission of Fowl Tapeworms. — James E. Ackert {Proc. 

 Amer. Soc. Zool. in Anat. Record, 1919, 15, 341). The house-fly, 

 Musca domestica, may transmit to chickens a tapeworm which seems to 

 be Davainea ietragona, and another species, D. cesticillus. The flies were 

 trapped at local poultry-yards where the chickens were known to be 

 infected ; they were fed to seventeen isolated chickens whose other food 

 was carefully scrutinized ; four chickens have been examined, and two 

 were parasitized by the tapeworm. J. A. T. 



Fish Trematodes. — T. Southwell and B. Prashad (Records 

 Indian Museum, 1918, 15, 348-51, 1 pi.). A small collection of en- 

 cysted larval Trematodes is described, and an account is given of 

 Clmostomum^nscidium sp. n. from the mesentery of IVichogaster fasciatus 

 and Nandus nandus. The hermaphrodite nature of the worm, the two 

 suckers, the position of the acetabulum, the situation of the ovary between 

 the two testes (which are non-digitate), the genital pore being situated 



