44 



sporogony occur in both the cluoden-um and the caecum of the 

 host. The caeca of Grouse chicks dying from coccidiosis are full 

 of spores (oocysts), which are passed out with the csecal droppings, 

 forming a source of infection on the moors. On the ingestion of 

 the spores by other Grouse, the sporozoites are liberated by the 

 action of the pancreatic juice. Larvae of Scatofliaga, found in 

 Grouse-droppings, swallow the Coccidian Kspores, voiding them 

 uninjured, and so aiding in the dissemination of the spores in 

 nature. 



The coccidiosis of Grouse is transmissible directly to young 

 fowls and young pigeons by feeding these birds on ffeces of in- 

 fected Grouse. 



Dr. 0. W. Andrews, F.R.S., F.Z.S., exhibited and made 

 remarks upon a photograph phoAving some Robber-Crabs {Birgus 

 latro) climbing the trunk of the Christmas Island Sago-palm 

 (Arenga listeri). He also made some observations on the habits 

 and food of these Crustaceans. 



Dr. R. T. Leiper, F.Z.S., exhibited the orginal specimens of 

 the nematode worm Acanthocheilonema dracunculoides Cobb., 

 from the Museum of the Royal College of Surgeons. The 

 characters of the genus, of which this is the type, are found to 

 have been inaccurately interpreted, the posterior end of the 

 worm having been described as the head and the cuticular caudal 

 appendages regarded as "lips." The remarkable specific charac- 

 ters — viz., the entire absence of male forms and the lack in the 

 female of vaginal opening — had also to be repudiated, for both 

 are to be seen in the original material. The genus, as revised, 

 would admit a second species, the Filaria perstans of Man. 



Dr. F. D. Welch, F.Z.S., read two papers entitled : («) "On 

 change of Colour in a Specimen of Mellivora ratel living in the 

 Society's Gardens," and (b) "A comparative Examination of 

 three living Specimens of Felis tigris soyidaica, with Notes on an 

 old Javan male." 



Mr. G. A. BouLENGER, F.R.S., Y.P.Z.S., communicated a paper 

 by Dr. W. E. Agar, M.A., on " The Nesting-Habits of the Tree- 

 Frog, PhylloTnedusa sauvagii." This Frog makes a nest suspended 

 from bushes overhanging a pool, into which the tadpoles drop 

 when the}^ are hatched. The nest is constructed from a number 

 of leaves, the lower ends of which are drawn together and held 

 so by a deposit of empty gelatinous egg-capsules, forming together 

 a thick jelly. After oviposition the nest is closed with a similar 

 mass of empty capsules, so that in a well made nest not a single 

 egg is exposed to the light and air. 



