30 



Dr. 11. li. Faxtiiam, F.Z.S., exliihited, on behalf of Mi.ss A. 

 PoRTEU, B.^c, anil himself, preparations an<l original drawings 

 of a new Tri/panoplai^ina {Cri/ptobia) from the alimentary tract 

 of Dendroccelwm lacteum. The pai-asites measure from 20/1 to 

 40 /A long approximately. They are bidagellate, the posterior 

 Hagellum forming the liorder of an undulating membrane. The 

 blepharoplast (kinetonucleus) is large and curved. It is proposed 

 to call the parasite Trypanoplasma (Cri/ptobia) dendrocceli. There 

 is evidence of hereditary infection of the Planarian by the Tryjjano- 

 plasma, for the parasites have been seen to enter the eggs of the 

 host. A Trypanosome-like liagellate was also seen on rare occa- 

 sions in the guts of DendroccHnm lacteum and Planaria nigra. 

 It is interesting to record, for the first time so far as is known, 

 the occurrence of a Trypanoplasma in a vegetal)]e feeder like 

 iJeadvoccdvni. 



])r. H. B. Faxtham, F.Z..S., Protozoologist to the Grouse- 

 Disease Inquiry, read four papers i-elating to the Protozoa and 

 blood of Grouse, illustrated by lantern-slides made from the 

 original plates accompanying the memoirs. 



The first paper, entitled " The Morphology and Life-History of 

 Einieria (Coccidium) avium: a Sporozobn causing a fatal disease 

 among young Grouse," gave a detailed account of the morj^hology 

 and life-history of the Coccidium wliich destroj^s the epithelial 

 lining of the duodenum and ca3ca of Grouse chicks, causing 

 enteritis accompanied by diarrhnu. 



The second paper, entitled " Observations on the Parasitic 

 Protozoa of the Red Grouse [Lagopus scotici(s)" set forth the 

 author's observations on some seven other Protozoa, parasitic 

 in the blood or in the digestive tract of Grouse. None of these 

 parasites, however, could be said to be either numei-ous or very 

 harmful to the birds examined. The parasites were Leucocytozoun 

 lovati, in which schizogony in the spleen of the bird was recorded 

 for the fii'st time, not only for Leucncytozo'Oii lovati but for any 

 avian Leucocytozoon ; Hcemoproteus mansoni and Spirochceta 

 lagopodis in the blood ; Trichomonas eberthi and Spirochata lovati 

 in the C£Bca ; and Ammba larjopodis in the intestine and fa?ces. 

 The Spirocluetes and Amoeba of Grouse are new species. J^fono- 

 cystls spores are also found occasionally. All the parasitic 

 Protozoa mentioned were observed both alive and in stained 

 preparations. 



The third paper dealt with " Experimental Studies on Avian 

 Coccidiosis, especially in relation to young Grouse, Fowls, and 

 Pigeons." The results of many and varied experiments were 

 recorded in this paper, relating to the time of ripening and 

 duration of infectivity of coccidian oocysts, their ilispersal by 

 insect larva? itc, and the elli-cts of various reagents on tlie oocysts. 

 The distrilnition of the parasites within the host was given and 

 the results of the transmission of Grouse coci'idiosis to young 

 fowls and pigeons were set forth. 



