PROTOZOA. 



Genus CHLAMYDOPHRYS a Cienkowski, 1876. 

 Species CHLAMYDOPHRYS ENCHELYS b (Ehrenberg.) 



A very peculiar organism has been described under the name of 

 Leydenia gemmipara Schaudinn, 1896. This was found in fluid, 

 obtained by puncture, from two ascites patients in Berlin, Germany. 

 More recently Schaudinn has concluded that Leydenia gemmipara 

 represents an abnormal condition of a protozoon known as Chlamy- 

 dopJirys. The latter passes through the intestinal tract of various 

 animals (as man, mice, squirrels, rabbits, cattle), and thus is occa- 

 sionally found in fresh human stools. According to Schaudinn, if 

 pathological conditions in the colon cause an alkaline reaction of its 

 entire content, the usual shell formation in CMamydophrys fails to 

 take place, the organisms then multiply in an atypical manner by 

 division and budding, and the result is the structure described as 

 Leydenia gemmipara. 



Genus LAMBLIA<: R. Blanchard, 1888. 



Generic diagnosis. — Polymastigidse: Body bilaterally symmetrical, pyriform, ex- 

 cavate antero-ventrally to form a sucker; flagella directed posteriorly; 3 pairs inserted 

 on margin of the sucker, 1 pair at posterior end of body. Parasitic in intestine of 

 mammals. 



Type species. — Lamblia duodenalis s. 1. ("i. intestinalis'' of man). 



Flagellate protozoa belonging to this genus are reported as para- 

 sitic in the intestinal canal of various species of mammals. At 

 present the forms in question are usually looked upon as belonging 

 to the species L. duodenalis. Evidence is, however, accumulating 

 (p. 92) to the effect that there are at least three distinct species of 

 Lamblia ("L. intestinalis" of man, L. muris of mice, and L. cuniculi (or 

 duodenalis 1) of rabbits). Admitting that there may be three species, 

 the intertransmissibility of these forms from one host to another 

 remains to be investigated to some extent. It seems thus far defi- 

 nitely proved that the form which occurs in man is transmissible to 

 mice, rabbits, and guinea pigs, hence mice still remain a source of 

 danger in respect to the infection in man. To exactly what extent 

 this fact is of academic interest or of practical significance is at 

 present sui judice. 



"■ Sysonym..— Leydenia Schaudinn, 1896. 



6 Synonyms.— Di//%ia enchelys Ehrenberg; CMamydophrys stercorea Cienkowski; 

 Leydenia gemmipara Schaudinn, 1896; CM. enchelys (Ehrenberg) Braun. 



c SYViONYMS.—Dimorphm Grassi, 1879 (not Haller, 1878, arachnoid); Megastoma 

 Grassi, 1881 (not de Blainville, mollusk; not Swains., 1837, bird; not Costa, 1850, fish; 

 not Megerle, mollusk); "Dimorpha Grassi" of Senn, 1901 (not Dimorpha Jur., 1807, 

 hymenopteron; not Gray, 1840, mollusk; not Hodgs., 1841, bird); Megastrmm 

 Schneidemuehl, 1898, misprint. 



