64 



BULLETIN 120, UNITED STATES NATIONAL MUSEUM. 



Measurements: A of a rather small individual; B of a large 

 individual — 



Measurements. 



Length of body 



Width of body 



Diameter of nucleus 



Diameter of endospherule 



The cilia are long. 



This Protoopalina has something the form of P. intestinalis, but 

 is in general broader in proportion to its length. It is very much 

 smaller and has very much smaller nuclei. The nuclei in most 



Pig. 29. — Protoopadina adelaidbnsis, X 460 diameters: a, a daughter cell; b, an 



ORDINARY INDIVIDUAL. 



individuals are spherical and in a reticulate condition. A few of 

 the smaller individuals show early metaphase nuclei, proximally 

 pointed and their pointed ends united by a very delicate thread. 

 The species is distinct. 



PROTOOPALINA MONTANA, new species. 



Type. — United States National Museum Cat. No. 16443. 



Host. — Megalophrys montana Wagler, from Java. Five indi- 

 viduals were opened. One infection was found, in United States Na- 

 tional Museum specimen No. 38955, 63 mm. long, from Tiibodas, Java, 

 4,500 feet altitude, no date; T. Barbour, collector (?) . Megalophrys 

 montana has a huge rectum, very long, with the caecal region well up 

 under the right arm. In opening museum specimens care should be 

 taken not to injure the posterior cartilege of the sternum. 



