NELLOCYSTIS. 75 



one of the primary rami and returning into the trmik. The 

 second kind, described as rotation movements, result in a 

 spiral twisting of the primary rami and their branches on their 

 own axes. 



Monocystis-hke sporocysts, in masses visible to the naked 

 eye, are present in the anterior segment of the host or can be 

 found by scraping the body-wall. Ovoid gametocysts were 

 found in a few hosts. 



Habitat. — Coelomic cavities of Eutyphceus foveatus (Rosa) 

 (most commonly) and E. spinulosus Gates, E. rams Gates, 

 and E. peguanus Gates (more rarely) : Burma. 



Genus NELLOCYSTIS Gates, 1933. 

 Nellocystis, Gates, 1933, pp. 508-11. 



Trophozoites soUtary or in aggregates of two or three mdi- 

 viduals. Anterior end stalk-like and branching into several 

 short filaments which attach the parasite to the host. Sporo- 

 cysts as in Monocystis. 



19. Nellocystis birmanica Gates. (Fig. 21.) 



Nellocystis birmanica. Gates, 1933, pp. 508-11, figs. 1-8. 



Trophozoites club-shaped, the posterior end enlarged, the 

 anterior end narrowing to an elongate stalk. The anterior 

 end of the stalk branches into several short filaments, which 

 attach the parasite to the host. Within the posterior portion 

 is a vacuolar cavity containing a fluid m which there is a smgle 

 dark, regularly spheroidal, granular mass contaming a siiagle 

 ovoidal nucleus with a single karyosome. Within the stalk, 

 near the vacuolar cavity, is a second nucleus, which contains, 

 in addition to a large karyosome, a smaller, slightly bent, 

 rod-like body. This stalk -nucleus is placed "with its long axis 

 along the long axis of the stalk. In some specimens the stalk- 

 nucleus is transverse to the long axis of the stalk, and the 

 single large karyosome is replaced by a number of smaller 

 granules, scattered throughout the nucleus. Sometimes the 

 single vacuolar cavity contains two discrete, ovoidal masses 

 of unequal size, each containing a nucleus with a single karyo- 

 some, and the stalk-nucleus is granular and flattened on the 

 side of the vacuolar cavity. Aggregates of two or three uidi- 

 viduals, with as many stalks for attachment, are also found, 

 and each shows the structure as seen in a sohtary individual. 

 Sporocysts are pseudonavi cellar (homopolar), and were seen 

 to contain a single nucleus, eccentricaUy located within the 

 finely granular contents. 



Remarks. — The Gregarines when present are said to 00010" in 

 large number, 50 to 90 per segment for a number of segments. 



