32 CALIFORNIA ACADEMY OF SCIENCES. 



Fig. 30. Another sporogonimii with shuttle spores. The restkorper is 

 scattered and divided. 



Fig. 31. A sporogoniiim with multinucleated shuttle spores. 



Fig. 32. Some of the spores more highly magnified. Zeiss 1-12, oc. 4. 



Fig. 33. Lunate spore from Spermatobium eclipidrili. 



Fig. 34. A shuttle spore from Spermatobium Freundi. The two smaller 

 figures, a and b, represent the cytospheres, respectively from figs. 

 33 and 34, showing their relative size. 



Fig. 35. A shuttle spore from Spermatobium Freundi, showing amcBboid 

 movement. 



Fig. 36. A sporogonium just bursting, with fully nucleated shuttle spores. 



Fig. 37. Two of the spores drawn on a larger scale. 



Fig, 38. A Spermatobium eclipidrili, in division, with three nuclei. Be- 

 tween a h c the division lines are seen. 



Fig. 39. A Spermatobium Freundi in division. The niaclei are already 

 formed, the remaining nucleoli in division. 



Fig. 40. A Spermatobiiim in division. Micronuclei are formed and nu- 

 cleoli dispersed. 



Fig. 41a, b, c. a divided Spermatobium with perfect nuclei, but not fully 

 developed cytospheres. In 41a the focus is set on the vacuoles. 

 " B. Similarly fociased on the surface cytospheres. 

 " c. Focused on the nuclei. 

 " D. A. nucleus more magnified. 



Fig. 42. A Spermatobium eclipidrili in division. In the smaller sporogo- 

 nia the sporoblasts are already formed, while in the one to the left 

 the cytospheres are yet diffused. The microniiclei in jjosition. 



Fig 43 A Spermatobium of unusual size and structure. 



Fig. 44. A Spermatobiiim of similar shape enclosed in a thick cyst. Pos- 

 sibly the two last are in a stage of development for producing 

 " resting cysts." 



Fig. 45. A sporogonium of Spermatobium Freundi in which part of the 

 sporogonium has developed ripe spores while the other part has 

 remained undeveloped, probably from want of nuclear matter. 



Fig. 46 to 59. Haemagregarina nasuta. In 50 we see the youngest form 

 observed, the body not yet having folded itself. In 62 and 63 

 the anterior edge is serrated or slightly lobed, while in 64, the 

 most highly developed form observed by me, the anterior projec- 

 tion is very prominent. The cyst surrounding the protozoa 

 consists probably of the remains of a cell wall of the host as the 

 nuclus (fig. 58) would indicate. This Hasmagregarina stains 

 best and principally with hsematoxylon, it fails to take distinctly 

 the orange stain. All figures drawn under Zeiss hom. im. 1-12, 

 Oc. 3 and 4. 



