194 The Philippine Journal of Science 192s 



androgonidia measure about 18 /*, and the twenty-eight gonidia 

 measure 21 to 28 ft. In the right daughter (96) the andro- 

 gonidia are the obscure smaller member of a pair at the left, 

 and the smaller body at the right side of the middle of the coe- 

 nobium. The one at the left is 4-celled and measures 21 n, 

 the one at the right is 2-celled and measures 18 /*. The fifteen 

 oogonidia are 21 to 28 p wide. In the small daughter (9c) 

 the twenty-nine reproductive bodies measure from 18 to 21 ft. 

 No androgonidia are distinguishable. 



Specimen 10.— Plate 2, fig. 11. This is a free bisexual coe- 

 nobium that is immature. It contains twenty-nine oogonidia 

 of about 30 p in diameter and two androgonidia. Of the latter 

 the one at the left is on the farther side a little above the 

 middle. It is divided into an immature platelet of thirty-two 

 cells that measures 26 /* across. The one at the right is on the 

 near side and is obscured by being in front of the upper mem- 

 ber of the twin oogonidia at the extreme right of the coenobium. 

 It is about 19 p in diameter. In this coenobium there are 

 numerous cells that are larger than typical somatic cells dis- 

 tributed like androgonidia in a male coenobium. They measure 

 about 8 p, and the somatic cells 4 to 6 p. 



Specimen 11. — Plate 2, fig. 10. This is a nearly mature 

 sexual coenobium with twelve oospores that range from 39 to 

 43 p wide. They have smooth spore walls that appear to be 

 about 3 ji thick. Unfortunately, the specimen has become too 

 much crushed by a bubble to admit of determining whether 

 antheridial sites are present. 



Specimen 12.— Plate 3, fig. 15. This coenobium contains 

 about twenty-seven oospores that can be counted in the photo- 

 graph. Each of the four spores that are black in the picture 

 has another behind it. The preparation dried up before the 

 specimen was studied in detail. One of the spores is shown 

 more highly magnified in Plate 3, fig. 16. Its diameter is about 

 40 ft. This spore is the upper one on the left side of the coeno- 

 bium. In the photograph two somatic protoplasts below the 

 left side of the spore are in fairly sharp focus. The cells that 

 look like ghosts are below the focal plane and those that show 

 as dark shadows are above that plane. Although the spore 

 appears to be in sharp focus it was probably somewhat below 

 the focal plane. This is indicated by the fact that the somatic 

 cells most nearly in focus are on diametrically opposite sides 

 of the spore. To the right from the spore there is a vacancy 



