20, 5 Shaw: Janetosphaera and Volvox 479 
For one of these which most nearly fits the description of 
V. perglobator (Powers, ’08), but is readily distinguishable 
from it by having the outer wall of the oospore echinate, I 
propose the name Volvox merrilli, dedicating the species to Prof. 
Elmer Drew Merrill, who has been intimately associated with the 
locality in which this species was first collected, Pasay, on the 
southern outskirts of Manila, near Manila Bay. 
The other new species has smaitler, more or less pear-shaped 
vegetative cells and smaller oospores. For this the name Volvox 
barberi will be used, the species having been first collected by 
Dr. Marshall A. Barber, at Pasig, a few kilometers east of Ma- 
nila. Collecting places which Doctor Barber reported at Pasig 
yielded three new genera of the Volvocaceae, four new species, 
and a total of at least six species in a great variety of life 
phases. 
Descriptions of the two older species of Volvox (one under its 
new name), drawn only partly from material in hand, will now be 
given. These will be followed by transcripts of the descriptions 
of the species described by others that are considered by me to 
be properly retained in the genus Volvoz, and then by descrip- 
tions of the new species. 
Genus JANETOSPHAERA novum 
(Volvocaceae, Volvoceae) 
Type species, Volvox aureus Ehrenberg, fide Meyer. 
Body a free-swimming hollow spheroidal coenobium of bici- 
liate cells that contain chloroplasts. The cells appear to be in 
the periphery of a gelatinous matrix surrounded by a hyaline 
envelope. Protoplasts globose or ovoid in form, inclosed in 
thick membranes and partially separated by middle lamellae 
that extend as fibrils to near the center of the coenobium. Pro- 
toplasts connected by protoplasmic strands about as slender as 
the cilia. Asexual reproduction by gonidia that are differen- 
tiated late in the development of the soma or coenobium. Sexual 
reproduction by antheridia that produce spermatozoids, each of 
which has two cilia borne on the anterior end, and by oogonia 
that produce each a single egg. aan 
The character of this species as summarized by Klein (90, 
pp. 84 to 86) will be restated in the following paragraphs, and 
are, for the most part, probably drawn from one and the same 
species; though, as will be pointed out farther on, some were 
probably taken from very different species. 
