21,1 Shaw: Merrillosphaera 113 
four daughters that are entirely visible the numbers of the 
reproductive cells shown are 6, 6, 7, and 8. It is not likely 
that the number present in any case was beyond the range of 
variation in the number of reproductivé bodies in the mother 
coenobia of the preparations, for in such a case it would have 
attracted Klein’s attention and been the subject of special remark. 
There is, then, no reason for regarding these daughters as other 
than asexual daughters, each containing well-developed gonidia, 
in number about the same as the eight of the mother within 
which the daughters were developed. 
In the largest, which is evidently the most mature coenobium 
(Klein, ’89B, pl. 3, fig. 8), from which I venture to suppose 
that some of the progeny had departed, there are present one 
male coenobium and two other coenobia which were called fe- 
male. The male coenobium is fully mature, about 103 » in > 
diameter, and contains about two hundred thirty cells *° includ- 
ing about sixty ripe spermatozoid bundles, each about 12.5 p 
wide. The so-called female coenobia measured 115 and 135 n» 
in diameter, have vegetative cells about 4.3 » in diameter 
and reproductive cells, called eggs by Klein, that are 22 to 25 » 
in diameter. The numbers of the latter shown in the figure are 
seven and nine. These numbers are probably the total numbers 
found present rather than the numbers of the reproductive cells 
seen in the nearer hemisphere of each daughter, for the reason 
stated in the preceding paragraph. There is nothing about 
them to mark them as female. 
In the four mother coenobia containing mixtures of repro- 
ductive cells and coenobia, there are altogether ten male coenobia 
and ten of the kind which Klein called female, but which I 
regard as possibly asexual. Of the six coenobia that contain 
progeny, five contain males and the other one contains but a 
single coenobium. Carter (’59) remarked, as I have already 
stated, that he found males and asexual coenobia in the same 
mother, females and asexual coenobia in the same mother, but 
never male and female in the same parent. A similar state of 
affairs in the coenobia of M. migulae would account for the 
absence of any female daughters in the coenobia figured, for 
there is but a single daughter in all of them that is not accom- 
panied by male coenobia. 
“Including the 15 per cent which I add to Klein’s estimates for the 
reason stated on page 111. 
187663——8 
