194 
II. M. lYOOnCOOK. 
of Frau 9 a’s figures relating to K.nobrei, the suggestion 
may pei’haps be put forward that the phase in question cor- 
responds to the second process of schizogony (with few 
merozoites) which occurs in H. stepanovi, and the type of 
individual immediately preceding or resulting from the same. 
Again, with regard to K. marceaui, a form occurring in 
the blood is practically indistinguishable, according to certain 
of Fran 9 a’s figui-es, from some individuals of the second type 
of K. lacertfB, which I have described ; thus my figs. 9 and 
12 agree closely with his figs. 9 and 10 respectively of K. 
marceaui. Frau 9 a also mentions and figures certain phases 
from the liver, which he considers represent conjugation. 
What these do e.vactly signify is uncertain, but the micro- 
and macrosporogony described as resulting from this process 
is quite comparable to Marceau’s account of the same process 
in what is admittedly K. lacertm. (It may be added that 
in both cases it is of course much more probable, considering 
the matter in the light of Reichenow’s work, that schizogonic 
multiplication is concerned.) Hence, on the whole, and at 
any rate until the life-cycle of K. lacertm has been 
thoroughly worked out, it is very much better, I think, not 
to adopt these new names, bicapsulata, nobrei and 
marceaui, which would only entail great confusion and 
difficulty, but to consider them as representing merely different 
phases of K. lacertae. 
To complete my summary of this question, I must mention 
that there has been the .same premature and probably 
useless multiplication of species in the case of Karyolysus- 
forms from another species of Lacerta, viz. L. ocellata. 
In the first place. Billet [2] gave a short account, already 
referred to, of a karyolysing Hmmogregarine occurring in 
this lizard in Algeria, to which he gave the specific name 
c u r vi rostr i s. As this parasite occurs in a different species 
of host, we may perhaps assume for the present that it is a 
form distinct from K. lacerfas, though I do not think this 
ca,n be regarded as at all certain. A few weeks later, Nicolle 
[24J also described a similar Ilmmogregarine, from a variety 
