44 
Just at present the question of their systematic position is in a some- 
what confused state. 
In the classification of Laveran® the Hsemos'poridia are divided 
into three genera: 
1. Hsemamceha (including the malarial type of organism). 
2. Piroplasma. 
3. Hxmogregarina. 
Neveu-Lemaire^ believes that these primary subdivisions should be 
into families instead of genera. He divides the Hsemosporidia into 
four families instead of three, viz: 
II X mogregarinidx 
Hxmamxbidx 
Halterididx 
Achromaticidx 
{ Lanhesterella. 
Karyolysus. 
nxmogregarina . 
( Plasmodium. 
Laverania. 
Hxmamxha. 
Halteridium. 
PolychromopMlus. 
j AcJu'omaticus. 
\Dactylosoma. 
It has been suggested that Piroplasma, an important group which 
has been left out, be included as an additional family. 
Liihe agrees with Neveu-Lemaire that the genus Ildemogregarina 
(Laveran) should be given the strength of a family. 
The classification of Minchm^^ attempts to accomplish the same end 
in a somewhat different manner. It is a modification of one pro- 
posed by Labbe. 
[LanlcestereUa. 
Hxmosporidia 
Hxmosporea 
Acystosporea. 
Karyolysus. 
Hxmogregarina . 
Plasmodium. 
Laverania. 
Hxmoproteus. 
Ilalteridium . 
Piroplasma. 
The description of the suborder Hxmosporea is as follows: 
Trophozoite, typically a vermiform hsemogregarine, endoglobiilar in early stages, 
free when full grown; apparently no alteration of hosts; schizogony and sporogony in 
the same host, which is always a cold-blooded vertebrate, fish, amphibian, or reptile. 
The hsemogregarines of mammals could not be included in this 
suborder without considerable modification. The classification devised 
® Laveran, A.: Les hematozoaires endoglobulaires. C. R. soc. biol.. Par., vol. 50, 
1899, p. 124-133. 
: Essai de classification des hematozoaires endoglobulaires. C. R. soc. biol., 
Par., vol. 53, 1901, p. 798. 
& Neveu-Lemaire; Les hematozoaires du paludisme. These, Paris, 1901. 
cMinchfn: The sporozoa. In ‘‘A treatise on zoology,” ed. by E. Ray Lankester, 
part 1, London, 1903. 
