H. B. Fantiiam 
401 
from a schizont is relatively small. Gametocytes free, with anterior 
longitudinal myonemes. 
One species only known at present. 
Parasite Habitat Host Remarks 
Merogregarina amaroueii, Porter Gut Amaroucium sp.- From Port Jackson, New South Wales 
5. Family Aggregatidae, Labbe. 
Schizonts are sub-epithelial (coelomic), and their nuclear multiplica¬ 
tion does not begin till growth is complete. Merozoites arranged around 
masses of residual protoplasm. No association between gametocytes, 
but copulation between free anisogamous gametes. Schizogony in 
Decapod Crustacea, sporogony in Cephalopod Mollusca. 
One genus, containing several species. 
(1) Genus Aggregata, Frenzel (= Eucoccidium, Lithe). 
With the characters enumerated above. Many species differentiated 
by Moroff (1908), often on physiological grounds. These species, as 
given by Moroff, are tabulated below. 
Parasite 
Habitat 
Host 
Location 
Gametocytes 
No. of 
Sporozoites in 
Sporocyst 
Aggregata spinosa, 
Spiral caecum 
Octopus [sp ?] Cavaliere (Var.), 
? 250—300 p 
24 
Moroff 
A. legeri, Moroff 
9 9 9 9 
Octopus 
Mediterranean 
Cavaliere 
3 120—170 p 
? 200—250 p 
16 
A. labbei , Moroff 
9 9 9 9 
Octopus 
Cavaliere 
3 120—170 p 
Sporocyst ? 
A. schneideri, Moroff 
9 9 9 9 
Octopus 
Cavaliere 
Sporocyst ? 
A. siedleckii, Moroff 
9 9 9 9 
Octopus 
Cavaliere 
16 
A. jacquemeti, Moroff 
99 9 9 
Octopus 
Cavaliere 
$ 100—150 p 
16 
A. octopiana, Schneider 
Rectum 
Octopus 
3 80—110 p 
130—180 p 
16 
A. duboscqi, Moroff 
Spiral caecum 
vulgaris 
Octopus 
Luc-sur-mer 
80—100 p 
8 
A. reticulosa, Moroff 
9 9 9 9 
Octopus 
Cavaliere 
120—150 p 
Sporocyst ? 
A. ovata, Moroff 
9 9 9 9 
Octopus 
Cavaliere 
200—300 p 
Sporocyst ? 
A. stellata, Moroff 
9 9 9 1 
Octopus 
Cavaliere 
Sporocyst ? 
A. ebertlii, Labbe 
9 1 99 
Sepia 
Cette; Trieste 
90—120 p 
3 (Schizogony 
A. arcuata, Moroff 
99 9 9 
officinalis 
Sepia 
Cavaliere 
120—140 p 
in Portunus 
arcuatus and 
P. depurator) 
3 
A. mingazzini, Moroff 
Intestine 
Sepia 
Cette 
120—150 p 
4 
A. minima, Moroff 
? 
? 
Mediterranean 
50 p 
3 ? 
A. frenzeli, Moroff 
Spiral caecum 
Sepia 
Cette 
3. 
o 
o 
r—i 
1 
o 
00 
Sporocyst ? 
A. mammillana, Moroff 
? 
? 
Cavaliere 
100—150 p 
4 
