Type host: Triturus cristatus (Laurenti, 1768), Crested newt.

Other hosts: Mesotriton alpestris (Laurenti 1768), Alpine newt; Lissotriton helveticus (Razoumovsky 1789), Palmate newt; Lissotriton vulgaris (L. 1758), Common newt.

Type locality: EUROPE: France.

Geographic distribution: EUROPE: France.

Description of oocyst: Oocyst shape: cylindrical, symmetrical; number of walls: 2 (line drawing shows only 1); wall thickness: ~1; wall characteristics: outer smooth and contains 8-9 fine, radiating "canaliculi" that seem to terminate themselves in/on the internal layer of the oocyst wall (Lavier, 1936) and are arranged in an equatorial band ~12-13 wide; inner thinner than outer wall; L x W: 39.5 x 24 (36-42 x 20-27); L/W ratio: 1.6; M: absent; OR: present; OR characteristics: a large mass of lipid-like globules that mostly obscure sporocysts (line drawing); PG: absent. Distinctive features of oocyst: massive OR of oil-like globules and an equatorial band, 12-13 wide, of fine radiating "canaliculi" in the oocyst oute wall that seem to encircle the wall.

Description of sporocysts and sporozoite: Sporocyst shape: lanceolate; L x W: 25-30 x 6; L/W ratio: ~4.5; SB: may be present (line drawing); SSB: absent; PSB: absent; SR: present; SR characteristics: ovoidal mass of small granules, nearer the rounded end of sporocyst; SZ: elongate, slightly longer than sporocyst and pointed at one end, each with a small RB at rounded end (line drawing). Distinctive features of sporocysts:

Prevalence: Unknown.

Sporulation: Unknown.

Prepatent and patent periods: Unknown.

Site of infection: Intestinal mucosa.

Endogenous development: Unknown.

Materials deposited: None.

Remarks: Laveran and Mesnil (1902a) described an intestinal coccidium (E. prevoti) from P. esculenta for which they created the genus Paracoccidium because the sporocyst walls disappeared after sporulation releasing eight SZ into the oocyst, a phenomenon now known to be reasonably common among eimerians of reptiles and, apparently, some amphibians. Eimeria canaliculata and E. propria are morphologically similar and are found in the same hosts (see Lavier 1936). However, sporocysts of E. canaliculata are longer, the outer wall of the oocysts has an equatorial band of tubules, and the OR is a large mass of lipid-like globules. This combination of structural features makes the sporulated oocysts of E. canaliculata unique among all caudate eimerians.