496 PENTASTOMIDA . CHAP. 
The following is a list of the species with their primary and 
secondary or larval hosts :— 
i. Linguatula pusilla, Diesing, found in the intestine of the fresh-water 
fish Acara, a South American genus of the Cichlidae. This is 
possibly the immature form of L. subtriquetra. 
ii. L. recurvata, Diesing, found in the frontal sinuses and the trachea of 
Felis onca. 
ili. L. subtriquetra, Diesing, found in the throat of Caiman latirostris and 
C. sclerops, perhaps the mature form of L. pusilla. 
iv. L. taentoides, Lamarck, found in the frontal sinuses and nasal chambers 
of the dog and ounce, and in the nasal cavities of the wolf, fox, goat, 
horse, mule, sheep, and man, and in the trachea of the ounce. The 
immature form has been found in or on the liver of the cat, guinea- 
pig, and horse; in the lungs of the ox, cat, guinea-pig, porcupine, 
hare, and rabbit; in the liver and connective tissue of the small 
intestine of man; and in the mesenteric glands of the ox, camel, 
goat, sheep, antelope, fallow-deer, and mouse. 
v. Porocephalus annulatus, Baird, found in the lungs of the Egyptian 
cobra, Naja haje ; the immature form is thought to live encapsuled 
in a species of Porphyrio! and in the Numidian Crane. 
vi. P. aonycis, Macalister, from the lungs of an Indian otter taken in the 
Indus. 
vii. P. armillatus, Wyman, found in the adult state in the lungs of certain 
African pythons, and in the lion; in the larval form it occurs 
encysted in the abdomen of the Aard-wolf, the mandril, and man— 
usually in negroes. Its migrations in the body of its second host 
sometimes cause fatal results. 
bifurcatus, Diesing, found in the body-cavity of certain snakes, and 
in the lungs of boa-constrictors and the legless lizard, Amphisbaena 
alba. Possibly an immature form. 
ix. P. clavatus, Lohrmann, found in the lungs of the Monitor lizard. 
x. P.crocidura, Parona, found in the peritoneum of the “ musk-rat ” Oroez- 
dura in Burmah. Probably a larval form. 
xi. P. crotali, Humboldt, found in the lungs, body-cavity, kidneys, spleen, 
and mesentery of many snakes and lizards, and of the lion and leopard. 
The immature forms occur in the liver and abdominal cavity of 
species of opossum, armadillo, mouse, raccoon, bat, and marmoset. 
xii. P. geckonis, Dujardin, found in the lungs of a Siamese gecko. 
xiii. P. gracilis, Diesing, found free in the body-cavity or encapsuled on the 
viscera and mesenteries of South American fishes, snakes, and lizards. 
xiv. P. heterodontis, Leuckart, found encapsuled in the abdominal muscles 
and mesentery of a species of Heterodon. 
xv. P. indicus,? vy. Linst., found in the trachea and lungs of Gavialis 
gangeticus. 
xvi. P. lari, Mégnin, found in the air-sacs of the Burgomaster or Glaucous 
gull, Larus glaucus of the Polar seas. 
Y 
Ville. 
1 Lohrmann, Arch. Naturg. Jahrg. 55, i., 1889, p. 303. 
* Von Linstow, J. &. Asiat. Soc. Bengal, ii., 1906, p. 270. 
