496 PENTASTOMIDA 



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. suhtriquctra. 



ii. L. recurvata, Diesing, found in the frontal sinuses and the trachea of 

 Felis onca. 



iii. L. subtriqaetra, Diesing, found in the throat of Caiman latirostris and 

 G. sclerops, perhaps the mature form of L. pusilla. 



iv. L. taenioicles, 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-jjig, porcupine, 

 hare, and rabbit ; in the liver and connective tissue of tlie small 

 intestine of man ; and in the mesenteric glands of the ox, camel, 

 goat, sheep, antelope, fallow-deer, and mouse. 

 V. Porocephalas annulatus, Baird, found in the lungs of the Egyjitian 

 cobra, Naja haje ; the immature form is thought to live encapsuled 

 in a species of Porphyrio ^ and in the Numidian Crane. 



vi. P. aonycis, IMacalister, from the lungs of an Indian otter taken in the 

 Indus. 



vii. P. armillatHs, 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, 

 viii. P. hifurcatus, 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 " Oroci- 

 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,^ v. Linst., found in the trachea and lungs of Gavialis 



gangeticus. 

 xvi. P. lari, Megnin, found in the air-sacs of the Burgomaster or Glaucous 

 gull, Larus glaucus of the Polar seas. 



^ Lohrmann, Arch, Naturcj. Jahrg. 55, i., 1889, p. 303. 

 ^ Von Linstow, J. R. Asiat. Soc. Bengal, ii., 1906, p. 270. 



