GNATHOSTOMA SPINIGERUM 



globular swelling with two large lips. Neck 3 mm. broad. In front of 

 neck eight rows of simple spines directed backwards. Anterior half of 

 body with cuticular laminae, posterior unarmed. Two pre-anal and 

 two post-anal papillae. Bursa wanting. 



Spicules 1*1 and 0*4 mm. respectively. 



Leiper considers Gnathostoma siamense to be identical with 

 Gnathostoma spinigerum. 



The single specimen described by Levinsen was found by Deuntzer in 

 Bangkok (Siam), and was obtained from a young Siamese woman who suffered from 

 a small tumour of the breast which had developed in the course of a few days. 

 After the disappearance of the tumour, nodules the size of beans were found in the 

 skin ; out of one of these the worm was obtained. The same observer saw this 

 affection in two other persons. 



A closely related species, Gnathostoma 

 spinigerum, Ow., lives in the stomach of 

 wild cat (Felis catus), puma (Felts con- 

 color}, tiger (Felis tigris], and domestic cat 

 (India); another species, Gnathostoma 

 hispidum, Fedsch., 1839, in the stomach 

 of pigs in Turkestan, Annam, Hungary, 

 Congo, and by Collin in the stomach of an 

 ox (Berlin). 



Gnathostoma sp. in pariah dogs, 

 Calcutta. Gnathostoma sp. in monkeys, 

 French Guiana. They produce large 

 fibrous thickenings in the stomach wall. 



Gnathostoma spinigerum, 



Owen, 1836. 



Cuticle of bulb with eight rows 

 of chitinous laminae with their 

 posterior edges notched into spines. 

 The laminae on the anterior portion 

 of the body are similar trident 

 laminae. In the middle .' of the 



body, the laminae are"; simple, and conical, cuticle posteriorly is un- 

 Mouth with two fleshy lips. 



FIG. 275. Gnathostoma siamense : to the 

 left, the entire worm (8/1) ; to the right the 

 head seen from above, with two fleshy lips 

 (about 40/1). (After Levinsen.) 



armed. 



Male 5 mm. long byo'5 mm. broad; tail spiral,four pairs of papillae. 

 Female about twice as long ; tail straight, trilobed. 



Family. Dracunculidae, Leiper, 1912. 

 Genus. Dracunculus, Kniphoff, 1759. 



Anterior end rounded with a cuticular thickening or shield 

 Mouth triangular with two lips. Alimentary canal atrophied. 

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